JP6042624B2 - Manufacturing method and manufacturing apparatus of joined body - Google Patents

Description

  The present invention relates to a method and an apparatus for manufacturing a bonded strip of strips, in which a strip and a strip are continuously butted in the width direction and friction stir welded to manufacture a long bonded strip.

When joining materials to be joined such as an aluminum alloy plate, a rod-shaped stirring tool (a shoulder portion having a large diameter and its tip) is rotated at one end of a joining line formed by abutting the joining surfaces of the materials to be joined together. The probe is made of hard tool steel with a probe on it and is inserted with a strong force. The tool is moved to the other end along the joining line while rotating at high speed, and the joining surface is moved by the frictional heat generated at that time. The joining method of joining the joining surfaces of the materials to be joined while plasticizing and applying pressure by the shoulder portion of the tool is friction stir welding (FSW:
It is called “Friction Styl Welding” and is widely known (for example, Patent Document 1).

  As materials to be joined by friction stir welding, the joining was mainly between the same kind of materials, but for example, joining between dissimilar materials, such as joining between an aluminum material and a dissimilar metal material, is also disclosed. (For example, Patent Document 2).

In recent years, hybrid cars, electric cars, and fuel cell cars have been developed and put into practical use.
A low-resistance metal fixed resistor, which is one of electronic passive components used in such automobiles, is an important component having a function of detecting a current flowing through a circuit.

  The in-vehicle low resistance metal fixed resistor is manufactured by bonding between different resistance bonding materials of a low resistance metal material such as a Cu-Mn-Ni alloy or Ni-Cr alloy plate and a Cu plate as an electrode material.

  As a mass production method for such an electrical resistor, it has been proposed to continuously weld a strip-shaped electrode material on both sides of a strip-shaped low-resistance metal material and then cut it laterally (Patent Document 3). ). Since the welding apparatus is expensive, if a belt-like plate, that is, a belt plate, can be friction stir welded in the width direction, it can be suitably used for such applications.

By the way, it is difficult to ensure that there is no high joining quality and deformation distortion in the case of butt joining by friction stirring. In order to ensure butt-joining quality, a method has been disclosed in which rotatable guide rollers are arranged on both sides in the moving direction of the joining member, and butt-joining is performed while pressing the joining member in the butting direction by the both guide rollers. (Patent Document 4). Even if there is a gap in the butted part, the softened part in the butted part is easily closely deformed and the air present in the gap escapes to the outside of the joined part, preventing the air from entering the joined part. .
However, this method can be applied when the work piece to be butt-joined is a mold having a strong side wall, and the side wall is pressed in the butt direction by a rotatable guide roller. It is. For this reason, when the workpiece is in the shape of a thin plate, the side edge of the workpiece is deformed by receiving pressure from the roller.
Furthermore, since the workpiece is a thick mold, it can be stir welded simply by contacting the roller that supports the tool linearly. It also deforms in the direction.
For this reason, it is difficult to apply the method described in Patent Document 4.

In Patent Document 5, in order to correct deformation or twisting or warping of the periphery of the joint when the workpieces are friction stir welded, the joint joined by the probe is pressurized to remove distortion. It has been proposed to provide a straightening roller. However, in this case, the work material to be butt-joined is a mold material having a strong side wall, and the side wall is pressed in the butt direction by a rotatable guide roller. Only the distortion around the butt is corrected. As described above, this method is based on the premise that pressure is applied in the abutting direction with a rotatable guide roller in order to improve the joining quality. For this reason, when the workpiece is a thin plate, the side edge portion of the workpiece is deformed by receiving pressure from the guide roller.
Furthermore, because the work material butting part is a thick mold material, stir welding can be performed simply by contacting the roller that supports the tool linearly, but when the work material is a thin plate, it receives a large load from the tool. It also deforms in the thickness direction. Therefore, it is difficult to apply the method described in Patent Document 5 to a thin plate.

In Patent Document 6, a probe of a friction stir welding tool is embedded in a joint planned portion of a joint work in order to prevent a deformation of a side edge portion of the joint work due to restraint and obtain a joint joint having excellent dimensional accuracy. And, in a state where the joined work is restrained in a lateral movement blocking state by at least a pair of restraining rollers arranged on both sides of the joined work, the joined work is moved so that the planned joining portion sequentially passes the probe, In the method of manufacturing a joint joint for friction stir welding of a portion to be joined, a protector for preventing deformation of the side edge portion due to restraint is attached to at least one side edge portion of both side edge portions of the joint workpiece, The manufacturing method of the joint joint characterized by restraining is disclosed.
However, the use of the protector in order to prevent the side edges from being bent during joining has a problem in that the mechanism becomes complicated and it is difficult to wind the joined product into a coil. Moreover, since the cost of a protector is also required, it is not preferable in terms of production cost. In addition, it is difficult to produce a joined body having three or more strips by joining other strips in the width direction to the two strips joined the strip and the strip. There is also.
Furthermore, since the workpiece is only in linear contact with the roller serving as the backing of the tool, when the workpiece is a thin plate, the workpiece is deformed in the thickness direction because it receives a large load from the tool. For this reason, it is difficult to apply the method described in Patent Document 6 when the workpiece is a thin plate.

  Thus, in the butt friction stir welding of thin strips in the width direction, the production quality is high, the deformation of the strips hardly occurs at the time of joining, and there is no need to use an auxiliary member such as a protector. There has been a demand for a manufacturing method and a manufacturing apparatus for continuously joining a manufacturing apparatus, particularly a joining strip obtained by joining different types of long strips in the width direction.

JP 7-505090 Gazette Japanese Patent Laid-Open No. 10-137952 Japanese Patent Laid-Open No. 6-224014 Japanese Patent Laid-Open No. 11-10366 JP-A-11-28582 JP 2004-223544 A

  The present invention has been made in view of the above problems, and the object of the present invention is that joining is not difficult even if the workpieces are thin plates, the joining quality is high, and deformation does not easily occur during joining. It is not necessary to use a protector, and is to provide a manufacturing method and a manufacturing apparatus for a joined body in which a joined plate is produced by butt friction stir welding in the width direction, and a dissimilar material that is a particularly thin and long plate material. It is to provide a manufacturing method and a manufacturing apparatus for a joined body of strips, in which strips are continuously butted in the width direction and friction stir welded to produce a long joining strip.

The invention according to claim 1 is a method of manufacturing a band plate assembly by abutting the band plate 1 and the band plate 2 in the width direction and embedding a probe of a tool for friction stir welding.
Applying a backing having a convex curved surface to the back side of the strip 1 and the strip 2 in which the probe is embedded,
The side surface of the band plate 1 and the side surface of the band plate 2 are brought into contact with each other and tension is applied to the band plate in the longitudinal direction so that the probe is embedded along the convex curved surface of the backing. ,
In a state in which the butted band plate 1 and the band plate 2 are constrained in the width direction so that the band plate 1 and the band plate 2 with which the side surfaces are butted do not expand in the width direction due to the insertion of the probe,
A friction stir welding tool probe is embedded in or near the abutting portion, and the band plate 1 and the band plate 2 are moved relative to the probe in the longitudinal direction of the band plate to perform friction stir welding. It is a manufacturing method of the joined body of a strip.
According to the invention described in claim 1, it is difficult to join the strip and the strip with a thin plate thickness easily, the joining quality is high, there is no need to use a protector, and the strip is deformed during joining. It is difficult to produce a bonded strip by butt friction stir welding in the width direction. Moreover, even if it is long strips or even strips of different materials, it can be manufactured by butt friction stir welding.

The invention according to claim 2 is a method for producing a bonded body of band plates by abutting the band plate 1 and the band plate 2 in the width direction and embedding a probe of a tool for friction stir welding.
Applying a rotating drum to the back side of the strip 1 and the strip 2 in which the probe is embedded,
Before and after the probe is embedded by abutting the side face of the strip 1 and the side face of the strip 2
Along the curved surface of the rotating drum,
In a state in which the butted band plate 1 and the band plate 2 are constrained in the width direction so that the band plate 1 and the band plate 2 with which the side surfaces are butted do not expand in the width direction due to the insertion of the probe,
A friction stir welding tool probe is embedded in or near the abutting portion, and the band plate 1 and the band plate 2 are moved relative to the probe in the longitudinal direction of the band plate to perform friction stir welding. It is a manufacturing method of the joined body of a strip.
According to the invention described in claim 2, since the apparatus is simple and inexpensive, it is possible to perform friction stir welding between the strip and the strip with a thin plate thickness without deformation of the side edge without using a protector, A bonded strip without deformation can be manufactured at low cost.
In the invention according to claim 3, the abutted band plate 1 and the band plate 2 are arranged so as not to expand in the width direction. 2. The friction stir welding is performed by restraining in the width direction by a width direction restraint attached to the backing.
Or it is a manufacturing method of the joined body of a strip according to 2.
According to the invention described in claim 3, since the apparatus is simple and inexpensive, it is possible to perform friction stir welding between the strip and the strip with a thin plate thickness without deformation of the side edge without using a protector, Since the relative speed with respect to the width direction restraint tool can be reduced, a stable quality-free deformation band plate can be manufactured at low cost with a simple device.

The invention according to claim 4 is to manufacture a three-strip strip joined body by butting the strip-joint 3 and the strip 4 in the width direction and embedding a probe of a friction stir welding tool. A method,
Applying a backing having a convex curved surface to the back side of the band plate assembly 3 and the band plate 4 in which the probe is embedded,
Along the convex curved surface of the backing, before and after the probe is embedded by abutting the side surface of the bonded body 3 of the belt plate and the side surface of the belt plate 4,
A state in which the bonded strip 3 and the strip 4 are constrained in the width direction so that the strip 3 and the strip 4 with which the side surfaces are butted do not expand in the width direction due to the insertion of the probe. so,
A probe of a tool for friction stir welding is embedded in or in the vicinity of the butted portion between the butted band plate assembly 3 and the band plate 4, and the band plate union 3 and the band plate relative to the probe. This is a manufacturing method of a three-strip strip bonded body in which the strip 4 is moved in the longitudinal direction of the strip and friction stir welding is performed.
According to the invention described in claim 4, the strip plate and the strip plate having a small thickness can be friction stir welded without deformation of the side edge portion without using a protector. Since it is possible to join sequentially, it is possible to manufacture a joining strip of three or more strips.

In the invention according to claim 5, three or more strips are butted in the width direction of each strip, and a probe of a tool for friction stir welding is embedded to form a joined body of three or more strips. A method of manufacturing all at once,
Applying a backing having a convex curved surface on the back side of all the strips in which the probe is embedded,
Along the convex curved surface of the backing, before and after the probe is embedded by abutting the side and side surfaces of the strips,
In a state where the abutted band plates are constrained in the width direction so that the entire width of the abutted band plates does not expand in the width direction due to the insertion of the probe,
A probe for a friction stir welding tool is embedded in or near each butting portion between the band plate and the band plate, and the band plate is moved in the longitudinal direction of the band plate relative to the probe to thereby friction stir. It is a manufacturing method of the joined body of a 3 or more strip | belt board to join.
According to the invention described in claim 5, without using a protector, without deformation of the side edge portion, the plate thickness is thin, and the strip plate and the strip plate can be friction stir welded. Can be manufactured on a short production line.

The invention according to claim 6 is characterized in that an angle formed between the rotating shaft of the friction stir tool and the tangent plane of the strip in which the probe is embedded in the strip forms an obtuse angle. It is a manufacturing method of the joined body of a strip.
According to the sixth aspect of the present invention, it is possible to perform the friction stir welding between the thin strip and the strip without using the protector without deformation of the side edge portion, and it is possible to manufacture the joint strip having a stable joining quality.

The invention according to claim 7 is a joining apparatus that abuts the strips and performs friction stir welding,
An uncoiler 1 for unwinding the wound strip 1 and an uncoiler 2 for unwinding the wound strip 2;
A friction stirrer that abuts the side surfaces of both of the fed strips, embeds a probe of a friction stir tool in the abutting part or in the vicinity thereof, and stirs and joins by rotation,
A backing having a convex curved surface for supporting pressing against the strip by the tool from the back side of the strip;
In the longitudinal direction of the band plate, the side surface of the band plate 1 and the side surface of the band plate 2 are faced to follow the convex curved surface of the backing before and after the probe is embedded. A tension applying device for applying tension;
A width direction restraint tool for restraining the abutted band plate 1 and the band thin plate 2 in the width direction so that the band plate 1 and the band plate 2 abutted against each other do not expand in the width direction due to the insertion of the probe. When,
A moving device for moving the band plate relatively abutted against the friction stir tool in the longitudinal direction of the band plate;
It is a friction stir welding apparatus of the strip which has.
According to the seventh aspect of the present invention, it is not difficult to join the strip and the strip having a thin plate thickness, the joining quality is high, the use of a protector is not required, and deformation of the strip occurs during joining. It is difficult to provide a friction stir welding apparatus that can manufacture a joining strip by butt friction stir welding in the width direction. Further, there is provided a friction stir welding apparatus capable of manufacturing a joined body by butt friction stir welding, even if they are long strips or different strips of different materials.

