KR101568612B1 - Apparatus for slowly cooling wire rod coil - Google Patents

Abstract

According to the present invention, an apparatus to slowly cool a wire rod coil comprises: a conveyor transferring the wire rod coil; and a cover means covering the wire rod coil on the conveyor, allowing a lateral part covering range for the wire rod coil to be varied to uniformly cool the wire rod coil. The lateral part covering range for the wire rod coil is varied, and the cover means is included to inject air to both sides of the wire rod coil, thus uniformly cooling the wire rod coil in accordance with a position of the wire rod coil in a width direction. Moreover, a plurality of cover means are arranged in the direction where the wire rod coil is transferred such that severity of quenching a lateral part of the wire rod coil can be adjusted to correspond to a temperature distribution of the width direction of the wire rod coil in accordance with a distance from a laying head. Moreover, the apparatus to slowly cool the wire rod coil comprises a temperature measuring means to measure a temperature distribution in the width direction of the wire rod coil such that the lateral part covering range and an amount of air injected to the lateral part of the wire rod coil can automatically be controlled.

Description

[0001] Apparatus for slowly cooling wire rod coil [0002]

The present invention relates to a wire-material coil gradual cooling apparatus, and relates to a wire-material coil gradual cooling apparatus for eliminating a cooling imbalance caused by a row density of a wire-material coil.

FIG. 1 is a schematic view showing a process of manufacturing a wire coil in general, and FIG. 2 is a plan view schematically showing a cooling band in FIG.

Generally, the wire rod is cooled in a cold water bath after rough rolling (rough rolling, intermediate rough rolling, intermediate rolling and finishing rolling), then wound (integrated) and put into a correcting line. Such a wire rod has a diameter of 5.5 to 15 mm It will produce wire rod and large diameter wire with diameter of 15 ~ 42 mm.

On the other hand, in the case of a small-diameter wire rod, if it is formed into a helical coil shape through a laying head, the heat treatment is performed in parallel with the conveying of the conveyor, then is integrated through a reforming tube, .

As shown in Figs. 1 and 2, the material rolled in the rolling mill 11 is cooled by the water-cooled bar 12 cooled by cooling water, and wound by the lifting head 13 as a winding machine. The wound wire coil 1 is continuously dropped to the conveying roller 20a of the conveyor 20 and the wound wire coil passes through the conveyor 20 while blowing air blown from the blower unit 14 It is cooled by air. Then, it is integrated into the final product in an accumulator 15 associated with the conveyor 20.

That is, while the wire-wound coils 1 continuously wound in the coil form in the laying head 13 are being dropped on the conveyor 20, the air blown from the air blowing unit 14, which is arranged in series along a conveyor, When the wire-wound coil 1 is brought into contact with the wire-wound coil 1 to be fed, the wire-wound coils are cooled at a low temperature before the heat-treatment.

For example, the temperature of the wire rod coil 1 when dropped on the feeding roller 20a while being wound by the laying head 13 is approximately 850 to 950 DEG C, while the wire rod coil 1 subjected to cooling is approximately 150 To about 300 ° C.

On the other hand, the blowing unit 14 includes an air duct 14b in which a blower 14a is provided at a lower portion, and an opening portion, that is, a nozzle opening 14c, disposed between the conveying rollers 20 is provided on the air duct 14b do.

For example, such a blowing unit 14 is also called a stellmoor cooling stall, and it has the advantage of providing various cooling capacities according to the cooling conditions such as the strength of the wind power or the feeding speed of the wire coil 1, And the same blowing in the width direction of the coil 1 is realized.

2 and 3, the side portion (edge portion) of the wire-wound coil 1 when the wire-wound coil 1 is mounted on the stator core 1 As shown in FIG. 4, under the same blowing environment, at the time when the transformation of the material to be cooled occurs, the central portion of the wire rod coil 1 And the temperature difference between the side portions is large. For example, as shown in FIG. 3, when the wire coil is stacked, a difference in density between the side portion (portion A 'in FIG. 2) and the central portion of the wire coil 1 is considerably different as shown in FIG. Under the blowing environment, a temperature difference of up to about 80 ° C occurs at the time of transformation of the material to be cooled.

