CN117145587A - Titanium alloy discontinuous reinforced structure hollow support plate and superplastic diffusion connection die thereof - Google Patents
Titanium alloy discontinuous reinforced structure hollow support plate and superplastic diffusion connection die thereof Download PDFInfo
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- CN117145587A CN117145587A CN202311038994.1A CN202311038994A CN117145587A CN 117145587 A CN117145587 A CN 117145587A CN 202311038994 A CN202311038994 A CN 202311038994A CN 117145587 A CN117145587 A CN 117145587A
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- 238000009792 diffusion process Methods 0.000 title claims abstract description 49
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 63
- 238000000465 moulding Methods 0.000 claims abstract description 49
- 238000009826 distribution Methods 0.000 claims abstract description 7
- 230000002787 reinforcement Effects 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 22
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 12
- 238000013461 design Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 239000010410 layer Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 8
- 229910052786 argon Inorganic materials 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a titanium alloy discontinuous reinforced structure hollow support plate and a superplastic diffusion connection die thereof, comprising a lower die, an upper die, a core die, a supporting upper block and a supporting lower block, wherein the upper surface of the lower die is provided with a first molding surface for molding the outer molding surface of a part of the hollow support plate; the lower surface of the upper die is provided with a second molding surface for molding the outer molding surface of the hollow support plate part, the outline of the core die is consistent with the inner outline of the support plate wall, and the core die is provided with a positioning groove for installing a reinforcing rib; the upper supporting molding block is detachably connected to the second molding surface of the upper die, the upper supporting molding block comprises upper supporting protrusions with the same number and the same distribution positions as those of the reinforcing ribs, the lower supporting molding block is detachably connected to the first molding surface of the lower die, and the lower supporting block comprises lower supporting protrusions with the same number and the same distribution positions as those of the reinforcing ribs. According to the invention, the functions of diffusion welding and superplastic connection are integrated on one set of die, so that the problem of forming the hollow support plate with the discontinuous reinforcing structure is effectively solved with high quality.
Description
Technical Field
The invention belongs to the technical field of mechanical design, and particularly relates to a structural design of a superplastic diffusion connection die of a titanium alloy hollow support plate with a discontinuous reinforcing structure.
Background
The hollow support plate (shown in figure 1) with the discontinuous reinforcing rib structure is a titanium alloy closed thin-wall component part for connecting the inner ring and the outer ring of the split flow on the aeroengine, as shown in the left diagram of figure 1, two reinforcing ribs (the positions of broken lines in figure 1) are arranged in a closed cavity of the hollow support plate, the two reinforcing ribs are discontinuous, and two ends of each reinforcing rib do not completely extend to two ends of the hollow support plate, but a length is omitted. The hollow support plate adopts a processing method of superplastic forming diffusion connection.
According to the technological characteristics of the support plate combined structure, a superplastic diffusion connection die capable of extruding plates, sealing and controlling profile outline dimensions is required to be designed, and the superplastic diffusion connection die has diffusion welding and superplastic connection functions.
The superplastic diffusion connection is a processing method under the conditions of high temperature, vacuum, inflation and the like, the designed die is required to bear high temperature and high pressure, the sealing performance is good, the working is reliable and stable, so the structural design of the die is also required to ensure the positioning of the support plate parts, the supporting of the reinforcing ribs and the compaction control of the wall surfaces of the support plates, so as to realize the vacuum sealing requirement of diffusion connection parts, and ensure the diffusion connection quality of the parts and the requirements of the dimension and the profile of molded surfaces after superplastic forming.
The conventional hollow support plate is of a three-layer or four-layer plate structure, so that the superplastic diffusion connection structure comprises a three-layer structure and a four-layer structure, and is a combination of the plates in a continuous state, the superplastic and diffusion connection mold is easy to design, and the diffusion connection is realized by coating solder resist in a planar state of a plurality of layers of plates usually through air pressure or planar compaction without considering excessive structures. The superplastic forming is to make the wall surface attach to the surface of the mould to obtain the appearance surface of the part by introducing argon gas between different layers in different time periods, and the superplastic forming of the internal reinforcing ribs is to form the required position and shape by moving the wall surface of the plate. In comparison, the hollow support plate with the discontinuous reinforcing rib structure in fig. 1 is a single-layer plate structure, the support plate wall (fig. 4) and the reinforcing ribs (fig. 5) are respectively and independently formed, then diffusion welding is carried out to enable the support plate wall and the reinforcing ribs to be connected into a whole, and finally precise forming of the surface size of the support plate wall is achieved through superplastic connection.