The invention according to claim 8 is the friction stir welding apparatus for a strip according to claim 7, wherein the backing having a convex curved surface is a rotary drum.
According to the invention described in claim 8, since the backing device is simple and inexpensive, it is possible to friction stir weld the strip and the strip with a thin plate thickness without deformation of the side edge without using a protector. There is provided a friction stir welding apparatus capable of inexpensively producing a bonded strip of stable quality and without deformation.
According to the ninth aspect of the present invention, there is provided a width direction restraining device on the backing so that the band plate 1 and the band plate 2 whose side surfaces are butted against each other are not expanded in the width direction. Is a friction stir welding apparatus for a strip according to claim 7 or 8.
According to the ninth aspect of the present invention, since the relative speed with the width direction restraint tool can be suppressed, it is easy and inexpensive to restrain the expansion in the width direction. Therefore, the side edge can be used without using a protector. There is provided a friction stir welding apparatus that can frictionally stir and join a thin strip and a strip without deformation of the parts, and that can produce a stable and stable deformation strip without using a simple device.

According to a tenth aspect of the present invention, in the direction perpendicular to the rotation axis of the rotating drum, the width direction restraining tool is sandwiched between one rib erected in a direction perpendicular to the rotation axis of the rotating drum and the abutted band plate. The other ribs erected on the plate and the band plate that is abutted against each other are formed by a restraining tool that restrains the distance between the ribs so that the ribs do not expand in the width direction due to the insertion of the probe. It is a friction stir welding apparatus of the described strip.
According to the tenth aspect of the present invention, since the expansion in the width direction can be restrained by the rib standing on the rotating drum, there is no deformation of the side edge portion, and the bonding is simple, inexpensive and stable without deformation. A friction stir welding apparatus capable of manufacturing a strip at a low cost is provided.

The invention according to claim 11 includes a plane formed by a side surface of the band plate 1 wound around the uncoiler 1 and a side surface of the side surface of the band plate 2 wound up by the uncoiler 2. The strip according to any one of claims 7 to 10, wherein a plane formed by the plane forms the same plane, and a rotation axis of the uncoiler 1 and a rotation axis of the uncoiler 2 intersect with the same plane perpendicularly. This is a friction stir welding apparatus.
According to the eleventh aspect of the present invention, there is further provided a friction stir welding apparatus capable of producing a joining band plate free from distortion and twisting.

The invention according to claim 12 includes a recoiler or a pinch roller that winds up the band plate that is butt-joined to the downstream side of the band plate from the backing, and the recoiler or the pinch roller has a tension applied to the band plate. The belt stirrer friction stir welding apparatus according to any one of claims 7 to 11, further comprising a mechanism for moving the strip in the downstream direction while applying.
According to the twelfth aspect of the present invention, there is further provided a friction stir welding apparatus capable of reliably moving the strip in the length direction of the strip with respect to the friction stir tool.

According to a thirteenth aspect of the present invention, the uncoiler band is more stretched between the uncoiler strip portion and the portion where the strip plate contacts the backing than the embedded portion of the tool. It has a tension adjustment roller for following the backing at a portion close to the feeding side of the plate, the tension adjustment roller applies a pressing force to the strips 1 and 2 in a direction approaching the backing, The friction stir welding apparatus for a strip according to any one of claims 8 to 12, wherein the strips 1 and 2 are placed along the rotating drum.
According to invention of Claim 13, the friction stir welding apparatus which can make the said strip | board follow along the said rotating drum more reliably is provided.

According to a fourteenth aspect of the present invention, the friction stir welding apparatus includes a friction stir tool, a drive mechanism for rotating the friction stir tool, a drive mechanism for moving the friction stir tool in the direction of the rotation axis, and a rotation for embedding the friction stir tool. A load mechanism for applying a load in the axial direction, and a rotation shaft position change drive mechanism for the friction stir tool so that the position of the rotation shaft of the friction stir tool can be changed in the longitudinal direction and / or the width direction of the strip. The strip stirrer welding apparatus according to any one of claims 7 to 13.
According to the invention described in claim 14, since the position of the rotating shaft of the friction stir tool of the friction stirrer can be changed with respect to the belt plate and the backing, the friction stir welding can obtain a stable joint quality. An apparatus is provided.

The invention according to claim 15 is characterized in that the rotating drum has a position adjusting mechanism so that the position of the rotating shaft can be changed in the longitudinal direction of the strip. It is a friction stir welding apparatus of the described strip.
According to the fifteenth aspect of the present invention, there is further provided a friction stir welding apparatus that can adjust the joining conditions and obtain stable joining quality because the position of the rotating shaft of the backing rotary drum can be changed. The
The invention according to claim 16 is the belt stirrer welding apparatus according to any one of claims 8 to 15, wherein the tool rotation shaft is closer to an uncoiler than the rotation shaft of the rotating drum. .
According to the sixteenth aspect of the present invention, there is further provided a friction stir welding apparatus that can obtain more stable joining quality.
The invention described in claim 17 is the friction stir welded portion and / or the backing provided with a temperature adjusting mechanism for maintaining a constant temperature during the friction stir welding. It is a friction stir welding apparatus for strips.
According to the seventeenth aspect of the present invention, there is provided a friction stir welding apparatus capable of obtaining stable joining quality even with respect to seasonal fluctuations and long-time operation.

The invention according to claim 18 is a punching mechanism for punching a bonded strip on the downstream side of the recoiler or the pinch roller, a cutting mechanism for cutting, a cutting mechanism for cutting, a polishing mechanism for polishing, a rolling mechanism for rolling, or a press. 13. The friction stir welding apparatus for a strip according to claim 12, wherein a pressing mechanism is attached.
According to the invention described in claim 18, since there is provided a punching mechanism, a cutting machine term, a cutting mechanism, a polishing mechanism, a rolling mechanism, or a press mechanism, there is provided a friction stir welding apparatus capable of performing the various processes in the line. Is done.
The invention as set forth in claim 19 is the continuous friction stir welding apparatus for a strip according to any one of claims 7 to 18, wherein the friction stir tool is made of a Ni-based compound alloy.
According to the nineteenth aspect of the present invention, since the friction stir tool is made of a Ni-based compound alloy, the long stir welding can be continuously performed with a low frequency of friction stir tool replacement. An apparatus is provided.

  According to the invention described in claim 1, it is difficult to join the strip and the strip with a thin plate thickness easily, the joining quality is high, there is no need to use a protector, and the strip is deformed during joining. It is difficult to produce a bonded strip by butt friction stir welding in the width direction. Moreover, even if it is long strips or even strips of different materials, it can be manufactured by butt friction stir welding.

  According to the seventh aspect of the present invention, it is not difficult to join the strip and the strip having a thin plate thickness, the joining quality is high, the use of a protector is not required, and deformation of the strip occurs during joining. It is difficult to provide a friction stir welding apparatus that can manufacture a joining strip by butt friction stir welding in the width direction. Further, there is provided a friction stir welding apparatus capable of manufacturing a joined body by butt friction stir welding, even if they are long strips or different strips of different materials.

The typical front view of the continuous friction stir welding apparatus 200. FIG. The typical top view of the continuous friction stir welding apparatus 200. FIG. It is a perspective view which shows typically a mode that the elongate joined body 3 is manufactured by joining the elongate strip 1 and the elongate strip 2 using this continuous friction stir welding apparatus 200. FIG. However, in FIG. 3, both the plane formed by the side face of the band plate 1 wound around the uncoiler 4 and the plane formed by the side face of the band plate 2 wound up by the uncoiler 5 are both formed. Since the same plane F is formed, for the sake of convenience, what is behind the plane F (behind the plane when viewed in perspective) is indicated by a broken line. FIG. 4A is a plan view schematically showing a main part of an example of the rotating drum 71. FIG. 4A shows a state where there is no band plate for joining, and FIG. 4B shows a state during joining work. It is a figure which shows the angle which the rotating shaft of a friction stir tool makes with the tangent plane of the strip along the backing. It is a figure for demonstrating a mode that the probe 612 of the friction stir tool main body 611 of a friction stir tool is embedded in the butt | matching surface P, and expanded the end elevation of the VV sectional view of FIG.4 (b) slightly. The state in which the probe 612 of the friction stir tool body 611 of the friction stir tool is embedded in the abutting surface P is shown in the enlarged end view in which the abutting surface P is aligned on the rotating drum main body 712. It is explanatory drawing. Note that the bolt 731 is not drawn in the above end view. The typical front view of the continuous friction stir welding apparatus 300. FIG. The typical top view of the continuous friction stir welding apparatus 300. FIG. It is a typical perspective view which shows the place which is performing joining operation | work using the continuous friction stir welding apparatus 400. FIG.

  The present invention will be described below with reference to an embodiment shown in FIGS. This embodiment is intended to produce a long joined body by joining the strips in the width direction using the continuous friction stir welding apparatus according to the present invention.

The strip in the present invention is flexible enough to follow the curved surface of the backing having a convex curved surface, which will be described later, and is softened and bonded by embedding a rotating friction stir tool. A long material having a certain thickness and a certain width made of a material that can be formed.
The material can be friction stir welded and is not limited as long as it has flexibility, but a metal or an alloy and a composite material using them as a base material are preferable, iron, iron-based alloy, aluminum, aluminum alloy, copper, copper alloy , Magnesium, magnesium alloy, titanium, titanium alloy, iron-nickel alloy, manganese alloy, Cu-Mn alloy, Ni-Cu alloy, Ni-Cr alloy, Fe-Cr alloy, Mn-Cu-Ni alloy Examples include alloys, Pt—Pd—Ag alloys, Pd—Pt alloys, Au—Ag alloys, Au—Pt—Ag alloys, and Mn—Cu—Ni alloys.

The thickness is not particularly limited, but is 10 μm to 10 mm, preferably 30 μm to 3 mm. The width is not particularly limited, but is several mm to 1 m, preferably 10 mm to 50 mm.
The front surface and the back surface are preferably parallel, and the cross-sectional shape is not particularly limited, but a parallelogram, a trapezoid, or the like is preferable, and a rectangle is more preferable.
Moreover, although the board thickness of the strip to join is not necessarily the same, the thickness ratio is preferably 1.5 times or less.
The length should just be more than the length which can be stretched along the curved surface of the backing which has the convex curved surface mentioned below, and is 30 cm-500 m, preferably 1 m-300 m, more preferably 5 m-200 m. is there.

  Although the material of the strips to be joined may be the same, joining between different materials is preferable in terms of the function of the joined product, for example, in combination with a strip of copper and a strip of Mn-Cu-Ni alloy Can be suitably used for two-joint bonding or three-joint joining of a copper strip, a Mn-Cu-Ni alloy strip, and a copper strip.

FIG. 1 is a schematic front view of the continuous friction stir welding apparatus 200, and FIG. 2 is a plan view thereof. FIG. 3 is a perspective view schematically showing a state in which a long joined body 3 is manufactured by joining the long strip 1 and the long strip 2 using the continuous friction stir welding apparatus 200. It is. However, in FIG. 3, both the plane formed by the side face of the band plate 1 wound around the uncoiler 4 and the plane formed by the side face of the band plate 2 wound up by the uncoiler 5 are both formed. Since the same plane F is formed, for the sake of convenience, what is behind the plane F (behind the plane when viewed in perspective) is indicated by a broken line.
In any of the following drawings, the band plate 1, the band plate 2, and the joined body 3 do not constitute an apparatus, but are drawn for explaining the use state of the apparatus.

The continuous friction stir welding apparatus 200 is fed with an uncoiler 4 that feeds out one wound metal strip 1 and another uncoiler 5 that feeds out another rolled metal strip 2. A friction stir welding apparatus 6 that butts the side surfaces of both strip plates, embeds a friction stir tool 61 and friction stir welds, and a backing 7 for supporting the pressing against the strip plate by the tool 61 from the back surface of the strip plate. And a recoiler 8, a tension adjusting roller 9 and a tension adjusting roller 10 that wind up the joined body 3 which is a bonded band plate in which the side surfaces of the band plate are butt-fitted and friction stir welded.
The plane formed by the side face of the band plate 1 wound around the uncoiler 4 and the plane formed by the side face of the band plate 2 wound around the uncoiler 5 form the same plane F. The rotating shafts 41 and 51 of both uncoilers, the rotating shaft 81 of the recoiler, the rotating shaft 93 of the tension adjusting roller 9 and the rotating shaft 103 of the tension adjusting roller 10 are perpendicular to the plane F. The rotation axis 62 of the tool 61 is also on the plane F when the joint is on the abutting surface, that is, when the tool offset is zero.

