An assembled pad for heat treatment of ring-type workpieces

Abstract

The present application relates to an assembled pad for heat treatment of ring-type workpieces, which belongs to the technical field of heat treatment auxiliary tooling, and includes a plurality of support plates arranged side by side, wherein the support plate includes a support base and support columns fixed at both ends of the support base, a placement space is formed between the support base and the support column, an assembly hole is provided on the support column, and at least one rib plate for connecting several support plates is inserted in the assembly hole. The support plate is arranged to be assembled, so that the connection between the support column and the support base is not easy to generate thermal stress, and the occurrence of tearing phenomenon at the connection between the support column and the support base is reduced, thereby extending the service life of the support plate.

Description

Technical Field

[0001] The present application relates to the technical field of heat treatment auxiliary tooling, and in particular to an assembled pad for heat treatment of ring-type workpieces. Background Art

[0002] Heat treatment refers to a metal thermal processing process in which the material is heated, kept warm and cooled in the solid state to obtain the expected structure and properties.

[0003] In related technologies, such as Figure 1 As shown, when the coil parts are heat treated, a plurality of integrally arranged I-shaped spacing support plates 6 are provided between each two adjacent coil parts. The spacing support plates 6 are composed of a support seat 61 and support blocks 62 located at both ends of the support seat. The support seat 61 and the support blocks 62 are welded to each other. The coil parts are supported by the spacing support plates 6, and the coil parts can be stacked and placed in a furnace for heat treatment.

[0004] With respect to the above-mentioned related technologies, the inventors believe that when the one-piece cast or integrally forged spacer support plate is subjected to quenching treatment, the spacer support plate frequently expands and contracts, and hot nodes are easily formed on the spacer support plate, thereby eliminating the alternating stress generated by the hot nodes, causing cracks on the spacer support plate, thereby reducing the service life of the furnace spacer support plate. Summary of the invention

[0005] In order to improve the problem of low service life of the support plate, the present application provides an assembled gasket for heat treatment of ring-type workpieces.

[0006] The present application provides a heat treatment assembly pad for a ring-type workpiece, which adopts the following technical solution:

[0007] A prefabricated pad for heat treatment of ring-type workpieces, including a plurality of support plates arranged side by side, wherein the support plates include a support base and support columns fixed at both ends of the support base, a placement space is formed between the support base and the support columns, an assembly hole is opened on the support column, and at least one rib plate for connecting several support plates is inserted in the assembly hole.

[0008] By adopting the above technical solution, the ring-like workpiece is placed in the placement space between the support base and the support column, the ring-like workpiece is supported by the support base, and the support columns are located on both sides of the thickness direction of the ring-like workpiece, that is, the position of the ring-like workpiece is limited by the support columns, and then the ring-like workpiece is placed in the furnace for heat treatment. When there are more than one ring-like workpieces to be heat-treated, a support plate is superimposed on the support column, and a circle is formed by two support plates to wrap the edge of the height direction of the ring-like workpiece to protect the ring-like workpiece and ensure the accuracy of the ring-like workpiece after heat treatment. When superimposing the next workpiece, another support plate is superimposed, that is, each two adjacent support plates are mirrored along the symmetrical surface of the connection surface between the two. Then place the ring-like workpiece, and finally cover it with a support plate. In this way, the superposition of multiple ring-like workpieces can be achieved.