As described above, the microstructure varies in the width direction of the wire-wound coil 1 due to the temperature difference due to the difference in cooling rate between the wire-wound coils 1 depending on the difference in the stacking densities, resulting in product failure.

Further, when the microstructure of the wire coil 1 varies due to the cooling fluctuation of the wire coil 1, an additional heat treatment process is required, which causes an increase in the production cost.

As shown in FIGS. 5 and 6, when the temperature of the wire rod coil is measured according to the distance from the laying head, the wire rod coil is cooled by air, and the temperature is lowered with time. In this case, since the edge portion of the wire rod coil has a relatively high rack density, the cooling rate is relatively slower than the center portion of the wire rod coil, and the widthwise temperature difference becomes larger as the distance from the laying head increases . That is, as the distance from the laying head increases, a difference in the temperature history between the center portion and the both side portions of the wire coil becomes severer.

For reference, when the product is obtained by slowly cooling the wire coil to produce a product having a relatively low hardness, the slow cooling is induced using the slow cooling cover (90 in FIG. 7) without using the blowing unit Therefore, when the material deviation due to the above-described cooling unevenness occurs, there is a fatal problem in the product.

On the other hand, in order to reduce the temperature variation in the width direction of such a wire coil, conventionally, there is a table roller method which is capable of changing the change in the density of the wire coil wound up and falling at the speed of the roller. In this method, a wire coil is formed concentrically from the laying head, and the difference in the overlapping density of the wire rod due to the uneven wear and slip of the table roller due to the hot wire coil contact when the drop roller is transported to the table roller of the Stellmoor cooling facility have. In order to solve such a problem, in order to solve such a problem, it is attempted to solve such a problem by generating a difference in rotation speed for each section by dividing the cooling section into several sections, but it has not been able to remarkably improve the compacting density of the wire coil, There are limitations such as wear and shape deformation.

In another method, as disclosed in Japanese Patent Application No. 1996-351284, which is devised by KOBE, the center portion of the hot-rolled wire coil is radiated through a heat heater provided in the hot-rolled cover so that the temperature deviation between the center portion and the side portion There is a way to reduce it. However, in order to use such a method, not only is the cost for the additional equipment (heating heater in the slow cooling cover) high, but also indirect heating method using radiative heat transfer is used, so heat loss is large and it is not economically effective. In addition, there is a limitation in that additional structures and control methods must be implemented to control the temperature of the desired point.

Korean Patent Publication No. 10-2010-0054470

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a wire rod coil refrigerator for eliminating cooling imbalance due to the density of a wire rod coil.

According to an aspect of the present invention, there is provided a wire coil refrigerator comprising: a conveyor for feeding a wire coil; And cover means covering the wire coil on the conveyor, wherein the side covering range of the wire coil is varied to uniformly cool the wire coil.

Here, the cover means may include: an upper cover that covers an upper portion of the wire coil; And a side cover covering the side of the wire coil, the side cover pivotably connected to the top cover.

At this time, the cover means includes a main winding member installed on the upper cover; And a main rope connected to the side cover and wound and unwound by the main winding member.

The cover unit includes a deflector unit rotatably connected to a lower end of the side cover; A sub winding member provided on the side cover; And a sub-rope connected to the deflector portion and wound and unwound by the sub-winding member.

In addition, a plurality of the cover means may be arranged along the conveying direction of the wire-wound coil so that the side-cover range with respect to the wire-wound coil is adjusted according to the distance that the wire-wound coil is away from the laying head.

According to another aspect of the present invention, there is provided a blowing device for blowing air to an air supply line, the blowing device including a blowing unit for blowing air to supply air to the air supply line, An air flow hole associated with the air supply line may be formed therein.

Here, a plurality of the cover means may be arranged along the feeding direction of the wire member coil so that the air injection amount to the side portion of the wire member coil is adjusted in accordance with the distance that the wire member coil is away from the laying head.