  The uncoiler 4 includes a motor unit 42 and a rotating shaft 41, and the strip 1 is wound around the rotating shaft 41, and the strip 1 is drawn out by the rotation of the rotating shaft 41. The uncoiler 5 includes a motor unit 52 and a rotary shaft 51, and the strip 2 is wound around the rotary shaft 51, and the strip 2 is fed out by the rotation of the rotary shaft 51.

An uncoiler that does not have resistance to feeding may be used, but in that case, a mechanism to separately apply tension is required, for example, a combination of a roll and a pinch roll that the roll is driven and sandwiched by a roll. May be used.
If there is an adjusted resistance against feeding the strip from the uncoiler, a constant tension can be applied to the strip, and the pinch roll is not necessary. It is preferable to provide a tension applying device mechanism that applies tension to 1 and 2. Examples of such a mechanism that applies tension include a mechanism that generates and controls torque such as electromagnetic force of a motor and friction caused by a brake. The uncoilers 4 and 5 in the present embodiment are provided with a tension applying device mechanism that applies tension to the strips 1 and 2.

  The friction stir welding apparatus 6 has a friction stir tool 61. Specifically, the friction stir tool 61 (specifically, a probe 612 of a friction stir tool main body 611 described later) is abutted against the side surfaces of both belt plates. Friction stir welding is performed by embedding in the abutted surfaces.

  The friction stir tool 61 used for the friction stir welding is referred to as an end face of a cylindrical rotor, a shoulder surface at the tip of the friction stir tool main body 611 for applying rotation and pressing force for friction stir welding. And a probe 612 protruding from the shoulder surface. In the present invention, the shape of the shoulder surface is not limited, and a flat surface, a rotationally symmetric convex curved surface, conversely a rotationally symmetric concave surface or a surface on which spiral concavities and convexities are formed, etc., but a plane perpendicular to the rotational axis is used. Is preferred. The shape of the outer periphery of the shoulder surface is not particularly limited, but a circular shape is preferably used. In the present embodiment, the shoulder surface has a planar shape perpendicular to the rotation axis of the friction stir tool, and the outer periphery is circular.

  In order to join the side surfaces of the band plate 1 and the band plate 2 by friction stir welding, the side surfaces of the band plate 1 and the band plate 2 are abutted to each other, and the friction agitation tool is rotated from the surface of the band plate to the butted portion or its vicinity. This is performed by embedding 61 probes 612 and plasticizing the portion under the shoulder surface and the probe.

  In the present invention, the shape of the probe is not limited. Usually, cylindrical, frustoconical, hemispherical, etc. are used, but in order to increase the stirring efficiency, a screw, a polygonal cross section, or a cutting blade that protrudes perpendicularly to the probe rotation axis is used. May be. In the present embodiment, the probe has a cylindrical shape centered on the rotation axis.

  The material of the friction stir tool is not limited, but is preferably one that can withstand continuous processing at high temperatures, and it does not dissolve or react chemically with the resistance alloy to be joined or the metal conductor with high conductivity. Those are preferred. For this reason, for example, a Ni-based alloy or the like is preferable.

Among these, an Ni-based double-duplex intermetallic compound alloy in which Ni is 71.5%, Al is 2% to 9%, and V is 10% to 17% is preferable.
Further, Ni is the main component and Al: 2 to 9 atomic%, V: 10 to 17 atomic%, (Ta and / or W): 0.5 to 8 atomic%, Nb: 0 to 6 atomic%, Co: An Ni-based intermetallic alloy containing B: 10 to 1000 ppm by weight, or an alloy containing Re, with respect to the total weight of the composition of 0 to 6 atom%, Cr: 0 to 6 atom% and a total of 100 atom% preferable. In this embodiment, a Ni-based intermetallic compound alloy is used.

  The position of the rotating shaft of the friction stir tool for embedding the probe for butt joining may be biased to the butt portion between the band plates and the band plate or slightly to any one of the band plates. If they are biased, the distance from the abutting surface to the rotation axis is referred to as a tool offset amount, but the tool offset amount is preferably equal to or less than the radius of the probe.

  By the way, in general, in friction stir welding, the side on which the rotation direction of the probe and the joining direction coincide with each other is referred to as “AD side, AS side, forward side, or advanced side (adv a c nc ng s i d e). On the other hand, the side opposite to this advancing side is referred to as “RT side, RS side, retreat side or retreating side (re ret ti ng s ide)”.

For example, in order to join the side surfaces of a strip made of a resistance alloy and a strip made of a conductive metal, the strip made of a conductive metal is disposed on the advanced side (AD side or AS side) and butt friction stir It is preferable to join.
In particular, when the resistance alloy is an alloy composed of Cu 86%, Mn 12%, Ni 2%, and the metal conductor with high conductivity is Cu (copper), the copper strip is advanced side (AD side or AS side). It is preferable that the butt friction stir welding is performed.

  In this case, the center of the rotating shaft of the friction stirrer is preferably on the strip made of conductive metal or on the butt surface. This is because when the center of the rotating shaft of the friction stirrer is on a thin plate-like body made of a resistance alloy, it may not be possible to obtain a product with good bonding quality.

  Next, the backing will be described. A strong load is applied from the front surface to the back surface of the band plate for friction stirring from the friction stir tool to the band plate. Therefore, a backing is applied to the back side of the friction stir tool. In the processing of a strip which is a thin workpiece that is the subject of the present invention, in order to support a load and prevent deformation, it is necessary to support the strip in a wide area rather than just behind the friction stir tool.

  For the backing of the present invention, a backing having a convex curved surface is used. Friction stir welding is performed with the back of the strip along the backing. Therefore, the convex curved surface is preferably a curved surface that is curved in a convex shape in the length direction of the band plate with respect to the back surface of the band plate, and is a curved surface having a small curvature, that is, a large curvature radius.

  The size of the radius of curvature is not limited as long as the strip can be bent along the curved surface by tension, but is preferably 10 cm or more for joining a hard and thick metal strip. Although the upper limit of the radius of curvature is not limited, it is preferably several meters or less, more preferably 30 cm or more and 1 m or less in terms of the manufacturing cost of the apparatus and the layout of the manufacturing line.

  The width direction component of the strip on the convex curved surface of the backing is a straight line, and the curved surface convex in the length direction with respect to the strip (the width direction is a straight line, and the cross section in the length direction is a circle, an ellipse, or a parabola. It is preferable that a part of a hyperbola or a combination thereof (a quadric surface) is formed. However, even if a plane that smoothly touches a part of the convex curved surface is included, the starting point and the end point may have at least the curved surface, and may form a convex curved surface as a whole.

  Since the component corresponding to the width direction of the convex curved strip is a straight line, the center of curvature is determined in each portion of the convex curved surface. In the case of a cylindrical surface, the center of curvature is the central axis.

  Such a backing may be one in which, for example, narrow diameter rollers are closely arranged and the envelope of the outer peripheral surface of the rollers forms a part of the longitudinal cross section such as a circle, ellipse, parabola, hyperbola, etc. However, since the structure becomes complicated and the belt plate is not in line contact with the belt plate, it is preferable to support the load on a continuous surface such as a rotating drum or a belt that forms an endless track. A curved surface having a cylindrical side surface, that is, a rotating drum is preferable because it is easy to manufacture and operate.

The back of the strip is lined with the backing. The term “along” refers to a state in which the backing plate and the backing plate are in surface contact with each other in the vicinity where the friction stir tool is embedded, instead of contacting the backing plate with the line or in a very small area. This is to prevent deformation in the thickness direction of the strip due to the load by the friction stir tool.
It is preferable that the strip is stretched along the longitudinal direction before and after being placed along the backing because the strip is uniformly adhered to the convex surface of the backing. In order to keep it along, pressing with a roller or the like from the surface of the plate may be used in combination.
Several mm to several m, preferably 10 cm to 1 m, more preferably 20 cm to 50 cm, and more preferably 20 cm to 50 cm in the length direction of the band plate before and after the place where the friction stir tool is embedded, and the band plate is in surface contact with the backing. It is preferable. This is because the load from the friction stir tool is dispersed and the deformation in the thickness direction is effectively suppressed by the surface contact.
Further, in the state of surface contact, it is necessary to restrain the side surface of the strip in the width direction in order to prevent the side surface of the strip along the backing from expanding in the width direction due to the friction stir tool insertion. This is because if it cannot be effectively prevented, deformation occurs. In this case, if the side surface of the strip is constrained to a point, stress is concentrated and the side edge of the strip is easily deformed. However, by restraining at least the entire side surface, deformation of the side surface can be effectively prevented. It also has the effect.

  It is preferable that the strip along the backing surface and the surface portion of the backing along which the strip is placed move at a constant speed relative to the friction stir tool so that there is no difference in speed. This is because if there is a difference in speed, friction occurs between the band plate and the backing surface, and the backing or bonded product may be worn out or damaged. Therefore, the backing is driven so that the surface in contact with the strip moves at the same speed as the strip, or a strong load is applied from the friction stir tool and tension is applied to bring the strip along the backing. Therefore, the backing surface along the strip is free to rub without resistance so that the strip along the backing surface and the surface portion of the backing along the strip are at the same speed. Those that move relative to the stirring tool are preferred. In particular, if the backing rotates, it can rotate freely and rotate at a low load so that it can be rotated to the same peripheral speed as the strip. This is preferable because it is not necessary to perform speed control.

  The backing preferably includes a temperature adjusting mechanism for maintaining a constant temperature during friction stir welding. This is because stable bonding quality can be obtained even with seasonal fluctuations and long-time operation.

Next, a method and apparatus for restraining in the width direction will be described.
The band plate 1 and the band plate that are faced to each other along the convex curved surface of the backing before and after the probe is embedded by butting the side surface of the band plate 1 and the side surface of the band plate 2 2 is a tool for friction stir welding at or near the butted portion in a state in which the butted strips 1 and 2 are restrained in the width direction so that they do not spread in the width direction due to the insertion of the probe. Insert the probe and join.

If not restrained, the probe of the tool for friction stir welding is embedded so as to expand in the width direction, and the joined product is deformed.
The restraint in the width direction is performed on the band plate along the convex curved surface of the backing before and after the probe is embedded.
The method of restraining in the width direction is not limited. For example, it is possible to prevent the belt from spreading from the surface of the band plate by a plurality of rotating elastic pressure rollers having a rotation axis parallel to the length direction of the band plate.

  Further, apart from the backing, expansion may be prevented by restraining or pressing the side surface of the strip along the backing with a width direction restraint along the side of the strip. However, if the width direction restraint is fixed with respect to the movement of the band plate, friction occurs between the width direction restraint and the side surface of the band plate. It is preferable that the plate or the bonded strip can move at a constant speed. For example, when the backing is a rotary drum, the width direction restraint also has the same rotation axis as the rotation axis of the rotation drum, and the inner diameter rotates. Even if the ring body is adjacent to the surface corresponding to the bottom surface of the cylinder of the rotating drum having substantially the same diameter as the drum, the side surface of the ring body is in contact with the side surface of the belt plate and is pressed or restrained. Good.

Among them, it is more preferable that the backing is provided with a width direction restraining tool for restraining in the width direction because the device can be restrained easily and reliably and there is no friction if the speed is the same.
On the convex surface of the backing, a groove having a width substantially equal to the width of the abutted band plate and a depth of approximately the thickness of the band plate is provided, and the band plate abutted in the groove is a convex surface in the groove The tool may be embedded in a state of being stretched along, or the thickness of the strip approximately equal to or greater than the width of the strip that is abutted on both sides to the convex surface of the backing. A band may be provided, and the tool may be embedded in a state in which a band plate abutted between the bands is aligned with a convex surface in the groove.

The width direction restraining tool that restrains the backing in the width direction may have a mechanism that applies a pressing force against the expansion in the width direction.
For example, there may be mentioned a mechanism in which one side surface of the portion where the abutted strip is along the rotary drum is fixed in the width direction and pressed from the opposite side surface of the abutted strip. Although the means to press is not limited, For example, the method of obtaining clamping | tightening force via a spring material etc. are mentioned.