However, as shown in the left diagram of fig. 1, the two end heads of the discontinuous reinforcing rib are in a partial shape, only one section of profile is needed, the air pressure diffusion welding with integral sealing performance cannot be realized, the diffusion welding process is realized by adopting rigid pressing, and the mold also needs to meet the sealing and air pressure forming process state of superplastic forming, so that the mold with the high-temperature resistant combined structure needs to be designed, and can meet the diffusion connection in the high-temperature state.
Disclosure of Invention
The invention aims to provide a titanium alloy hollow support plate with a discontinuous reinforcing structure and a superplastic diffusion connection die thereof, which realize the die structure design of superplastic forming and diffusion connection at high temperature in multiple working procedures, can meet the fixed extrusion of a cambered surface structure, has simple structure, convenient operation, stability and reliability, and good quality of the superplastic forming diffusion connection piece, and effectively solves the processing problem of the hollow support plate with the discontinuous reinforcing structure.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a hollow support plate with a thin-wall titanium alloy discontinuous reinforced structure comprises,
the support plate wall is formed by butt joint of two ends of a titanium alloy sheet after being bent and folded, a support plate cavity with a closed circumference and two open ends is formed inside the closed support plate wall, and the shape of the support plate wall comprises a front edge arc section, a middle smooth transition section and a tail edge leaf-shaped flow line section;
the reinforcing ribs are at least two, the reinforcing ribs are distributed at intervals in the supporting plate cavity to form a discontinuous reinforcing structure, two ends of the width direction of the reinforcing ribs are respectively connected with the inner surface of the supporting plate wall, two ends of the length direction of the reinforcing ribs are not contacted with two open ends of the supporting plate cavity, two ends of the height direction of the reinforcing ribs are not contacted with the tail ends of the front edge circular arc section and the tail edge leaf-shaped flow line section of the supporting plate wall, and the reinforcing ribs are made of titanium alloy.
Alternatively, the reinforcing ribs are of a groove-shaped structure, and two sides of the groove-shaped structure are connected with the inner surface of the support plate wall.
Alternatively, the number of the reinforcing ribs is two, and the two reinforcing ribs are respectively arranged at the junction of the front edge circular arc section and the middle smooth transition section and the junction of the middle smooth transition section and the tail edge blade-shaped flow line section.
A superplastic diffusion connection die for a titanium alloy hollow support plate with a discontinuous reinforcing structure comprises,
the upper surface of the lower die is provided with a first molding surface for molding the outer molding surface of the hollow support plate part;
the lower surface of the upper die is provided with a second molding surface for molding the outer molding surface of the part of the hollow support plate, and the second molding surface and the first molding surface form a complete outer molding surface of the hollow support plate;
the outline of the core mold is consistent with the inner outline of the support plate wall, and a positioning groove for installing the reinforcing rib is formed in the core mold;
the upper supporting block is detachably connected to the second molding surface of the upper die and comprises upper supporting protrusions with the same number and the same distribution positions as the reinforcing ribs, and the surface shape of the tail ends of the upper supporting protrusions is the same as the outer molding surface of the support plate wall at the connection positions of the reinforcing ribs and the support plate wall;
the lower supporting block is detachably connected to the first molding surface of the lower mold, and comprises lower supporting protrusions with the same number and the same distribution positions as the reinforcing ribs, and the surface shape of the tail ends of the lower supporting protrusions is the same as the outer molding surface of the support plate wall at the connection positions of the reinforcing ribs and the support plate wall.
Further, at least one of the lower die and the upper die has a vent groove formed in a surface thereof.