In addition, the present invention further includes a temperature measuring means mounted on a lower portion of the cover means for measuring a temperature according to a widthwise position of the wire coil, wherein the temperature measuring means is electrically connected to the cover means, So that the side covering range of the cover means and the blowing amount of the blowing operation means can be adjusted according to the temperature measurement value by the temperature measuring means.

The cover member is configured such that the side covering range of the wire member coil is variable and the air is blown to both side portions of the wire member coil so as to achieve uniform cooling according to the position of the wire member coil in the width direction It has the effect of being able to.

In the present invention, a plurality of the cover means are disposed along the feeding direction of the wire member coil, so that the cooling ability of the side portion of the wire member coil can be adjusted corresponding to the temperature distribution in the width direction of the wire member coil in accordance with the distance from the laying head There is an advantage.

In addition, the present invention has an advantage that the side covering range and the air injection amount to the side portion of the wire coil can be automatically controlled by constituting the temperature measurement means for measuring the temperature distribution in the width direction of the wire coil.

1 is a schematic view showing a process of manufacturing a general wire coil.
Fig. 2 is a plan view schematically showing the wire-coil cooling rack of Fig. 1. Fig.
FIG. 3 and FIG. 4 are graphs respectively showing temperatures depending on the stacking density and the stacking density of the wire coil when the wire rod coil is cooled using the cooling band of FIG.
5 is a graph showing the temperature of the wire coil according to the distance from the laying head.
6 is a graph showing the temperature distribution in the width direction of the wire coil according to the distance from the laying head to the wire rod coil without using the blowing unit in the cooling stand of FIG.
FIG. 7 is a view showing the refrigeration value of the wire coil according to the prior art used in the cooling zone of FIG. 2. FIG.
FIG. 8 and FIG. 9 are diagrams showing the refrigeration value of the wire coil according to the embodiment of the present invention.
Fig. 10 is a view showing a configuration in which air is blown through the cover means in the wire-wound coil slow cooling apparatus of Fig. 8;
Fig. 11 is a view showing the cover means in which air flow holes are formed in the wire-wound coil slow cooling apparatus of Fig. 10;
Fig. 12 is a view showing that a plurality of cover means of Figs. 8 and 10 are arranged along the conveying direction of the wire coil.
13 is a graph showing the temperature of the wire coil according to the distance from the laying head.
Fig. 14 is a graph showing the temperature distribution in the width direction of the wire-wound coil cooled by the present invention, in accordance with the distance from the laying head.

The coil spring of the present invention has a cover means for varying the side covering range with respect to the wire coil so that air can be sprayed to both sides of the wire coil so that uniform cooling can be achieved according to the widthwise position of the wire coil. As a technical feature.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 8 and FIG. 9 are diagrams showing the refrigeration value of the wire coil according to the embodiment of the present invention, and FIG. 10 is a view showing a configuration in which air is blown through the cover means in the wire coil slow cooling apparatus of FIG.

Fig. 11 is a view showing a cover means in which an air flow hole is formed in the wire-wound coil slow cooling apparatus of Fig. 10, and Fig. 12 is a plan view of the cover means of Figs. 8 and 10, Fig.

Referring to the drawings, the present invention includes a conveyor 20 for conveying a wire coil 1 and a cover means 100 configured to uniformly cool the wire coil 1 on the conveyor 20.

First, referring to Fig. 7, the slow cooling cover 90 of the wire coil 1 according to the prior art will be described with reference to Fig. 7, in which a blowing unit (see Fig. 1) disposed below the conveyor 20, The wire-wound coil 1 is gradually cooled at room temperature while the wire-wound coil 1 is being conveyed by the conveyor 20 without being operated. At this time, a slow cooling cover 90 is installed to cover the wire coil 1 on the conveyor 20 to further slow down the cooling rate.

Since the both side portions, which are the edge portions of the wire rod coil 1, have a relatively high rack density, the cooling rate is relatively slower than the center portion of the wire rod coil 1, The difference in the temperature history between the central portion and the both side portions of the wire coil 1 becomes severer as the distance from the laying head (13 in FIG. 1) increases. Particularly, with respect to the thermo-sensitive material for inducing the slow cooling using the slow cooling cover 90 without using the air blowing unit (14 in Fig. 1), a material problem due to such uneven cooling is caused in the product.