  The backing 7 of the present embodiment is a rotatable cylindrical rotating drum 71 provided with a width direction restraining tool that prevents the band plate from expanding in the width direction, and has a curved surface shape of the rotating drum 71. The strips 1 and 2 and the joined body 3 which is a joined strip are provided along a side surface portion, and the rotary drum 71 is rotated together with the strips 1 and 2 and the joined body 3 which is a joined strip. It is something that has come to be. The temperature can be adjusted by passing a temperature adjusting heater or chiller or a heat medium having a constant temperature. In this embodiment, the temperature is adjusted by a combination of a heater and a chiller.

  The rotating drum 71 preferably has a position adjusting mechanism so that the position of the rotating shaft 711 can be changed in the length direction of the strips 1 and 2. In this embodiment, the rotary shaft of the rotary drum can be slid so as to be movable back and forth in the length direction of the strip along which the rotary shaft is aligned, and its position can be fixed. This rotating drum will be described in detail later.

The recoiler 8 that winds up the joined body 3 which is a joining strip plate in which the side surfaces of the strip plate are butt-friction-stirred and joined is composed of a motor unit 82, a rotary shaft 81, a winding drive unit, and a tension adjusting mechanism. The joined body 3 is wound by the rotation of 81.
Since the recoiler also preferably has a winding tension adjusting mechanism, an adjusting mechanism for a mechanism for generating and controlling the electromagnetic force of the motor and torque such as friction caused by a brake is attached. A mechanism that gives a separate tension, such as a pinch roller that feeds in the length direction of the joined strip while applying tension to the joined strip by sandwiching the roll and the strip joined by the roll Although it may be a long one, since it is necessary to wind later, it is simple and preferable to use a recoiler having an adjusted winding tension.
For this reason, the recoiler 8 of this embodiment has a winding force, and the winding force can be adjusted. By adjusting the winding force of the recoiler 8, a constant tension can be applied to the strip along the backing, and by synchronizing with the uncoiler, the strip can be frictionally agitated with a constant tension applied. It can be moved relative to the tool.

  A pinch roller is provided as a drive mechanism for moving the belt plate downstream of the recoiler or in place of or between the recoiler, and a punching mechanism for punching the joined belt plate on the downstream side, cutting for cutting. A mechanism, a cutting mechanism for cutting, a polishing mechanism for polishing, a rolling mechanism for rolling, or a pressing mechanism for pressing can be provided, and the joined strip can be punched, cut, cut, ground, rolled, pressed, or the like. In such in-line secondary processing of the joined body, it is preferable to synchronize the secondary processing step with the line speed.

  In continuous friction stir welding apparatus 200, the plane formed by the side surface of the band plate 1 wound around the uncoiler 4 and the side surface of the band plate 2 wound around the uncoiler 5 is formed by the side surface. Form the same plane F, and the rotation shafts 41 and 51 of both uncoilers, the rotation shaft 81 of the recoiler, the rotation shaft 93 of the tension adjusting roller 9 and the rotation shaft 103 of the tension adjusting roller 10 both intersect perpendicularly with the plane F. Yes.

  In order to explain the plane F described above, in the perspective view of FIG. 3, for the sake of convenience, what is behind the plane F (behind the plane when viewed in perspective) is indicated by a broken line. In addition, what is in front of the plane F is indicated by a solid line. The rotation axis 62 of the tool 61 is also on the plane F when the joint is on the abutting surface, that is, when the tool offset is zero. FIG. 3 shows a case where the tool offset is zero. In FIG. 3, the plane including the abutting surface P where the side surface of one metal strip 1 and the side surface of another metal strip 2 butted against the side surface are abutted is also on the plane F.

  The continuous friction stir welding apparatus 200 according to the present invention is preferably further backed between the feeding portions 43 and 53 of the strips of the uncoilers 4 and 5 and the portion where the strips are in contact with the rotating drum 71. The tension adjusting roller 9 has a tension adjusting roller 9 so that a tension having a pressing component in the backing direction for alignment can be applied, and the lowest portion 92 of the outer peripheral surface 91 of the tension adjusting roller 9 is a plane connecting the two parts (that is, The flat surface connecting the uncoiler strip feed part and the part where the strip comes into contact with the rotating drum, and the uncoiler strip feed part is represented by a straight line along the outer surface of the uncoiler. The portion in contact with the rotating drum is also represented by one straight line along the outer peripheral surface of the rotating drum (the side surface portion having the curved surface of the rotating drum). The strips 1 and 2 are placed along the lower surface of the tension adjusting roller 9, and the strips 1 and 2 are placed along the rotary drum 71. ing. That is, the tension adjusting roller 9 applies a pressing force to the strips 1 and 2 in a direction approaching the backing, and causes the strips 1 and 2 to follow the rotating drum.

  The rotating shaft 93 of the tension adjusting roller 9 intersects with a plane having the rotating shaft 62 of the friction stir tool 61 perpendicularly.

  The position of the rotary shaft 93 of the tension adjusting roller 9 is variable in distance from the plane connecting the two portions (that is, the plane connecting the feeding portion of the strip plate of the uncoiler and the portion where the strip plate contacts the rotary drum). It is preferable that it is made so. The tension adjusting roller 9 may be rotated with the band plate, or may be rotationally driven to assist the moving force of the band plate with respect to the friction stir tool.

  In the continuous friction stir welding apparatus 200 of the present invention, preferably, a band further joined between a winding portion 83 of the joined body 3 of the recoiler 8 and a portion where the joined body 3 contacts the rotating drum 71. A tension adjusting roller 10 is provided for adjusting the tension so that the plate follows the rotating drum, and the lowest part 102 of the outer peripheral surface 101 of the tension adjusting roller 10 is a plane connecting the two parts (that is, joining the recoiler 8). A plane connecting the winding portion 83 of the body 3 and the portion where the joined body 3 is in contact with the rotating drum 71. The winding portion 83 of the joined body 3 of the recoiler 8 is one along the outer peripheral surface of the recoiler 8. The portion where the joined body 3 is in contact with the rotating drum 71 is also expressed by a single straight line along the outer peripheral surface of the rotating drum (the side surface portion having the curved surface shape of the rotating drum). this A plane connecting the two straight lines), and the joint 3 is placed along the lower surface of the tension adjusting roller 10, and then the joint 3 is wound around the recoiler 8. ing.

  The rotating shaft 103 of the tension adjusting roller 10 intersects the plane having the rotating shaft 62 of the friction stir tool 61 perpendicularly. In this embodiment, it is driven to rotate at the same peripheral speed as the movement of the strip.

  The position of the rotary shaft 103 of the tension adjusting roller 10 is a plane connecting the two portions (that is, a plane connecting the winding portion 83 of the joined body 3 of the recoiler 8 and the portion where the joined body 3 contacts the rotating drum 71). It is preferable that the distance from is variable.

  FIG. 4 is a plan view schematically showing the main part of the rotating drum 71 of the present embodiment. FIG. 4 (a) shows a state in which there is no band plate for joining, and FIG. 4 (b) shows joining work. It is in a state. Hereinafter, a description will be given with reference to FIG. The rotating drum 71 includes a rotating drum main body 712 formed of a cylindrical body, a rotating shaft 711, and a drum bearing 713, and the drum bearing 713 is placed on a drum bearing base 714 (described in FIGS. 1 and 2).

In this rotary drum 71, the band plate 1, 2 and the joined body 3, which is a joined band plate, are placed along a curved side surface portion 715 of the rotary drum 71. The plates 1 and 2 are joined together with the joined body 3 which is a joined strip.
The position of the rotary shaft of the rotary drum is movable back and forth with respect to the length direction of the band plate. As will be described later, this is because the position where the probe is embedded can be adjusted with respect to the backing.

  In the continuous friction stir welding apparatus 200 according to the present invention, one side surface 11 of one strip 1 and one side surface of another strip 2 along the curved side surface portion 715 of the rotary drum body 712. 21, in order to prevent expansion in the width direction, the abutting portion is connected to the abutting portion from one or both of the other side surface 12 of the at least one band plate 1 and the other side surface 22 of the other band plate 2. It is preferable to have a mechanism for applying a pressing force in the direction toward the head. Examples of the mechanism for applying the pressing force include a mechanism for fixing the one side surface of the portion along which the abutted band plate extends along the rotating drum in the width direction and pressing it from the opposite side surface of the abutted band plate, and the like. Examples of the pressing method include a method of obtaining a tightening force through a spring material.

  In the rotating drum 71 shown in FIG. 4, ribs 720 that are in contact with the other side surface 22 of the one strip 2 are erected at the end portion 716 of the side surface portion 715 that has a curved surface of the rotating drum main body 712. A pressing means for contacting and pressing the other side surface 12 of the other band plate 1 is attached to the rotating drum. As the pressing means, a spring 730 is provided, and the spring 730 presses the pressing plate 740 by tightening the nut 732 of the bolt 731 penetrating the inside of the rotating drum body 712, thereby rotating the pressing plate 740. A movable rib 750 adjacent to the drum main body 712 is pressed against the rotary drum main body 712 and is in contact with the side surface of the strip existing on the rotary drum main body 712 to press the band plate. A plurality of bolts 731 having the spring 730 and penetrating the inside of the rotating drum body 712 are provided so that the pressing plate 740 can press the movable rib 750 in a balanced manner. ing.

  As a width direction restraining tool for restraining in the width direction, a groove having substantially the same width as the combined width of the band plate and the band plate is provided in the curved side surface portion 715 of the rotating drum body 712. The belt plate and the belt plate may be guided in a state where the side surfaces are in contact with each other in the groove. This is because expansion in the width direction is suppressed at the side wall of the groove.

  FIG. 4B shows a state in which the rotating drum 71 is being joined. The strip to be joined proceeds in the direction indicated by the arrow. First, in a state where one side surface 11 of one belt plate 1 and one side surface 21 of the other belt plate 2 are abutted, the belt plate lies along the curved side surface portion 715 of the rotating drum body 712. Is done. Since the movable rib 750 pressed by the pressing means is in contact with the other side surface 12 of the one band plate 1 and the rib 720 is in contact with the other side surface 22 of the other band plate 2, The surface where one side surface 11 of the plate 1 and one side surface 21 of the other band plate 2 are abutted firmly adheres firmly. In this state, even if the probe 612 of the friction stir tool main body 611 of the friction stir tool 61 is embedded in the surface abutted in the vicinity of the apex of the rotary drum 71, expansion in the width direction is suppressed and the rotating drum is caused by tension. Therefore, friction stir welding is performed without deformation. After being joined, the joined body 3 proceeds in the direction of the arrow and is finally wound around the recoiler.

In the continuous friction stir welding apparatus of the present invention, the angle formed by the rotation axis of the friction stir tool and the tangent plane of the band plate in which the probe is embedded in the band plate from the unbonded side of the band plate is an obtuse angle. It is preferable. This will be described with reference to FIG.
In FIG. 5A, the side surfaces of the band plate 1 and the band plate 2 are abutted against each other on the backing 7 having a convex curved surface, and the side surface of the backing 7 is curved along the curved surface due to tension from diagonally downward on both sides. The probe of the friction stir tool main body 611 (at the tip of the friction stir tool main body 611 and embedded in the band plate butting portion, the probe is not visible) is inserted in the perspective view. is there. On the surface of the band plate along the backing 7 in the portion where the probe is inserted, the backing 7 has a tangential plane H in contact with the portion where the probe is inserted because the width direction component is a straight line. The angle θ formed between the tangential plane H and the rotating shaft 62 of the friction stir tool body 611 is an obtuse angle. For the sake of brevity, the width direction restraining tool for restraining the expansion in the width direction is omitted in the drawing.

FIG. 5B is a side view of FIG. The side where the strip is supplied to the backing 7 formed by the tangent plane H and the rotating shaft 62 of the friction stirrer tool in a state where the strip is aligned with the backing 7 having a convex curved surface (so that the supply side is easy to understand) In the drawing, the moving direction of the band plate is indicated by an arrow), and the angle θ on the side going toward the friction stir tool body 611 is an obtuse angle.
In FIG. 5, θ is excessively shown for emphasis, but θ is preferably 90 ° <θ <130 °, 91 ° <θ <110 °, and more preferably 92 ° <θ <95 °. .
In the present invention, since butt-joining is performed, there is a case where one of the strips rides on the other strip when the strip is placed on the backing. Inserting a friction stir tool has the effect of suppressing the ride. In this case, when the rotation axis of the friction stir tool is perpendicular to the surface of the belt plate, the front surface of the shoulder is inserted too much into the material, so that the material is swept away and the riding-up suppressing effect is small. In this case, it is preferable to provide a mechanism for preventing climbing. On the other hand, if the angle θ formed between the rotating shaft of the friction stir tool and the tangent plane is made an obtuse angle, it is possible to effectively suppress the ride-up, and it is possible to join without ride-up even without a mechanism for preventing the ride-up.