Alternatively, the first molding surface and the second molding surface respectively correspond to two exterior surfaces of the titanium alloy discontinuous reinforced structure hollow support plate which are divided along the middle bisector surface.
Alternatively, the upper surface of the lower die is flat except for the first molding surface, and the lower surface of the upper die is flat except for the second molding surface.
Alternatively, the upper support die block is detachably connected to the upper die by a bolt, and the bolting position is located in the non-second molding surface area, and the lower support die block is detachably connected to the lower die by a bolt, and the bolting position is located in the non-first molding surface area.
Alternatively, the lower die, the upper die, the core die, the upper supporting die block and the lower supporting die block are all made of high-temperature resistant stainless steel.
Alternatively, the parting surface of the arc section of the front edge of the corresponding support plate wall of the lower die and the upper die is a sharp edge; the lower die and the upper die are vertical wall surfaces at the positions corresponding to the openings at the two ends of the support plate wall.
The existing hollow support plate processing is to divide the hollow support plate into single petals along a bisecting plane, processing the hollow support plate by adopting a thermoforming mode, wherein a die is of a profiling structure with an upward convex shape and a downward concave shape, the molded surface of a part is serious in rebound after forming, multiple times of correction are needed, then the two petals and the middle reinforcing rib are combined and welded by adopting argon arc welding, the welded support plate wall surface is deformed and cannot be corrected, the deformation of the support plate is serious, the welding seam quality of the welding of a casing is influenced, and the deformation of the casing is serious. The other thinking is to superplastic forming of three or four layers of plates, but in this way, on one hand, the connection part of the multi-layer structure is easy to dent due to superplastic forming, and on the other hand, the weight of the support plate is increased.
The superplastic diffusion connection die designed by the invention realizes the diffusion connection and superplastic forming functions of the hollow support plate on one set of die, and can be switched between two processing modes only by simply disassembling the supporting blocks. The center of the die is provided with an arc split supporting block (a lower supporting block and an upper supporting block) and a core die, the core die is arranged in the support plate, the arc surface of the core die is consistent with the corresponding position of the inner surface of the support plate, and positioning grooves are distributed in the middle of the core die according to the positions of the reinforcing ribs, so that the accurate positioning of different reinforcing ribs is ensured, the diffusion welding supporting is realized, and the accurate positioning of the reinforcing ribs is ensured.
The mold provided by the invention can accurately position the reinforcing ribs and the support plate wall during diffusion welding, ensure that the reinforcing ribs can be correctly connected under the condition of discontinuous distribution, and have good mold tightness.
The mold adopts air pressure forming in the aspect of accurate forming, so that the convex mold extrusion is not needed, the part can be well attached to the concave molded surface of the mold, the high-precision processing requirement of the support plate is realized, the profile outline dimension is accurate, and the streamline shape is good.
Drawings
FIG. 1 is a schematic illustration of a hollow support plate with discontinuous reinforcement structure;
FIG. 2 is a diagram of a superplastic diffusion bonding die with a supporting lower die block and a supporting upper die block;
FIG. 3 is a cross-sectional view of a superplastic diffuser attachment mold with a supporting lower die block and a supporting upper die block perpendicular to the axial direction of a non-continuous reinforcing structure hollow support plate;
FIG. 4 is a preformed block diagram of a hollow support plate with a discontinuous reinforcement structure before diffusion welding;
FIG. 5 is a block diagram of a stiffener;
FIG. 6 is a view showing the structure of the lower die;
FIG. 7 is a schematic view of a support down block;
fig. 8 is a schematic diagram of a core mold structure;
FIG. 9 is a schematic view of a baffle structure;
FIG. 10 is a schematic view of a support upper profile block;
FIG. 11 is a diagram of the upper die structure;
FIG. 12 is a schematic view of a locating block;
FIG. 13 is a schematic view of the connection of the strut wall and the stiffener in a non-continuous reinforcement structure hollow strut;
FIG. 14 is a schematic view of a superplastic diffusion bonding die in a diffusion bonding and superplastic bonding process, respectively;
FIG. 15 is a schematic view of a vertical wall design in a superplastic diffusion bonding die;
in the figure, a lower die 1, a lower supporting die block 2, a core die 3, a baffle 4, an upper supporting die block 5, an upper die 6, a positioning block 7 and a core shaft 8.