Here, the slow cooling cover 90 according to the prior art has a structure in which the upper portion 91, the side portions 92 are integrally fixed with respect to each other, and is arranged in a manner following the side wall 21 of the conveyor 20 , There is a limitation in that cooling unevenness for the wire-wound coil 1 as described above can not be solved at all.

8 to 12, the present invention includes cover means 100 covering the wire coil 1, the side covering range of which is variable so as to cool the wire coil 1 uniformly.

Specifically, the cover means 100 includes an upper cover 110 covering an upper portion of the wire coil 1, a side cover 120 (not shown) covering the side portion of the wire coil 1 and pivotally connected to the upper cover 110, ).

Here, the cover means 100 has an upwardly curved shape on the upper side of the wire-wound coil 1 and has a heat-insulating function for preventing the heat generated from the wire-wound coil 1 from coming out of the cover means 100 So as to cool the wire rod coil 1 slowly.

In this case, the upper cover 110 may have a structure in which it is supported and fixed to the side wall 21 as a structure connected to the side wall 21 and the connection frame 21a as shown in FIG. 12, It is of course possible to adopt a structure in which a separate frame extending from the conveyor 20 side to the upper side of the cover means 100 is installed and fixed although not shown in the drawing.

The side cover 120 may be configured to be rotated with respect to the upper cover 110 so that the side covering range can be varied.

That is, the side cover 120 is hinged to the side end of the upper cover 110 and rotates, so that the side cover 120 can be rotated with respect to the upper cover 110, The range can be changed.

Specifically, when the side cover 120 is arranged in a manner of being connected to the side wall 21, since the stagnant heat below the cover means 100 can not escape to the outside of the cover means 100, When the side cover 120 is rotated downward to be separated from the sidewall 21, the wire member coil 1 is wound around the wire member coil 1, 1 is exposed to the outside of the cover means 100, the cooling ability of the portion on the wire member coil 1 side can be increased. That is, since the outside air is introduced through the space between the side cover 120 rotated downward and the side wall 21 of the conveyor 20, the cooling efficiency for the side portion of the wire coil 1 can be increased .

Further, when the side covering range with respect to the wire member coil 1 is reduced by gradually turning to the lower side of the side cover 120, the side portion of the wire member coil 1 is further exposed to the outside of the cover means 100 The cooling performance of the portion on the side of the wire member coil 1 becomes higher. That is, as the space between the side cover 120 pivoted to the lower side and the side wall 21 of the conveyor 20 becomes larger, the amount of air flowing from the outside becomes larger, The cooling efficiency is further increased.

In addition, the cover means 100 may be provided with a pivotally driving structure for pivoting the side cover 120. This pivoting driving structure is, for example, as shown in the figure, Member 181 and a main rope 184 connected to the side cover 120 and wound and unwound by the main winding member 181. [ At this time, the main rope 184 is fixedly connected to the first clamp 183 mounted on the side cover 120 and supported by the support roller 182 mounted on the top cover 110 .

Here, the main winding member 181 can adjust the length of the main rope 184 by winding or unwinding the main rope 184 in a rotary drum type, and the length of the main rope 184 can be adjusted by the main rope 184, It is possible to implement an operation structure in which the side cover 120 to which the rope 184 is connected is rotated based on the hinge coupling portion with the upper cover 110.

Further, although not shown in the drawing, the rotating drive structure of the cover means 100 may be constituted by a drive motor and a drive cylinder as another example, but the present invention is not limited thereto, and the side cover 120 may be smoothly rotated, any conventional structure may be utilized.

The cover unit 100 includes a deflector unit 130 mounted on a lower end of the side cover 120, a sub winding member 191 installed on the side cover 120, and a deflector unit 130 connected to the deflector unit 130, And a sub-rope 194 wound and unwound by the winding member 191. [ At this time, the sub-rope 194 may be fixedly connected to the second clamp 193 mounted on the deflector unit 130.