For this reason, when the rotation axis of the friction stir tool is perpendicular or perpendicular to the floor surface of the production line, the position in the length direction of the strip where the probe of the friction stir tool is embedded in the strip is It is preferably in front of the axis having the center of curvature of the curved surface portion in which the convex probe is embedded (the side on which the strip is supplied to the backing).
Thus, for example, in the case of a rotating drum whose convex curved surface is a cylindrical side surface, the center of curvature of the cylindrical side surface coincides with the rotation axis of the drum, but the band plate in which the probe of the friction stir tool is embedded in the band plate It is preferable that the position in the length direction is biased toward the side to which the band plate is supplied (uncoiler side) from the center of the rotating drum.
In this embodiment, the rotating shaft 62 of the friction stirring tool body 611 of the friction stirring tool 61 is disposed closer to the uncoiler than the rotating shaft 711 of the rotating drum 71 because the rotating shaft 62 is in the straight direction.

  FIG. 6 is a view for explaining a state in which the probe 612 of the friction stir tool main body 611 of the friction stir tool is embedded in the abutting surface P, and is an end view taken along the line VV in FIG. The probe 612 of the friction stir tool main body 611 of the friction stir tool is embedded in the abutting surface P in the case where the abutting surface P is along the rotating drum main body 712 shown in the enlarged end view of FIG. It is explanatory drawing which showed the mode. Note that the bolt 731 is not drawn in the above end view.

  In the present invention, as shown in FIG. 6A, the rotation shaft 62 of the friction stir tool main body 611 of the friction stir tool is perpendicularly directed from the center O of the rotation shaft 711 of the rotary drum main body 712 toward the apex T of the rotary drum. It may be on the extended straight line R (that is, the extension line of the rotary shaft 62 of the friction stir tool main body 611 of the friction stir tool intersects the rotary shaft 711 of the rotary drum 71). However, as shown in FIG. 6B, the rotating shaft 62 of the friction stirring tool body 611 of the friction stirring tool extends vertically from the center O of the rotating shaft 711 of the rotating drum body 712 toward the apex T of the rotating drum. The position of the axis of the rotating drum is adjusted and set so that S is closer to the uncoiler than the straight line R.

When the rotation shaft 62 of the friction stir tool main body 611 of the friction stir tool is close to the uncoiler by S, a gap 63 is formed between the surface P (butting surface) of the strip and the shoulder 613 surface of the friction stir tool main body 611. This is because the angle with which the belt plate comes into contact with the shoulder surface of the friction stir tool is inclined, so that the joining quality is good and stable joining can be performed.
For this reason, it is preferable that the distance in the length direction of the belt plate between the friction stir tool rotating shaft and the backing is relatively variable, and either or both of the friction stir welding apparatus and the backing are It is preferable to be movable.

  In the continuous friction stir welding apparatus of the present invention, the friction stir tool, the drive mechanism for rotating the friction stir tool, the drive mechanism for moving the friction stir tool in the direction of the rotation axis, and the rotational axis direction for embedding the friction stir tool It is preferable that a load mechanism for applying a load is provided, and a rotation shaft position changing drive mechanism for the friction stir tool is provided so that the position of the rotation shaft of the friction stir tool can be changed in the longitudinal direction and / or the width direction of the strip. Here, the drive mechanism that moves the friction stir tool in the direction of the rotation axis means that the probe at the tip of the friction stir tool is kept away from the strip when the device starts up, and the friction stir tool reaches a certain number of rotations. At this point, the probe is embedded by moving the friction stir tool toward the strip.

  Adjusting and changing the rotational axis position of the friction stirrer tool back and forth in the length direction of the strip is because the rotational axis position of the friction stirrer tool is moved relative to the curved surface of the backing by the bonding material. This is because the angle (θ) formed by the rotating shaft of the friction stir tool and the tangent plane of the surface of the band plate at the embedded position can be adjusted so that a suitable joining quality can be obtained.

  Adjusting and changing the position of the axis of rotation of the friction stir tool back and forth in the width direction of the strip depends on the combination of the width and material of the material used for bonding, This is because an appropriate offset amount can be adjusted by this, so that a suitable joining quality can be obtained.

  Next, a method for manufacturing the joined body 3 by joining the strip 1 and the strip 2 using the continuous friction stir welding apparatus 200 will be described.

  The strip 1 is unwound from the uncoiler 4, the strip 2 is unrolled from the uncoiler 5, the side surfaces of the unrolled strips are butted together, and the butted strips are placed along the lower surface of the outer peripheral surface 91 of the tension adjusting roller 9. Then, along the side surface portion 715 having a curved shape of the rotating drum body 712 of the rotating drum 71 shown in FIG. 4, and further along the lower surface of the outer peripheral surface 101 of the tension adjusting roller 10, Let the recoiler 8 take up.

The position of the rotation shaft of the rotating drum is finely adjusted back and forth so that the angle formed by the friction stirring tool rotation shaft and the tangent plane of the strip is an obtuse angle with an appropriate value.
The heater and chiller are operated so that the temperature of the rotating drum can be maintained at a constant temperature.

  Next, the spring 730 presses the pressing plate 740 by tightening the nut 732 of the bolt 731 passing through the inside of the rotating drum main body 712, thereby rotating the movable rib 750 adjacent to the pressing plate 740. It is pressed against the drum main body 712 side and presses one side surface opposite to the butting surface of the butted band plate present on the rotating drum main body 712. Since the rib 720 is present on the other side opposite to the butting surface of the butted band plate present on the rotating drum body 712, the butted band plate existing on the rotating drum body 712 is the rib 720. And the butted surfaces are tightly adhered to each other.

  In this state, the positions (heights) of the tension adjusting roller 9 and the tension adjusting roller 10 are adjusted so that sufficient tension is applied to the two band plates that are abutted.

  The position of the rotating shaft of the friction stir tool is finely adjusted and fixed in the width direction of the strip so that the position of the strip with respect to the butting portion is on the butting portion or an appropriate offset amount.

  Next, the friction stir tool 61 of the friction stir welding apparatus 6 is rotated. When the friction stir tool 61 reaches a certain number of revolutions, the friction stir tool 61 is moved in the direction of the band plate, and the probe 612 is embedded in or near the butted portion of the band plate, and the probe is embedded. And plasticizing the lower surface of the shoulder 613. When plasticization necessary for the friction stir welding is performed, the motor unit 82 of the recoiler 8 including the motor unit 82, the rotation shaft 81, and the winding tension adjusting mechanism is moved, the rotation shaft 81 is rotated, and the belt plate is moved. The wound strip is wound around the recoiler 8. Further, simultaneously with the operation of the motor unit 82 of the recoiler 8, the motor 42 of the uncoiler 4 and the motor 52 of the uncoiler 5 are also operated to feed out the strip. The joined body 3 in which the two strips are joined to the recoiler 8 is wound up.

As described above, the joined body was continuously produced with good joining quality, no distortion due to deformation, and could be produced satisfactorily. Specific production conditions and the like were as follows.
Band plate 1: The material is copper-based C1020. The width is 37 mm. The length is 100m. Thickness is 2.0mm.
Strip 2: The material is manganin. The width is 10mm. The length is 100m. Thickness is 2.0mm.
The diameter of the rotating drum is 500 mm. The length of the strip contacting the rotating drum is about 500 mm.
The tension is 1 kg weight / mm ² .
The moving speed of the strip is 100 mm / min.
The friction stir tool is made of Ni-based dual phase intermetallic compound alloy.
The angle θ between the rotating shaft 62 of the friction stir tool main body 611 and the tangent plane of the strip where the probe is embedded in the strip is 94 °.
The distance S between the straight line R and the rotating shaft 62 of the friction stir tool body 611 is 17 mm.
The rotational speed of the friction stir tool is 800 rpm to 1200 rpm.
The load of the friction stir tool is about 500 kg.
The rotating drum temperature is 50 ° C.

  Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. In this embodiment, a continuous bonded stir welding apparatus 300 according to the present invention is used to manufacture a long bonded body by bonding three long strips. At that time, a joined body of two strips is first prepared, and then a third strip is joined thereto.

  FIG. 7 is a schematic front view of the continuous friction stir welding apparatus 300, and FIG. 8 is a plan view thereof. In any of the drawings, the band plate 1, the band plate 2, the band plate 2A, the joined body 3 and the joined body 3A do not constitute an apparatus, but are drawn for explaining the use state of the apparatus.

  The continuous friction stir welding apparatus 300 is fed with an uncoiler 4 that feeds out one wound metal strip 1 and another uncoiler 5 that feeds out another rolled metal strip 2. A friction stir welding apparatus 6 that butts the side surfaces of both strip plates, embeds a friction stir tool 61 and friction stir welds, and a backing 7 for supporting the pressing against the strip plate by the tool 61 from the back surface of the strip plate. And a joined body 3 which is a joined strip plate in which the side surfaces of the strip plates are butt-friction-stirred and joined, an uncoiler 5A for unwinding one wound metal strip 2A, the joined body 3 and the drawn-out The friction stir welding apparatus 6A that butts the side surfaces of the strip 2A and embeds the friction stir tool 61A and friction stir welds and supports the pressing of the tool 61A against the strip from the back side of the strip The contact 7A, the recoiler 8A that winds up the joined body 3A, which is a joined band plate in which the side surfaces of the joined body 3 and the strip plate 2A are abutted and friction stir welded, the tension adjusting roller 9, the tension adjusting roller 10, and the tension adjusting roller 9A and a tension adjusting roller 10A.

Of the continuous friction stir welding apparatus 300, “an uncoiler 4 that unwinds one wound metal strip 1, another uncoiler 5 that unwinds another rolled metal strip 2, and The friction stir welding apparatus 6 that butts the side surfaces of both the fed strips, embeds the friction stir tool 61 and friction stir welds, and supports the pressing of the tool 61 against the strip from the back side of the strip Up to the backing 7 and the joined body 3 ”, which is a joining strip in which the side surfaces of the strip are abutted and friction stir welded, is the same as the continuous friction stir welding apparatus 200. Therefore, the description is abbreviate | omitted by attaching | subjecting the same code | symbol to what has the same function as the continuous friction stir welding apparatus 200. FIG.
The continuous friction stir welding apparatus 300 includes a plane formed by a side surface of the band plate 1 wound around the uncoiler 4 and a side surface of the band plate 2 wound around the uncoiler 5 and a side surface thereof. Form the same plane, the rotation shafts 41 and 51 of both uncoilers, the rotation shaft 81A of the recoiler, the rotation shaft of the tension adjustment roller 9, the rotation shaft of the tension adjustment roller 10, the rotation shaft 93A of the tension adjustment roller 9A and the tension adjustment. Both the rotating shafts 103A of the roller 10A intersect perpendicularly with the same plane. The rotation axis 62 of the tool 61 is also on the same plane when the joint is on the abutting surface, that is, when the tool offset is zero.

  In the continuous friction stir welding apparatus 300, an uncoiler that feeds one wound metal strip 2A wound downstream of a joined body 3 in which the side surfaces of the strip 1 and the strip 2 are joined by butt friction stir welding. 5A, a friction stir welding apparatus 6A that butts the side surfaces of the joined body 3 and the fed strip 2A, embeds a friction stir tool 61A, and performs friction stir welding, and the band by the tool 61A. A backing 7A for supporting the pressure on the plate from the back side of the band plate, and a recoiler 8A for winding the bonded body 3A, which is a bonded band plate in which the side surfaces of the bonded body 3 and the band plate 2A are abutted against each other and friction stir bonded, are provided. It has been.

  In the continuous friction stir welding apparatus 300, the side surface of the bonded body 3 to be abutted is on a plane formed by the side surface of the band plate 2A that is wound around the uncoiler 5A, and the uncoiler 5A The rotating shaft 51A, the rotating shaft 81A of the recoiler 8A, the rotating shaft 93A of the tension adjusting roller 9A, and the rotating shaft 103A of the tension adjusting roller 10A intersect perpendicularly. The rotation axis 62A of the tool 61A is located on the abutting surface, that is, when the tool offset is 0, the rotation axis 62A of the tool is also on the plane. There is a plane including the side surface of the body 3 and the butting surface P1 of the side surface of the metal strip 2A to be butted against the side surface.

  The uncoiler 5A includes a motor unit 52A and a rotating shaft 51A, and a belt plate 2A is wound around the rotating shaft 51A, and the belt plate 2A is drawn out by the rotation of the rotating shaft 51A.