Detailed Description
The present invention will be further described with reference to the drawings and the specific embodiments, but it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments, and various modifications, substitutions and alterations made according to the ordinary skill and familiar means of the art to which this invention pertains are included within the scope of the present invention without departing from the above technical idea of the invention.
It should be noted that, as shown in the left graph of fig. 1, discontinuous reinforcement refers to a region where two reinforcing ribs are connected to a strut wall (two sides of a reinforcing rib in fig. 5, corresponding to a dashed line region in the left graph of fig. 1) does not extend to an opening of the left end strut or an opening of the right end strut in the length direction, and does not extend to an end of a leading edge arc section (a lowermost end of a right graph strut wall in fig. 1) or an end of a trailing edge leaf streamline section (an uppermost end of a right graph strut wall in fig. 1) in the height direction, but is a local region relatively isolated from an edge profile of the strut, and such discontinuous reinforcing ribs cause difficulty in overall sealing and positioning during diffusion welding.
The processing of the non-continuous reinforced structure hollow support plate is completed under the conditions of high temperature, high pressure, vacuum, argon filling pressure and the like, so that the mold is made of a high-temperature resistant material, the change shrinkage of the profile of the part in a high-temperature state and a low-temperature state is considered, the influence of the change of the profile dimension of the part along with the temperature difference is small compared with the tolerance requirement, and the working profile of the mold can meet the requirement according to the profile design of the part.
As hollow structure, the strengthening rib needs to be connected with the extension board wall, based on the extension board wall to the position difference of strengthening rib, and the profile of junction is little camber cambered surface state, consequently need design a bearing structure that can pinpoint, guarantee the laminating of strengthening rib and extension board wall to realize the accurate extrusion of diffusion welding connection.
The mold adopts the high-temperature-resistant material stainless steel as the mold surface and the matrix material, so as to solve the control problem of the surface size brought by the aspects of oxidation, strength weakening and the like of the mold material in a high-temperature state. From the research of the welding and forming process aspects of the hollow support plate, the closed structure of the part is combined, the mold surface of the appearance of the hollow support plate adopts the parting treatment of the maximum size of the hollow support plate (the maximum size of the dot-dash line in fig. 1, 4 and 13) in consideration of the processing operability, the placement and the taking out of the parts before and after processing are convenient, as indicated by the arrow in fig. 14, the parting position of the head part (the front edge arc section) of the support plate wall on the mold is ensured to be sharp (namely, arc chamfer transition is not adopted) so as to avoid the bulge of the arc surface of the support plate wall. In order to ensure the sealing reliability in the forming process, as indicated by the arrow in fig. 15, a vertical wall surface is designed on the outer side of the opening at the two sides of the corresponding support plate wall of the mold, which is used as the support of the support plate end surface in the superplastic connecting process, and a vent pipe-shaped groove is designed at the maximum size (flat surface) of the corresponding support plate wall of the mold, which is convenient for arranging a vent pipe and ensures the sealing support requirement of the opening end surface of the support plate wall.
As shown in fig. 2, 3 and 14, the structural design of the mold considers two processing procedures of diffusion welding and superplastic connection, and in order to implement the two processing procedures on the same set of mold, it is necessary to design part of the structure as a combined structure, that is, detachable in different procedures.
And (3) designing a die structure in a superplastic connection working state:
the mould comprises an upper mould 6 (shown in figure 11) and a lower mould 1 (shown in figure 6), wherein the middle parts of the lower surface of the upper mould 6 and the upper surface of the lower mould 1 are designed with shapes consistent with the outer surface of the support plate as forming surfaces, the wall surfaces of the support plate are attached when the mould is used for superplastic forming, the shapes conforming to the forming surfaces of the support plate are obtained, the parting surfaces of the upper mould 1 and the lower mould 6 are bounded by the middle maximum size of the hollow support plate, the cavities of the upper mould 1 and the lower mould 6 meet the consistent forming surfaces within the length range of the hollow support plate, and the rest four sides are flat surfaces so as to ensure the dimensional control of the shape of the hollow support plate in a mould closing state, and grooves for conveying the shapes of the tubes of argon are respectively formed at the left side and the right side (corresponding to the two ends of the opening of the support plate wall) of the mould, so that the vent pipe is convenient to install.