[0009] If the support plate is set to be cast in one piece, first, when the heat stress concentration corners of the support base and the support column are heated and cooled by the heat treatment furnace, the heat stress concentration corners of the support base and the support column are easily expanded by heat, and the casting intersection is easy to shrink when cooling. Such repeated operations are easy to form thermal fatigue at the heat stress concentration corners, and it is easy to cause tearing. Secondly, it is formed by welding at the connection, which is easy to generate additional stress at the heat stress concentration corners, and it is easy to cause the phenomenon of desoldering, thereby easily reducing the service life of the heat treatment furnace bottom plate. Thirdly, the processing cost of the support plate formed by one-piece welding is high, the floor area is large, and if there is a partial damage on the support plate, it is necessary to repair the welding, which increases the welding stress again; or directly replace the entire furnace bottom plate, which causes energy waste on the one hand and increases the cost on the other hand. Therefore, the support plate is set to be assembled, so that the connection between the support column and the support base is not easy to generate thermal stress, and the tearing phenomenon at the connection between the support column and the support base is reduced, thereby extending the service life of the support plate, and it also has the effects of not easy to deform, small single piece weight, and low repeated energy consumption. When a plate of the assembled support plate is damaged, the staff can replace the damaged plate with an undamaged plate and reinstall it, thereby reducing costs and facilitating maintenance. The assembled pad for the workpiece in the circle is assembled by several support plates, so that it can be assembled and spliced ​​according to the actual area, thereby increasing the scope of application.

[0010] Optionally, a locking member is provided between the rib plate and the supporting column.

[0011] By adopting the above technical solution and providing the locking piece, it is possible to clamp the rib plate in the assembly hole, thereby making it possible to fix the rib plate and the supporting column more firmly.

[0012] Optionally, the locking member is a locking pin, and the locking pin is inserted between two adjacent ribs or between the side wall of the assembly hole and the rib.

[0013] By adopting the above technical solution, when a rib plate is inserted into the assembly hole, the locking pin can be inserted between the rib plate and the side wall of the assembly hole, and can be inserted between each surface of the locking pin and the side wall of the assembly hole according to actual conditions. When more than two rib plates are inserted into the assembly hole, the locking pin can be inserted between two rib plates, or between the rib plate and the side wall of the assembly hole, so that the rib plate and the supporting column can be fixed more firmly.

[0014] Optionally, a plurality of limiting grooves are formed on the rib plate, and the limiting grooves and the support plates are arranged in one-to-one correspondence, and the support columns are inserted into the limiting grooves.

[0015] By adopting the above technical solution, the setting of the limit groove can play a limiting role. On the one hand, the distance between two adjacent support plates can be limited by the limit groove. On the other hand, the rib plate, support column and locking pin expand and contract, which may easily cause displacement between the rib plate and the support column, between the rib plate and the locking pin, or between the locking pin and the support column, and there is a risk of the wedge pin and the rib plate falling off.

[0016] Optionally, the rib plate includes a first rib plate and a second rib plate, the first rib plate and the second rib plate are both plugged into the support column, and the locking pin is inserted between the two rib plates;

[0017] The locking pins are configured in a wedge shape and are arranged in pairs. The two locking pins arranged in pairs are inserted relatively along the opposite sides of the two rib plates.

[0018] By adopting the above technical solution, the first rib plate and the second rib plate are both provided with limiting grooves, and both are mutually plugged with the supporting columns to increase the connection strength of the two adjacent connecting plates. When the two locking pins are relatively inserted, the friction force on the inclined surfaces of the two locking pins can be used to achieve fixation. The two locking pins are knocked in opposite directions to make the connection between the two tighter and tighter, and finally form a self-locking, that is, the locking between the first rib plate, the second rib plate and the supporting column can be achieved with a smaller force. In addition, during heat treatment, the two locking pins, the first rib plate and the second rib plate can expand at the same time, and when cooled, they can shrink at the same time, so that the first rib plate, the second rib plate, the two locking pins and the supporting column are not easy to loosen.

[0019] Optionally, the opening direction of the limiting groove is consistent with the length direction of the supporting column.

[0020] By adopting the above technical solution, the supporting column can be subjected to vertical load. When multiple ring-type workpieces are stacked, all gravity can be borne by the supporting plate, thereby reducing the deformation of the ring-type workpiece caused by the force, thereby ensuring the accuracy of the ring-type workpiece after heat treatment.

[0021] Optionally, four assembly holes are provided on each of the support plates.