The uncoiler 5A is preferably provided with a mechanism for applying a constant tension to the band plate 2A by showing an adjusted resistance against rewinding. Examples of such a mechanism that applies a constant tension include a mechanism that generates and controls torque such as electromagnetic force of a motor and friction caused by a brake. For this reason, the uncoiler 5A of this embodiment is provided with a mechanism for applying tension to the band plate 2A by showing the adjusted resistance against unwinding.

  The friction stir welding apparatus 6A includes a friction stir tool 61A. The probe 612A of the friction stir tool main body 611A of the friction stir tool 61A is abutted by joining the side surfaces of the joined body 3 and the side surfaces of the strip 2A. It is embedded in the surface P1 and friction stir welding is performed.

  Since the friction stir tool 61A used for the friction stir welding is the same as the friction stir tool 61 described above, detailed description thereof is omitted.

  The backing 7A for supporting the pressing of the strip by the tool 61A from the back side of the strip has a flat plate shape, a curved surface, etc., and a preferable backing 7A is a rotatable cylinder. The rotary drum 71A has a shape, and the joined body 3, the band plate 2A, and the joined body 3A which is a joined strip are placed along a curved side surface portion of the rotary drum 71A. Are rotated together with the joined body 3, the strip 2A and the joined body 3A which is the joined strip.

  The rotating drum 71A preferably has a position adjusting mechanism so that the position of the rotating shaft 711A can be changed in the longitudinal direction of the joined body 3 and the band plate 2A. In this embodiment, the rotary shaft of the rotary drum can be slid so as to be movable back and forth in the length direction of the strip along which the rotary shaft is aligned, and its position can be fixed. Since the rotating drum 71A is the same as the rotating drum 71, a detailed description thereof will be omitted. Also in this embodiment, the temperature is adjusted by a combination of a heater and a chiller.

A recoiler 8A that winds up the joined body 3A, which is a joining band plate in which the side surfaces of the strips are butt-friction-stirred, is composed of a motor unit 82A, a rotating shaft 81A, a winding drive unit, and a tension adjusting mechanism. The joined body 3A is wound by the rotation of 81A. Since the recoiler 8A also preferably has a take-up tension adjusting mechanism, an adjusting mechanism for a mechanism for generating and controlling the electromagnetic force of the motor and torque such as friction caused by a brake is attached.
The adjusted winding force of the recoiler 8A can add a constant tension for bringing the strip and the joined strip along the backing, and by synchronizing with each uncoiler, a constant tension can be obtained. It can be moved relative to the friction stir tool in the given state.

  A pinch roller is provided as a drive mechanism for moving the belt plate downstream of the recoiler or in place of or between the recoiler, and a punching mechanism for punching the joined belt plate on the downstream side, cutting for cutting. A mechanism, a cutting mechanism for cutting, a polishing mechanism for polishing, a rolling mechanism for rolling, or a pressing mechanism for pressing can be provided, and the joined strip can be punched, cut, cut, ground, rolled, pressed, or the like. In such in-line secondary processing of the joined body, it is preferable to synchronize the secondary processing step with the line speed.

  The continuous friction stir welding apparatus 300 of the present invention preferably has a tension adjusting roller 9A between the feeding portion 53A of the strip 2A of the uncoiler 5A and the portion where the strip 2A contacts the rotary drum 71A. The lowest portion 92A of the outer peripheral surface 91A of the tension adjusting roller 9A is a plane connecting the two portions (that is, a plane connecting the feeding portion of the strip plate of the uncoiler and the portion where the strip plate is in contact with the rotating drum. The feeding portion of the belt plate is represented by a single straight line along the outer peripheral surface of the uncoiler, and the portion where the belt plate is in contact with the rotating drum is also the outer peripheral surface of the rotating drum (the side surface portion having the curved surface of the rotating drum). It is represented by a single straight line along the surface of the tension adjusting roller 9A and is located below the plane connecting the two straight lines). Serial assembly 3, from and along the strip 2A, the bonding member 3 to the rotary drum 71A, which is to be along the strip 2A. That is, the tension adjusting roller 9A applies a pressing force to the joined body 3 and the strip plate 2A in a direction approaching the backing, and causes the joined body 3 and the strip plate 2A to follow the rotating drum.

  In addition, the rotating shaft 93A of the tension adjusting roller 9A intersects perpendicularly with the plane having the rotating shaft 62A of the friction stir tool 61A.

  The position of the rotary shaft 93A of the tension adjusting roller 9A is variable in distance from the plane connecting the two portions (that is, the plane connecting the uncoiler strip feeding portion and the strip contacting the rotating drum). It is preferable that it is made so. The tension adjusting roller 9A may be rotated with the strip or may be rotationally driven to assist the moving force of the strip with respect to the friction stir tool.

  In the continuous friction stir welding apparatus 300 according to the present invention, preferably, a belt further joined between the winding portion 83A of the joined body 3A of the recoiler 8A and the portion where the joined body 3A contacts the rotating drum 71A. A tension adjusting roller 10A for adjusting the tension so that the plate follows the rotating drum is provided, and the lowest part 102A of the outer peripheral surface 101A of the tension adjusting roller 10A is a plane connecting the two parts (that is, joining the recoiler 8A). A plane connecting the winding portion 83A of the body 3A and the portion where the joined body 3A is in contact with the rotating drum 71 A. The winding portion 83A of the joined body 3A of the recoiler 8A is one along the outer peripheral surface of the recoiler 8A. The part represented by a straight line and where the joined body 3A is in contact with the rotating drum 71A is also the outer peripheral surface of the rotating drum (the side surface portion having the curved surface of the rotating drum). ), But is located below the plane connecting the two straight lines), and the joined body 3A is placed along the lower surface of the tension adjusting roller 10A. The joined body 3A is wound around the recoiler 8A.

  The rotation shaft 103A of the tension adjusting roller 10A intersects perpendicularly with the plane having the rotation shaft 62A of the friction stir tool 61A. In this embodiment, it is driven to rotate at the same speed as the movement of the strip.

  The position of the rotary shaft 103A of the tension adjusting roller 10A is a plane connecting the two portions (that is, a plane connecting the winding portion 83A of the joined body 3A of the recoiler 8A and the portion where the joined body 3A is in contact with the rotating drum 71A). It is preferable that the distance from is variable.

Also in the continuous friction stir welding apparatus 300 of the present invention, as in the continuous friction stir welding apparatus 200, one side surface of the joined body 3 along the curved side surface portion of the rotating drum body and one side of the strip 2A. In order to prevent expansion in the width direction in a state in which the side surface of the belt is abutted, a pressing force is applied in a direction toward at least the abutting portion from at least one of or both of the other side surface of the joined body and the other side surface of the band plate 2A. It is preferable to have a providing mechanism. As a mechanism for applying the pressing force, as in the case of the continuous friction stir welding apparatus 200, one side of the portion where the abutted strip is along the rotary drum is fixed in the width direction, and the opposite direction of the straddled strip is Examples include a mechanism that presses from the side,
Examples of the pressing method include a method of obtaining a tightening force through a spring material. In the present embodiment, a mechanism similar to that shown in FIG. 4 is used.

  In the continuous friction stir welding apparatus 300 of the present invention, the positional relationship between the rotation shaft 62A of the friction stir tool body 611A of the friction stir tool 61A and the rotation shaft 711A of the rotation drum 71A is as shown in FIG. The positional relationship between the rotating shaft 62 of the friction stirring tool main body 611 and the rotating shaft 711 of the rotating drum 71 of the friction stirring tool 61 shown in the drawing is the same, and in this embodiment, the friction stirring tool 61A and the rotating drum 71A are continuous. The same friction stir tool 61 and rotating drum 71 in the friction stir welding apparatus 200 were used.

  In the continuous friction stir welding apparatus 300 of the present invention, the friction stir tool, the drive mechanism for rotating the friction stir tool, the drive mechanism for moving the friction stir tool in the direction of the rotation axis, and the rotational axis direction for embedding the friction stir tool It is preferable to include a load mechanism for applying a load to the belt plate and a rotation shaft position changing drive mechanism for the friction stir tool so that the position of the rotation shaft of the friction stir tool can be changed in the longitudinal direction and / or the width direction of the strip. Here, the drive mechanism that moves the friction stir tool in the direction of the rotation axis means that the probe at the tip of the friction stir tool is kept away from the strip when the device starts up, and the friction stir tool reaches a certain number of rotations. At this point, the probe is embedded by moving the friction stir tool toward the strip.

  The tool rotation axis position is adjusted back and forth in the longitudinal direction of the strip because the position of the rotation axis of the friction stirrer tool is moved relative to the curved surface of the backing, depending on the bonding material. This is because the angle (θ) formed by the rotation axis of the stirring tool and the tangent plane of the surface of the strip at the position where it is embedded can be adjusted so that a suitable joining quality can be obtained.

  Adjusting and changing the position of the axis of rotation of the friction stir tool back and forth in the width direction of the strip depends on the combination of the width and material of the material used for bonding, This is because an appropriate offset amount can be adjusted by this, so that a suitable joining quality can be obtained.

  Next, by using the above-described continuous friction stir welding apparatus 300, first, a strip-shaped joined body of two strips is manufactured, and then a third strip is joined to the strip, thereby forming a three-long strip-shaped joined body. A method of manufacturing the will be described. In addition, a part of the part which overlaps with the said embodiment is abbreviate | omitted.

  The strip 1 is fed out from the uncoiler 4, the strip 2 is fed out from the uncoiler 5, the strip 2A is fed out from the uncoiler 5A, the side surfaces of the fed strip 1 and the strip 2 are butted together, After being along the lower surface of the outer peripheral surface 91 of the tension adjusting roller 9, the surface is aligned on the curved side surface portion 715 of the rotating drum body 712 of the rotating drum 71 shown in FIG. 10, the belt plate 2A fed out from the uncoiler 5A is brought into contact with the side surfaces, and the three butted strips are placed along the lower surface of the outer peripheral surface 91A of the tension adjusting roller 9A. Next, the band plate in which the three band plates are abutted is placed on the curved side surface portion of the rotating drum body of the rotating drum 71A, and then on the lower surface of the outer peripheral surface 101A of the tension adjusting roller 10A. After being aligned, the recoiler 8A is made to wind up.

The positions of the rotary shafts of the rotary drum 71 and the rotary drum 71A are finely adjusted back and forth so that the angle formed by the rotary shaft of the friction stir tool and the tangent plane of the belt plate becomes an obtuse angle with an appropriate value.
The temperatures of the rotating drum 71 and the rotating drum 71A are set.

  Next, the spring 730 presses the pressing plate 740 by tightening the nut 732 of the bolt 731 passing through the inside of the rotating drum main body 712, thereby rotating the movable rib 750 adjacent to the pressing plate 740. It is pressed against the drum main body 712 side and presses one side surface opposite to the butting surface of the butted band plate present on the rotating drum main body 712. Since the rib 720 is present on the other side opposite to the butting surface of the butted band plate present on the rotating drum body 712, the butted band plate existing on the rotating drum body 712 is the rib 720. And the butted surfaces are tightly adhered to each other.

  Also in the rotating drum 7A, as in the case of the rotating drum 7, the butting surfaces of the three butted strips present on the rotating drum main body are firmly adhered.

  In this state, the tension adjustment roller 9, the tension adjustment roller 10, the tension adjustment roller 9A, and the position (height) of the tension adjustment roller 10A are adjusted so that sufficient tension is applied to the three strips that have been abutted. .

  The rotational axis positions of the friction stir tool 61 and the friction stir tool 61A are finely adjusted and fixed in the width direction of the strip so that the position of the strip plate with respect to the butting portion is on the butting portion or an appropriate offset amount.

Next, the friction stir tool 61 of the friction stir welding apparatus 6 is rotated. When the friction stir tool 61 reaches a certain number of revolutions, the friction stir tool 61 is moved in the direction of the band plate so that the probe is embedded at or near the butted portion of the band plate, and the portion where the probe is embedded and Plasticize under the shoulder surface.
At the same time, the friction stir tool 61A of the friction stir welding apparatus 6A is rotated. When the friction stir tool 61A reaches a certain number of rotations, the friction stir tool 61A is moved in the direction of the strip, and the probe is embedded at or near the butted portion of the strip, and the portion where the probe is embedded and Plasticize under the shoulder surface.