Since the deflector unit 130 is attached to the lower end of the side cover 120 and rotates, the side covering range of the wire coil 1 can be more finely adjusted, Lt; RTI ID = 0.0 > 1). ≪ / RTI >

That is, the amount of air outside the cover means 100 flowing into the side portion of the wire coil 1 is controlled according to the rotation angle of the deflector portion 130, so that the cooling performance of the side portion of the wire coil 1 is controlled More precisely.

When the wire coil 1 fed on the conveyor 20 is meandering, the deflector unit 130 rotates correspondingly to the meandering direction of the wire coil 1, Can be adjusted in accordance with the advancing direction of the coil (1). At this time, the traveling direction of the wire coil 1 can be grasped by the temperature measuring means 300 described later.

10, the present invention further includes a blowing drive means 210 for providing a blowing force of air to supply air to the air supply line 220, An air flow hole 100a associated with the air supply line 220 may be formed therein so that air is jetted to both side portions of the wire coil 1 through the lower end portion as shown in Figs.

That is, when air is supplied to the cover means 100 through the air supply line 220 by the air blowing drive means 210, air formed in the upper cover 110, the side cover 120 and the deflector portion 130 The air is blown to both side portions of the wire coil 1 through the lower end of the side cover 120 through the flow hole 100a and the cooling efficiency of both side portions of the wire coil 1 can be increased by the air thus sprayed. For reference, since the air flow hole 100a in the side cover 120 and the deflector unit 130, which is a rotating structure, can leak air at the hinged portion, the air flow hole 100a can be made flexible By inserting and mounting the hose, the air can reach the lower end of the deflector unit 130 without being leaked in the middle.

In the meantime, the present invention may further include temperature measuring means 300 mounted on the lower portion of the cover means 100 and measuring the temperature according to the widthwise position of the wire-wound coil 1.

At this time, the temperature measuring means 300 is electrically connected to the cover means 100 and the blowing out means 210, so that the present invention can be applied to the cover means 100 according to the temperature measurement value of the temperature measuring means 300, And the air blowing amount of the blowing fan driving means 210 can be controlled.

At this time, the temperature measuring means 300 may be an arrangement structure mounted on the lower portion of the upper cover 110 at the support means as shown in the figure for example.

As a preferred example, the temperature measuring means 300 may be a scan type short-wavelength infrared temperature sensor, but is not limited thereto. If it is a temperature sensor capable of performing temperature measurement according to the widthwise position of the wire-wound coil 1 It goes without saying that any temperature sensor can be utilized.

12, the cover means 100 constituted as described above can have a structure in which a plurality of the cover means 100 are arranged along the conveying direction of the wire material coil 1, The side covering range can be adjusted according to the distance from the head and the air injection amount to the side portion of the wire coil 1 can be adjusted.

As one example, as the wire rod coil 1 is dropped from the laying head to the conveyor 20 and then transported away from the laying head, the side portion of the wire rod coil 1 becomes larger in temperature than the center portion. Correspondingly, in the present invention, a plurality of the cover means 100 described above are arranged in the traveling direction of the wire member coil 1, and the wire member coil 1 is configured such that the side covering range is increased according to the distance from the laying head, The cooling efficiency with respect to the side portion of the wire rod coil 1 is increased and the air injection amount with respect to the side portion of the wire rod coil 1 is separately increased, have.

Concretely, immediately after the wire member coil 1 has fallen from the laying head to the conveyor 20, the temperature difference according to the widthwise position of the wire member coil 1 is not large. Therefore, the side cover 120 does not rotate downward, 20 and lowering the air-blowing force of the blowing-out driving means 210. As the distance from the laying head is larger, the temperature difference in accordance with the position in the width direction of the wire-wound coil 1 becomes larger, The winder 120 gradually rotates downward and gradually separates from the sidewall 21 of the conveyor 20 and increases or decreases the air sending wind force of the winder driving means 210 together or separately.

In addition, the cooling capability control by the above-described configuration may be changed depending on various steel types and sizes of the wire coil 1.