And (3) designing a die structure in a diffusion welding connection state:
the diffusion welding connection needs to apply a certain pressure to the connection surface of the reinforcing rib and the support plate wall in a vacuum state, the diffusion pressure is realized by adopting the pressure of die mounting equipment (a press machine), and because the hollow support plate is of a hollow structure, a core mold 3 is designed at the hollow part of the hollow support plate in order to realize the pressure at the connection position of the support plate wall and the reinforcing rib, as shown in fig. 8, the outer surface of the core mold 3 is consistent with the outer surface of the hollow support plate, and two positioning grooves (notches extending to the right from the left side in fig. 8) are formed on the core mold 3 according to the position of the reinforcing rib in the hollow support plate and are used for mounting the reinforcing rib of the hollow support plate. On the lower surface of the upper die 6 and the upper surface of the lower die 1 of the die, a supporting block with molded surfaces on both sides is designed, namely, a supporting lower die 2 (as shown in fig. 7, the outline of a dotted line in the drawing represents the molded surfaces of the upper die 6 and the lower die 1, two raised molded surfaces below the supporting lower die 2 are attached to the molded surfaces of the lower die 1, the upper two raised surfaces are used for supporting the supporting plate wall) and a supporting upper die 5 (as shown in fig. 10, the outline of a dotted line in the drawing represents the molded surfaces of the upper die 6 and the lower die 1, the upper two raised surfaces above the supporting upper die 5 are attached to the molded surfaces of the upper die 6, the lower two raised surfaces are pressed on the supporting plate wall surface), the supporting lower die 2 and the supporting upper die 5 are respectively connected to the lower die 1 and the upper die 6 by bolts, and the bolt holes are positioned on the non-molded surface technological edges of the upper die 6 and the lower die 1.
Preparation before diffusion welding:
firstly, square titanium alloy plates are bent into a V shape or a U shape by heat, a blank similar to a support plate wall is pressed by a core mold 3 in a support plate shape (shown in figure 4), tail edge leaf-shaped streamline sections of the blank of the support plate wall are subjected to tack welding, reinforcing ribs (shown in figure 5) which are bent by the plates are arranged in positioning grooves of the core mold 3, end covers are welded at openings at two ends of the support plate wall to be blocked (at the moment, the core mold 3 is still arranged in the blank of the support plate wall), vent pipes are welded on the end covers and are arranged in a mold, at the moment, a lower mold 1 and a supporting lower mold block 2 are supported from below the blank of the support plate wall, the upper mold 6 and the supporting upper mold block 5 limit the blank of the support plate wall from above, a core shaft 8 passes through round holes in the core mold 3 and two ends of the core mold are respectively dropped into grooves of a positioning block 7 (shown in figure 12), a baffle 4 (shown in figure 9) is used for limiting the position relation of the upper mold 6 and the lower mold 1, then vacuum is pumped, the blank of the support plate wall and the mold are heated, and then pressure is applied on the mold to complete diffusion welding.
During superplastic forming connection, the lower supporting die block 2 and the upper supporting die block 5 in the die are detached from the lower die 1 and the upper die 6, the hollow support plate part subjected to diffusion welding is placed in the die again (as shown in fig. 14, the diffusion welding of the left diagram is switched to superplastic connection of the right diagram), argon is introduced through a vent pipe, the support plate wall is expanded to the molded surfaces of the upper die 6 and the lower die 1 by the argon and is attached, deformation of the part is achieved, and the final streamline shape and the outline dimension of the hollow support plate are obtained. The cut is then made in accordance with the profile of fig. 1, the cut location comprising the profile of the left and right sides of the left hand drawing of fig. 1, and the trailing edge leaf streamline section profile of the right hand drawing of fig. 1.