  When plasticization necessary for friction stir welding is performed by the friction stir welding apparatus 6 and the friction stir welding apparatus 6A, the motor part 82A of the recoiler 8A including the motor part 82A, the rotating shaft 81A, and the winding tension adjusting mechanism is moved. Then, the rotating shaft 81A is rotated and the butted strip is wound around the recoiler 8A. Simultaneously with the operation of the motor unit 82A of the recoiler 8A, the motor 42 of the uncoiler 4, the motor 52 of the uncoiler 5 and the motor 52A of the uncoiler 5A are also operated so that the belt plate is fed out. A joined body 3 of the strip 1 and the strip 2 is obtained by the friction stir welding apparatus 6, and the joined body 3A in which the strip 2A is joined to the joined body 3 is wound around the recoiler 8A.

As described above, the joined body of the three strips could be produced satisfactorily with good joining quality, no distortion due to deformation, and the specific production conditions were as follows. It was.
Band plate 1: The material is copper-based C1020. The width is 37 mm. The length is 100m. Thickness is 2.0mm.
Strip 2: material is manganin. The width is 10mm. The length is 100m. Thickness is 2.0mm.
Band plate 2A: The material is copper-based C1020. The width is 37 mm. The length is 100m. Thickness is 2.0mm.
The diameter of the rotating drum 71 and the rotating drum 71A is 500 mm. The length of the belt plate in contact with the rotating drum 71 and the rotating drum 71A is about 500 mm.
The tension is 1 kg weight / mm ² .
The moving speed of the strip is 100 mm / min.
The material of the friction stir tools 61 and 61A is a Ni-based 2-duplex intermetallic compound alloy.
The angle θ between the rotating shaft 62 of the friction stir tool 61 and the tangent plane of the strip where the probe is embedded in the strip is 94 °.
The distance S between the straight line R and the rotating shaft 62 of the friction stir tool 61 is 17 mm.
The angle θ formed by the rotating shaft 62A of the friction stir tool body 611A and the tangent plane of the strip where the probe is embedded in the strip is 94 °.
The distance S between the straight line R and the rotating shaft 62A of the friction stir tool body 611A is 17 mm.
The rotational speed of the friction stir tools 61 and 61A is 800 rpm to 1200 rpm.
The load of the friction stir tools 61 and 61A is about 500 kg.
The temperature of the rotating drum 71 and the rotating drum 71A is 50 ° C.

  A third embodiment of the present invention will be described below with reference to FIG. This embodiment is intended to manufacture a long joined body by joining three long strips using the continuous friction stir welding apparatus 400 according to the present invention. In that case, joining is performed at two places simultaneously using three strips to produce a joined body.

  FIG. 9 is a schematic perspective view showing a joining operation using the continuous friction stir welding apparatus 400.

The continuous friction stir welding apparatus 400 includes an uncoiler (not shown) that feeds the wound first metal strip 1B, and another uncoiler that feeds the wound second metal strip 2B ( (Not shown), another uncoiler (not shown) for feeding the wound third metal strip 3B, and tension for adjusting the tension of the strip 1B, the strip 2B and the strip 3B The adjustment roller 9B, a friction stir welding apparatus (not shown) for friction stir welding by embedding the friction stir tool body 611B in the surface where the side surfaces of the drawn strip 1B and the strip 2B are abutted with each other and the pulled out The friction stir welding apparatus (not shown) for embedding the friction stir tool main body 621B in the surface where the side surfaces of the strip 2B and the strip 3B are abutted with each other and friction stir welding, and the tool main bodies 611B and 621B Against strip A backing 7B for supporting the pressure from the back side of the strip, a tension adjusting roller 10B for adjusting the tension of the joined body 123B which is a joined strip in which the side surfaces of the strip are butted against each other by friction stir welding, and the joining And a recoiler (not shown) that winds up the body 123B.
Continuous friction stir welding apparatus 400 includes a plane formed by the side surface of the band plate 1B wound around the uncoiler and a side surface formed by the other side of the band plate 2B wound by another uncoiler. Form the same plane, and the rotation axis of both uncoilers, the rotation axis of the recoiler, the rotation axis 93B of the tension adjusting roller 9B, and the rotation axis 103B of the tension adjusting roller 10B all intersect perpendicularly with the same plane. The rotation axis of the tool body 611B is on the same plane when the joint is on the abutting surface, that is, when the tool offset is 0, the rotation axis of the tool body 611B is also on the same plane. In addition, there is a plane including the side surface of the band plate 1B and the butting surface P2 of the side surface of the band plate 2B to be butted against the side surface.
Further, the plane formed by the side surface of the band plate 2B wound up by the uncoiler and the plane formed by the side surface of the band plate 3B wound up by another uncoiler form the same plane. The rotating shafts of both uncoilers, the rotating shaft of the recoiler, the rotating shaft 93B of the tension adjusting roller 9B, and the rotating shaft 103B of the tension adjusting roller 10B all intersect perpendicularly with the same plane. The rotation axis of the tool body 621B is on the same plane when the joint is on the abutting surface, that is, when the tool offset is 0, the rotation axis of the tool body 621B is also on the same plane. In addition, there is a plane including the side face of the strip 2B and the abutting surface P3 of the side face of the strip 3B to be abutted against the side face.

  The structure, function, preferred mode, etc. of the three uncoilers, the tension adjusting roller 9B, the tension adjusting roller 10B, the two friction stir welding devices, the backing 7B, and the recoiler constituting the continuous friction stir welding device 400 are continuous friction. This is the same as that described in the stir welding apparatus 200 or the continuous friction stir welding apparatus 300, and the description thereof is omitted.

  The rotation shaft 93B of the tension adjustment roller 9B and the rotation shaft 103B of the tension adjustment roller 10B intersect perpendicularly with respect to the plane having the rotation axis of the friction stir tool body 611B and the plane having the rotation axis of the friction stir tool body 621B. ing.

In the continuous friction stir welding apparatus 400 described above, only one tension adjusting roller wider than the total width of the three strips to be joined is used as the tension adjusting roller 9B. A tension adjusting roller may be used for each individual band plate to be joined, or one tension adjusting roller is used for two of the three band plates to be joined, and the rest Another tension adjusting roller may be used for the band plate, but it is preferable to use one common roller because the band plate can be reasonably aligned with the rotating drum.
In order to apply tension to the strip with the common tension adjusting roller, it is necessary to change the position (height) of the three uncoilers as appropriate and consider whether the strip passes through the lower or upper surface of the tension adjusting roller. There is.

  In the continuous friction stir welding apparatus 400, the rotating drum 71B is used as the backing 7B.

  In the continuous friction stir welding apparatus 400 of the present invention, as in the continuous friction stir welding apparatus 200 and the continuous friction stir welding apparatus 300, at least the side surfaces of the strip 1B, the strip 2B, and the strip 3B are abutted, It is preferable to have a mechanism that applies a pressing force to the abutting surface from either or both of the side surface 1B1 that is not the butting surface of the band plate 1B and the side surface 3B1 that is not the butting surface of the band plate 3B. Examples of the width direction restraint device that prevents the expansion in the width direction include ribs, movable ribs, grooves formed on the backing, etc., as in the continuous friction stir welding apparatus 200 or 300. In this case, one having ribs 720B and 721B attached to both side surfaces of the rotating drum 71B was used. The interval between the ribs 720B and 721B is fixed to the total width of the band plate 1B, the band plate 2B, and the band plate 3B whose side surfaces are abutted.

  In the continuous friction stir welding apparatus 400 of the present invention, when a rotating drum is used as a backing, the rotating shaft of the friction stirring tool body 611B and the rotating shaft of the friction stirring tool body 621B are more than the rotating shaft 711B of the rotating drum. Since it is preferable to be closer to the uncoiler, the position is set as such. The reason is as described in the description of the continuous friction stir welding apparatus 200 and the continuous friction stir welding apparatus 300.

In the continuous friction stir welding apparatus 400 of the present invention, the friction stir tool, the drive mechanism for rotating the friction stir tool, the drive mechanism for moving the friction stir tool in the direction of the rotation axis, and the rotational axis direction for embedding the friction stir tool And a rotation shaft position changing drive mechanism for the friction stir tool so that the position of the rotation shaft of the friction stir tool can be changed in the longitudinal direction and / or the width direction of the band plate.
Here, the drive mechanism that moves the friction stir tool in the direction of the rotation axis means that the probe at the tip of the friction stir tool is kept away from the strip when the device starts up, and the friction stir tool reaches a certain number of rotations. At this point, the probe is embedded by moving the friction stir tool toward the strip.

  Adjusting and changing the rotational axis position of the friction stirrer tool back and forth in the length direction of the strip is because the rotational axis position of the friction stirrer tool is moved relative to the curved surface of the backing by the bonding material. This is because the angle (θ) formed by the rotating shaft of the friction stir tool and the tangent plane of the surface of the band plate at the embedded position can be adjusted so that a suitable joining quality can be obtained.

  Adjusting and changing the position of the axis of rotation of the friction stir tool back and forth in the width direction of the strip depends on the combination of the width and material of the material used for bonding, This is because an appropriate offset amount can be adjusted by this, so that a suitable joining quality can be obtained.

  Next, a method for manufacturing a three-long long joined body by simultaneously joining two places using three strips using the continuous friction stir welding apparatus 400 will be described.

  From each of the three uncoilers (not shown), the strip 1B, the strip 2B, and the strip 3B are unrolled, the side surfaces of the unrolled strip 1B and the strip 2B are butted together, and the other strips 2B The side surface of the band plate 3B is abutted against the side surface. After the three strips are butted together along the lower surface of the outer peripheral surface of the tension adjusting roller 9B, the curved drum surface of the rotating drum 71B shown in FIG. Further, along the lower surface of the outer peripheral surface of the tension adjusting roller 10B, the recoiler (not shown) is wound.

The position of the rotating shaft of the rotating drum 71B is finely adjusted back and forth so that the angle formed by the friction stirring tool rotating shaft and the tangent plane of the strip plate becomes an obtuse angle with an appropriate value.
The heater and chiller were operated so that the temperature of the rotating drum could be maintained at a constant temperature.

  In the rotating drum 71B, ribs 720B and 721B are attached to both side surfaces of the rotating drum 71B as a mechanism for applying a pressing force to the abutted band plates, and the side surfaces of the ribs 720B and 721B are abutted against each other. Since the total width of the band plate 1B, the band plate 2B, and the band plate 3B is set, the abutting surfaces of the abutted band plates existing on the rotating drum main body are firmly adhered.

  In this state, the positions (heights) of the tension adjusting roller 9B and the tension adjusting roller 10B are adjusted so that sufficient tension is applied to the three strips that are abutted.

  The rotational axes of the friction stir tool main body 611B and the friction stir tool main body 621B are finely adjusted and fixed in the width direction of the band plate so that the position of the band plate with respect to the butting portion is on the butting portion or an appropriate offset amount.

  Next, the friction stir tool body 611B and the friction stir tool body 621B of the two friction stir welding apparatuses are rotated. When the friction stir tool main body 611B and the friction stir tool main body 621B reach a certain number of rotations, the friction stir tool main body 611B and the friction stir tool main body 621B are moved in the strip direction to probe the friction stir tool main body 611B. (The probe is not visible in FIG. 9 because it is embedded at the tip of the friction stir tool body 611B and is embedded in the band plate abutting portion.) Is embedded in or near the abutting portion between the side surfaces of the band plate 1B and the band plate 2B. At the same time, the friction stir tool main body 621B is moved in the direction of the strip, and the probe of the friction stir tool main body 621B (the tip of the friction stir tool main body 621B is embedded in the band abutting portion in FIG. 9). The probe is not visible) and is embedded in the butt portion between the side surfaces of the band plate 2B and the band plate 3B or in the vicinity thereof, and the portion in which both probes are embedded And the lower shoulder surface to plasticize.

  In each friction stir welding apparatus, when plasticization necessary for friction stir welding is performed, the motor unit of a recoiler (not shown) composed of a motor unit, a rotating shaft, and a winding tension adjusting mechanism is moved, and the rotating shaft is moved. Rotate and roll up the three strips butted on a recoiler (not shown). Further, simultaneously with the operation of the motor unit of the recoiler, the three decoilers are also operated to feed out the strip. The joined body 123B in which the strip 1B, the strip 2B, and the strip 3B are joined by the friction stir welding apparatus is wound around a recoiler (not shown).