[0022] By adopting the above technical solution, four assembly holes are arranged on each support plate, and at least one rib plate is passed through each assembly hole, so that the number of connection points between the rib plate and the support column can be increased. Under the condition of meeting the pressure bearing strength, the more connection points the better, and the body expansion is converted into linear expansion, that is, expansion in one direction, and when heat treatment is performed on multiple ring parts, multiple support plates need to be stacked, and the expansion direction is consistent with the stacking direction of the support plates, so that the expansion amount can be reduced.

[0023] Optionally, a stress relief groove is provided between the support base and the support column.

[0024] By adopting the above technical solution, the arrangement of the stress relief groove can, on the one hand, facilitate the withdrawal of the tool when processing the support base and the support column. It can make it difficult for the ring-like workpiece to contact and interfere with the support base and the support column. On the other hand, it can reduce the stress concentration at the connection between the support base and the support column, thereby reducing the phenomenon of fracture between the support base and the support column.

[0025] Optionally, the cross-section of the supporting column in the length direction is set to be trapezoidal.

[0026] By adopting the above technical solution, when multiple ring-type workpieces need to be heat treated at the same time, multiple support plates and ring-type workpieces need to be stacked, and the weight of the stacked support plates and the multiple ring-type workpieces will be borne by the support plates. Therefore, the length direction of the support column, that is, the vertical direction of the support column is set to a trapezoid, so that an equal-strength beam can be formed, thereby playing a role of reliable support.

[0027] Optionally, a plurality of through holes are formed on the support plate.

[0028] By adopting the above technical scheme, the provision of the through holes can, on the one hand, save materials and thus reduce costs; on the other hand, reduce the weight of the support plate to facilitate transportation before and after heat treatment; on the third hand, reduce the expansion of the support plate; on the third hand, the through holes can increase the quenching flow channel, so that the quenching of the ring workpiece can be more uniform, thereby improving the quality of the heat treatment of the ring workpiece.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. The service life of the support plate can be extended by setting the support base, support column, assembly holes and rib plate;

[0031] 2. The two locking pins arranged in pairs are inserted relatively along the opposite sides of the two ribs, so that the first rib, the second rib, the two locking pins and the supporting column are not likely to become loose;

[0032] 3. By setting the through hole, the quenching flow channel can be increased, so that the quenching of the ring workpiece is more uniform, thereby improving the quality of the heat treatment of the ring workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a mat of related technology;

[0034] Figure 2 It is a schematic diagram of the overall structure of the assembled cushion in the embodiment of the present application;

[0035] Figure 3 It is a schematic diagram of the overall structure of the support base;

[0036] Figure 4 It is a schematic diagram of the exploded structure of the support base.

[0037] Explanation of the reference numerals in the accompanying drawings: 1. Support plate; 11. Support base; 12. Support column; 13. Placement space; 14. Assembly hole; 2. Rib plate; 21. Limiting groove; 22. First rib plate; 23. Second rib plate; 3. Locking piece; 31. Locking pin; 4. Stress relief groove; 5. Through hole; 6. Spacer support plate; 61. Support seat; 62. Support block. DETAILED DESCRIPTION

[0038] The following is combined with Figure 2-4 This application is described in further detail.

[0039] The embodiment of the present application discloses an assembled pad for heat treatment of ring-type workpieces.

[0040] Reference Figure 2 A heat treatment assembly pad for ring-type workpieces includes a plurality of support plates 1 and a plurality of rib plates 2. The support plates 1 are arranged parallel to each other. In this embodiment, four support plates 1 are provided, and the rib plates 2 are arranged parallel to each other. The support plates 1 are fixedly connected by the rib plates 2.