What is not described in detail in the description of the invention belongs to the prior art known to those skilled in the art. While the foregoing describes illustrative embodiments of the present invention to facilitate an understanding of the present invention by those skilled in the art, it should be understood that the present invention is not limited to the scope of the embodiments, but is to be construed as protected by the accompanying claims insofar as various changes are within the spirit and scope of the present invention as defined and defined by the appended claims.
Claims (10)
1. A thin-wall titanium alloy discontinuous reinforced structure hollow support plate is characterized in that: comprising the steps of (a) a step of,
the support plate wall is formed by butt joint of two ends of a titanium alloy sheet after being bent and folded, a support plate cavity with a closed circumference and two open ends is formed inside the closed support plate wall, and the shape of the support plate wall comprises a front edge arc section, a middle smooth transition section and a tail edge leaf-shaped flow line section;
the reinforcing ribs are at least two, the reinforcing ribs are distributed at intervals in the supporting plate cavity to form a discontinuous reinforcing structure, two ends of the width direction of the reinforcing ribs are respectively connected with the inner surface of the supporting plate wall, two ends of the length direction of the reinforcing ribs are not contacted with two open ends of the supporting plate cavity, two ends of the height direction of the reinforcing ribs are not contacted with the tail ends of the front edge circular arc section and the tail edge leaf-shaped flow line section of the supporting plate wall, and the reinforcing ribs are made of titanium alloy.
2. The thin-walled titanium alloy non-continuous reinforcement structure hollow support plate of claim 1, wherein: the reinforcing ribs are of a groove-shaped structure, and two side edges of the groove-shaped structure are connected with the inner surface of the support plate wall.
3. The thin-walled titanium alloy non-continuous reinforcement structure hollow support plate of claim 1, wherein: the number of the reinforcing ribs is two, and the two reinforcing ribs are respectively arranged at the junction of the front edge circular arc section and the middle smooth transition section and the junction of the middle smooth transition section and the tail edge blade-shaped flow line section.
4. A titanium alloy discontinuous reinforced structure hollow support plate superplastic diffusion connection die is characterized in that: the upper surface of the lower die (1) is provided with a first molding surface for molding the outer molding surface of the hollow support plate part;
the upper die (6), the lower surface of the upper die (6) is provided with a second molding surface for molding the outer molding surface of the part of the hollow support plate, and the second molding surface and the first molding surface form a complete outer molding surface of the hollow support plate;
the outline of the core mould (3) is consistent with the inner outline of the support plate wall, and a positioning groove for installing reinforcing ribs is formed in the core mould (3);
the upper supporting block (5) is detachably connected to the second molding surface of the upper die (6), the upper supporting block (5) comprises upper supporting bulges with the same number and the same distribution positions as the reinforcing ribs, and the surface shape of the tail end of each upper supporting bulge is the same as the outer molding surface of the support plate wall at the connection position of the reinforcing ribs and the support plate wall;
the lower supporting block (2) is detachably connected to the first molding surface of the lower die (1), the lower supporting block (2) comprises lower supporting protrusions with the same number and the same distribution positions as the reinforcing ribs, and the surface shape of the tail ends of the lower supporting protrusions is the same as the outer molding surface of the support plate wall at the connection positions of the reinforcing ribs and the support plate wall.
5. The titanium alloy discontinuous reinforcement structure hollow support plate superplastic diffusion connection die as set forth in claim 4, wherein: at least one of the surfaces of the lower die (1) and the upper die (6) is provided with a vent pipe groove.
6. The titanium alloy discontinuous reinforcement structure hollow support plate superplastic diffusion connection die as set forth in claim 4, wherein: the first molding surface and the second molding surface correspond to two outer surfaces of the titanium alloy discontinuous reinforced structure hollow support plate which are divided along the middle bisector surface respectively.
7. The titanium alloy discontinuous reinforcement structure hollow support plate superplastic diffusion connection die as set forth in claim 4, wherein: the upper surface of the lower die (1) is flat except the first molding surface, and the lower surface of the upper die (6) is flat except the second molding surface.