The temperature distribution in the width direction of the wire-wound coil 1 along the distance from the laying head to the wire-wound coil 1 is measured by the temperature measuring means 300 described above, The air injection amount to the side portion can be automatically controlled.

The amount of air blowing to the wire coil 1 can be controlled not only by the blowing drive means 210 but also by the flow control valve 230 of the air supply line 220 branched to each cover means 100, Of course.

As a result, when the wire-wound coil 1 is slowly cooled by the present invention, the temperature difference between the center portion and the side portion of the wire-wound coil at the temperature of the wire-wound coil depending on the distance from the laying head, As a result, there is a similar pattern.

According to the present invention configured as described above, since the cover means 100 is configured such that the side covering range of the wire coil 1 is variable and air is blown to both side portions of the wire coil 1, Uniform cooling according to the position in the width direction.

In the present invention, a plurality of cover means 100 are disposed along the conveying direction of the wire member coil 1 so as to correspond to the widthwise temperature distribution of the wire member coil 1 along the distance from the laying head. 1) can be controlled.

Further, according to the present invention, since the temperature measuring means 300 for measuring the temperature distribution in the width direction of the wire coil 1 is configured, the side covering range and the air injection amount to the side portion of the wire coil 1 can be automatically controlled have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

1: wire coil 20: conveyor
21: side wall 21a: connection frame
100: cover means 100a: air flow hole
110: upper cover 120: side cover
130: deflector unit 181: main winding member
182: Support roller 183: First clamp
184: main rope 191: sub winding member
193: Second clamp 194: Subrope
210: blower driving means 220: air supply line
230: Flow control valve 300: Temperature measuring means

Claims (8)

A conveyor (20) for conveying the wire coil (1); And
A covering means (100) covering the wire coil (1) on the conveyor (20), the side covering range of which is varied with respect to the wire coil (1) so as to uniformly cool the wire coil ,
The cover means (100)
An upper cover 110 covering an upper portion of the wire-wound coil 1; And
A side cover 120 covering the side of the wire rod coil 1 and pivotally connected to the upper cover 110 such that a side portion of the wire rod coil 1 is exposed to the outside of the cover means 100;
And a wire coil winding device.
delete The method according to claim 1,
The cover means (100)
A main winding member (181) provided on the upper cover (110); And
A main rope 184 connected to the side cover 120 and wound and unwound by the main winding member 181;
Further comprising: a wire coil winding device
The method of claim 3,
The cover means (100)
A deflector 130 rotatably connected to a lower end of the side cover 120;
A sub winding member (191) provided on the side cover (120); And
A sub-rope 194 connected to the deflector unit 130 and wound and unwound by the sub-winding member 191;
Further comprising: a wire coil winding device
The method according to claim 1,
The cover means (100)
A plurality of the wire rods are arranged along the feeding direction of the wire roving coil 1 so that the side covering range of the wire roving coil 1 with respect to the wire roving coil 1 is adjusted in accordance with the distance from the laying head. Wire coil cooling apparatus.
6. The method according to any one of claims 1 to 5,
And blowing drive means (210) for providing a blowing force of air to supply air to the air supply line (220)
The cover means (100)
And an air flow hole (100a) connected to the air supply line (220) is formed inside the wire coil (1) so that air is sprayed to both side portions of the wire coil (1) through a lower end portion.
The method according to claim 6,
The cover means (100)
A plurality of the wire rods are disposed along the feeding direction of the wire roving coil 1 so that the amount of air injection to the side portion of the wire roving coil 1 is adjusted in accordance with the distance that the wire roving coil 1 is away from the laying head The wire coil cooling apparatus.
The method according to claim 6,
And a temperature measuring means (300) mounted on a lower portion of the cover means (100) for measuring a temperature according to a widthwise position of the wire rod coil (1)
The temperature measuring means 300 is electrically connected to the cover means 100 and the blowing outlet driving means 210 so that the side covering range of the cover means 100 is changed in accordance with the temperature measurement value by the temperature measuring means 300, And a blowing amount of the blowing fan driving means (210) is adjusted.

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