As described above, the joined body of the three strips could be manufactured continuously and continuously with good bonding quality, no distortion due to deformation, and specific manufacturing conditions are as follows. there were.
Strip 1B: The material is copper-based C1020. The width is 37 mm. The length is 100m. Thickness is 2.0mm.
Strip 2B: Material is manganin. The width is 10mm. The length is 100m. Thickness is 2.0mm. Band plate 3B: The material is copper-based C1020. The width is 37 mm. The length is 100m. Thickness is 2.0mm.
The diameter of the rotating drum is 500 mm. The length of the strips 1B, 2B, 3B in contact with the rotating drum is about 500 mm.
The tension is 1 kg weight / mm ² .
The moving speed of the strips 1B, 2B, 3B is 100 mm / min.
The material of the friction stir tool bodies 611B and 621B is a Ni-based two-phase intermetallic compound alloy.
The angle θ between the rotation axis of the friction stir tool body 611B and the tangent plane of the strip where the probe is embedded in the strip is 94 °.
The distance S between the straight line R and the rotation axis of the friction stir tool body 611B is 17 mm.
The angle θ formed by the rotational axis of the friction stir tool body 621B and the tangent plane of the strip where the probe is embedded in the strip is 94 °.
The distance S between the straight line R and the rotating shaft of the friction stir tool body 621B is 17 mm.
The rotational speed of the friction stir tool main bodies 611B and 621B is 800 rpm to 1200 rpm.
The load of each friction stir tool is about 500 kg.
Rotating drum temperature is 50 ° C

  According to the present invention, even when a thin plate is thin, joining is not difficult, the joining quality is high, deformation hardly occurs during joining, and it is not necessary to use a protector. Manufacturing method and manufacturing apparatus for producing a joining strip by butt friction stir welding in the direction, and in particular, a long joining strip is produced by continuously butting friction stir welding of strips of different materials in the width direction. Since a manufacturing method and a manufacturing apparatus are provided, it is particularly suitable for joining dissimilar materials, and a low-resistance metal fixed resistor whose demand will further increase in the future can be manufactured stably and inexpensively with high quality.

200 Continuous friction stir welding apparatus 1 Band plate 11 One side surface of band plate 1 12 Other side surface 2 of band plate 1 Band plate 21 One side surface of band plate 2 Other side surface 2 of band plate 2 Bonded body 4 Uncoiler 41 (Uncoiler's) rotating shaft 42 Motor part 43 Feeding part 5 Uncoiler 51 (Uncoiler's) rotating shaft 52 Motor part 53 Feeding part 6 Friction stir welding device 61 Friction stir tool 611 Friction stir tool main body 612 Probe 613 Shoulder 62 Rotating shaft 63 Gap 7 Backing 71 Rotating drum 711 Rotating shaft 712 Rotating drum main body 713 Drum bearing 714 Drum bearing base 715 Side surface portion 716 (of the curved surface of the rotating drum) End portion 720 (of the side surface portion) Rib 730 Spring 731 Bolt 732 Nut 740 Pressing plate 750 Movable rib 8 Recoiler 81 (Recoiler ) Rotating shaft 82 Motor part 83 Winding part P Abutting surface 9 Tension adjusting roller 91 (outside of tension adjusting roller) outer peripheral surface 92 (outside surface) lowest part 93 Rotating shaft 10 Tension adjusting roller 101 (outside of tension adjusting roller) Surface 102 (outer peripheral surface) lowest part 103 rotation axis F plane H tangential plane O center of rotation shaft 711 T apex of rotation drum R straight line S distance between straight line R and rotation axis of friction stir tool main body 300 continuous friction stir welding apparatus 2A Band plate 3A Joined body 5A Uncoiler 51A Rotating shaft 52A Motor part 53A Feeding part 6A Friction stir welding device 61A Friction stirring tool 611A Friction stirring tool body 612A Probe 62A Rotating shaft 7A Backing 71A Rotating drum 711A Rotating shaft 8A Recoiler 8A Rotating shaft 82A Motor part 83 Winding portion P1 Abutting surface of the side surface of the joined body 3 and the side surface of the band plate 2A butted against the side surface 9A Tension adjusting roller 91A (Tension adjusting roller) outer peripheral surface 92A (outer peripheral surface) lowest portion 93A Rotating shaft 10A Tension adjustment roller 101A (Tension adjustment roller) outer peripheral surface 102A (outer peripheral surface) lowest part 103A Rotating shaft 400 Continuous friction stir welding apparatus 1B, 2B, 3B Band plate 1B1 Side surface which is not a butting surface of band plate 1B 3B1 Band plate 3B 9B Tension adjusting roller 93B Rotating shaft 10B Tension adjusting roller 103B Rotating shaft 611B Friction stir tool main body 621B Friction stir tool main body 71B Rotating drum 720B, 721B Rib 7B Backing 123B Joined member P2 Side surface of strip 1B, Abutting surface with side surface of strip 2B P3 Side surface of strip 2B Abutting surfaces of the side surface of the strip 3B

Claims (19)

A method of manufacturing a bonded body of band plates by abutting the band plate 1 and the band plate 2 in the width direction and embedding a probe of a tool for friction stir welding,
Applying a backing having a convex curved surface to the back side of the strip 1 and the strip 2 in which the probe is embedded,
The side surface of the band plate 1 and the side surface of the band plate 2 are brought into contact with each other and tension is applied to the band plate in the longitudinal direction so that the probe is embedded along the convex curved surface of the backing. ,
In a state in which the butted band plate 1 and the band plate 2 are constrained in the width direction so that the band plate 1 and the band plate 2 with which the side surfaces are butted do not expand in the width direction due to the insertion of the probe,
A friction stir welding tool probe is embedded in or near the abutting portion, and the band plate 1 and the band plate 2 are moved relative to the probe in the longitudinal direction of the band plate to perform friction stir welding. A method for manufacturing a joined body of strips. A method of manufacturing a bonded body of band plates by abutting the band plate 1 and the band plate 2 in the width direction and embedding a probe of a tool for friction stir welding,
Applying a rotating drum to the back side of the strip 1 and the strip 2 in which the probe is embedded,
Before and after the probe is embedded by abutting the side face of the strip 1 and the side face of the strip 2
Along the curved surface of the rotating drum,
In a state in which the butted band plate 1 and the band plate 2 are constrained in the width direction so that the band plate 1 and the band plate 2 with which the side surfaces are butted do not expand in the width direction due to the insertion of the probe,
A friction stir welding tool probe is embedded in or near the abutting portion, and the band plate 1 and the band plate 2 are moved relative to the probe in the longitudinal direction of the band plate to perform friction stir welding. A method for manufacturing a joined body of strips. A width direction in which the abutted band plate 1 and the band plate 2 are attached to the backing so that the band plate 1 and the band plate 2 abutted against each other by insertion of the probe do not expand in the width direction. The method for producing a joined body of strips according to claim 1 or 2, wherein the stirrer is restrained in the width direction by a restraining tool and friction stir welding is performed. It is a method of manufacturing a strip strip joined body by butting the strip strip assembly 3 and the strip plate 4 in the width direction and embedding a probe of a friction stir welding tool.
Applying a backing having a convex curved surface to the back side of the band plate assembly 3 and the band plate 4 in which the probe is embedded,
Along the convex curved surface of the backing, before and after the probe is embedded by abutting the side surface of the bonded body 3 of the belt plate and the side surface of the belt plate 4,
A state in which the bonded strip 3 and the strip 4 are constrained in the width direction so that the strip 3 and the strip 4 with which the side surfaces are butted do not expand in the width direction due to the insertion of the probe. so,
A probe of a tool for friction stir welding is embedded in or in the vicinity of the butted portion between the butted band plate assembly 3 and the band plate 4, and the band plate union 3 and the band plate relative to the probe. A method for manufacturing a joined body of three strips that moves the strip 4 in the longitudinal direction of the strip and performs friction stir welding. A method of manufacturing a joined body of three or more strips at a time by butting three or more strips in the width direction of each strip and embedding a probe of a tool for friction stir welding. ,
Applying a backing having a convex curved surface on the back side of all the strips in which the probe is embedded,
Along the convex curved surface of the backing, before and after the probe is embedded by abutting the side and side surfaces of the strips,
In a state where the abutted band plates are constrained in the width direction so that the entire width of the abutted band plates does not expand in the width direction due to the insertion of the probe,
A probe for a friction stir welding tool is embedded in or near each butting portion between the band plate and the band plate, and the band plate is moved in the longitudinal direction of the band plate relative to the probe to thereby friction stir. A method for producing a joined body of three or more strips to be joined. 6. The manufacture of a joined strip of strips according to claim 1, wherein an angle formed between the rotating shaft of the friction stir tool and the tangent plane of the strip where the probe is embedded in the strip is obtuse. Method. It is a joining apparatus that abuts the strip and performs friction stir welding,
An uncoiler 1 for unwinding the wound strip 1 and an uncoiler 2 for unwinding the wound strip 2;
A friction stirrer that abuts the side surfaces of both of the fed strips, embeds a probe of a friction stir tool in the abutting part or in the vicinity thereof, and stirs and joins by rotation,
A backing having a convex curved surface for supporting pressing against the strip by the tool from the back side of the strip;
In the longitudinal direction of the band plate, the side surface of the band plate 1 and the side surface of the band plate 2 are faced to follow the convex curved surface of the backing before and after the probe is embedded. A tension applying device for applying tension;
A width direction restraint tool for restraining the abutted band plate 1 and the band thin plate 2 in the width direction so that the band plate 1 and the band plate 2 abutted against each other do not expand in the width direction due to the insertion of the probe. When,
A moving device for moving the band plate relatively abutted against the friction stir tool in the longitudinal direction of the band plate;
A friction stir welding apparatus for strips having   The apparatus for friction stir welding of a strip according to claim 7, wherein the backing having a convex curved surface is a rotating drum. The width direction restraint tool is attached to the said back so that the band plate which the band plate 1 and the band plate 2 with which side surfaces were faced | matched by the insertion of a probe does not spread in the width direction. Or a friction stir welding apparatus for strips according to 8. The rib in the width direction has one rib standing in a direction perpendicular to the rotation axis of the rotating drum and another rib standing in a direction perpendicular to the rotation axis of the rotating drum with the butted band plate interposed therebetween. 10. The friction stir welding of the strip according to claim 9, wherein the butted strip is a restraining tool that restrains the distance between the ribs so as not to expand in the width direction due to the insertion of the probe. apparatus. A plane formed by a side surface of the band plate 1 wound around the uncoiler 1 on the side to be abutted;
The plane formed by the side surface of the band plate 2 wound around the uncoiler 2 is the same plane, and the rotation axis of the uncoiler 1 and the rotation axis of the uncoiler 2 are perpendicular to the same plane. The apparatus for friction stir welding of strips according to any one of claims 7 to 10, characterized in that they intersect. A recoiler or a pinch roller for winding the band plate butt-joined to the downstream side of the backing plate from the backing is provided. The recoiler or the pinch roller has the strip plate in the downstream direction while applying tension to the strip plate. 12. A mechanism for moving the head to the head is provided.
The apparatus for friction stir welding of strips according to any one of the above. Between the unwinding portion of the uncoiler strip and the portion where the strip is in contact with the backing, the unrolled strip is closer to the unwinding portion of the uncoiler than the embedded portion of the tool. A tension adjusting roller is provided to follow the backing. The tension adjusting roller applies a pressing force to the strips 1 and 2 in a direction approaching the backing, and the strip 1 is applied to the rotating drum. 2, the friction stir welding apparatus for a strip according to claim 8. The friction stir welding apparatus includes a friction stir tool, a drive mechanism that rotates the friction stir tool, a drive mechanism that moves the friction stir tool in the rotation axis direction, and a load mechanism that applies a load in the rotation axis direction to embed the friction stir tool And a rotation shaft position changing drive mechanism for the friction stir tool so that the position of the rotation shaft of the friction stir tool can be changed in the longitudinal direction and / or the width direction of the belt plate. The apparatus for friction stir welding of strips according to any one of the above. 15. The friction stir welding of a band plate according to claim 8, wherein the rotary drum has a position adjusting mechanism so that the position of the rotation shaft can be changed in the longitudinal direction of the band plate. apparatus. 16. The friction stir welding apparatus for a strip according to claim 8, wherein the tool rotation shaft is closer to an uncoiler than the rotation shaft of the rotating drum. The friction stir welding apparatus for a strip according to any one of claims 7 to 16, wherein the friction stir welding section and / or the backing are provided with a temperature adjusting mechanism for maintaining a constant temperature during the friction stir welding. On the downstream side of the recoiler or the pinch roller, a punching mechanism for punching the bonded strip, a cutting machine for cutting, a cutting mechanism for cutting, a polishing mechanism for polishing, a rolling mechanism for rolling, or a pressing mechanism for pressing are attached. The friction stir welding apparatus for a strip according to claim 12. The continuous friction stir welding apparatus for a strip according to any one of claims 7 to 18, wherein the friction stir tool is made of a Ni-based compound alloy.

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