8. The titanium alloy discontinuous reinforcement structure hollow support plate superplastic diffusion connection die as set forth in claim 4, wherein: the upper supporting die block (5) is detachably connected to the upper die (6) through bolts, the bolt connection position is located in a non-second molding surface area, the lower supporting die block (2) is detachably connected to the lower die (1) through bolts, and the bolt connection position is located in a non-first molding surface area.
9. The titanium alloy discontinuous reinforcement structure hollow support plate superplastic diffusion connection die as set forth in claim 4, wherein: the lower die (1), the upper die (6), the core die (3), the upper supporting block (5) and the lower supporting block (2) are all made of high-temperature resistant stainless steel.
10. The titanium alloy discontinuous reinforcement structure hollow support plate superplastic diffusion connection die as set forth in claim 4, wherein:
the parting surfaces of the arc sections of the front edges of the corresponding support plate walls of the lower die (1) and the upper die (6) are sharp edges;
the openings at the two ends of the lower die (1) and the upper die (6) corresponding to the support plate wall are vertical wall surfaces.
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| CN202311038994.1A CN117145587B (en) | 2023-08-17 | 2023-08-17 | Titanium alloy discontinuous reinforced structure hollow support plate and superplastic diffusion connection die thereof |
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| CN202311038994.1A CN117145587B (en) | 2023-08-17 | 2023-08-17 | Titanium alloy discontinuous reinforced structure hollow support plate and superplastic diffusion connection die thereof |
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| CN106270095A (en) * | 2016-08-16 | 2017-01-04 | 北京航星机器制造有限公司 | A kind of band reinforcement part superplastic forming & diffusion bonding integral forming mould and method |
| CN109483183A (en) * | 2018-11-20 | 2019-03-19 | 上海交通大学 | A kind of aero-engine answers the manufacturing method on material fan blade metal reinforcement side |
| CN112238195A (en) * | 2020-10-23 | 2021-01-19 | 浙江三新科技有限公司 | Manufacturing method of wing-shaped blade for fan |
| CN114352414A (en) * | 2022-02-21 | 2022-04-15 | 中国航发沈阳发动机研究所 | Aeroengine air inlet casing structure |
| CN115741111A (en) * | 2022-11-07 | 2023-03-07 | 北京航星机器制造有限公司 | Hot-pressing superplastic integrated forming method for titanium alloy special-shaped curved surface part |
| CN116221177A (en) * | 2023-01-03 | 2023-06-06 | 中国航空制造技术研究院 | Hollow fan blade vibration reduction structure |
| CN117128057A (en) * | 2023-08-17 | 2023-11-28 | 中国航发贵州黎阳航空动力有限公司 | Hollow support plate with thin-wall titanium alloy discontinuous reinforced structure and processing method thereof |
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2023
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| CN106270095A (en) * | 2016-08-16 | 2017-01-04 | 北京航星机器制造有限公司 | A kind of band reinforcement part superplastic forming & diffusion bonding integral forming mould and method |
| CN109483183A (en) * | 2018-11-20 | 2019-03-19 | 上海交通大学 | A kind of aero-engine answers the manufacturing method on material fan blade metal reinforcement side |
| CN112238195A (en) * | 2020-10-23 | 2021-01-19 | 浙江三新科技有限公司 | Manufacturing method of wing-shaped blade for fan |
| CN114352414A (en) * | 2022-02-21 | 2022-04-15 | 中国航发沈阳发动机研究所 | Aeroengine air inlet casing structure |
| CN115741111A (en) * | 2022-11-07 | 2023-03-07 | 北京航星机器制造有限公司 | Hot-pressing superplastic integrated forming method for titanium alloy special-shaped curved surface part |
| CN116221177A (en) * | 2023-01-03 | 2023-06-06 | 中国航空制造技术研究院 | Hollow fan blade vibration reduction structure |
| CN117128057A (en) * | 2023-08-17 | 2023-11-28 | 中国航发贵州黎阳航空动力有限公司 | Hollow support plate with thin-wall titanium alloy discontinuous reinforced structure and processing method thereof |
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