[0041] Reference Figure 3Each support plate 1 includes a support base 11 and two support columns 12. The support columns 12 are fixed to the ends of the support base 11. A placement space 13 for placing the ring-like workpiece is formed between the support base 11 and the support columns 12. A plurality of through holes 5 are provided on the support plate 1. The ring-like workpiece is placed in the placement space 13 and then placed in a furnace for heat treatment. The through holes 5 can be used as a quenching flow channel, so that the ring-like workpiece can be quenched more evenly. A stress relief groove 4 is provided between the support base 11 and the support columns 12 to reduce the phenomenon of fracture between the support base 11 and the support columns 12. When heat treating multiple ring-type workpieces, multiple support plates 1 need to be superimposed on each other, that is, every two support plates 1 are interlocked with each other to fix a part inside the ring. When superimposing the ring-type workpieces, another support plate 1 is placed on the support plate 1, and then the ring-type workpiece is fixed in the same way. Therefore, the weight of the entire workpiece and the support plate 1 will be supported by the support plate 1 itself. Therefore, the cross-section of the support column 12 in the length direction is set to a trapezoid, which plays a role of reliable support.

[0042] Reference Figure 4 , the direction of the supporting column 12 perpendicular to the supporting bottom plate is the length direction, at least one assembly hole 14 is opened in the length direction of the supporting column 12, and one assembly hole 14 or two assembly holes 14 can be opened in the length direction of the supporting column 12. The number of assembly holes 14 is determined according to the actual length of the supporting column 12. In this embodiment, two assembly holes 14 are opened in the length direction of the supporting column 12, that is, four assembly holes 14 are opened on each supporting plate 1. If one assembly hole 14 is opened in the length direction of the supporting column 12, and a rib plate 2 is inserted into the assembly hole 14, four connection points will be formed on the entire supporting plate 1. If two assembly holes 14 are opened in the length direction of the supporting column 12, and a rib plate 2 is inserted into the assembly hole 14, eight connection points will be formed on the entire supporting plate 1. Under the condition of meeting the bearing strength, the more connection points, the better, and the body expansion is converted into linear expansion.

[0043] Reference Figure 4, at least one of the above-mentioned ribs 2 is inserted into each assembly hole 14, and a plurality of limiting grooves 21 are provided on the ribs 2, and the limiting grooves 21 and the support plates 1 are arranged one by one. The support column 12 is inserted into the limiting groove 21, that is, the ribs 2 are inserted into the assembly hole 14, and one rib 2 or two ribs 2 can be inserted, and the opening of the limiting groove 21 on the ribs 2 can be inserted along the length direction of the support column 12, or can be inserted along the width direction of the support column 12. In this embodiment, two ribs 2 are inserted, namely the first rib 22 and the second rib 23, to enhance the connection strength between the two adjacent support plates 1 and increase the bearing capacity. The openings of the limiting grooves 21 on the first rib 22 and the second rib 23 are arranged to diverge, and the openings of the two limiting grooves 21 are both opened in the length direction of the support column 12, so that the support column 12 is subjected to vertical load. The shapes and sizes of the first rib plate 22 and the second rib plate 23 can be the same or different. In the present embodiment, the lengths of the first rib plate 22 and the second rib plate 23 are the same, the widths of the first rib plate 22 and the second rib plate 23 are different, the depths of the limiting groove 21 of the first rib plate 22 and the depths of the limiting groove 21 of the second rib plate 23 are also different, thereby reducing the size of the assembly hole 14 and increasing the strength of the support plate 1.

[0044] Reference Figure 3 and Figure 4 , a locking member 3 is inserted into the assembly hole 14, and in this embodiment, the locking member 3 is a wedge-shaped locking pin 31. If a rib plate 2 is inserted into each assembly hole 14, the locking pin 31 can be inserted between the rib plate 2 and the side wall of the assembly hole 14, can be located on both sides of the rib plate 2, or located on the upper and lower sides of the rib plate 2, can also be inserted on both the upper and lower sides of the rib plate 2, or can also be inserted on both sides of the rib plate 2 at the same time. In this embodiment, since two rib plates 2 are provided, the locking pin 31 is provided between the two rib plates 2, that is, the locking pin 31 is inserted between the first rib plate 22 and the second rib plate 23, and two wedge-shaped locking pins 31 are inserted between the two rib plates 2. The small ends of the two wedge-shaped locking pins 31 are inserted relative to each other, so that the inclined surfaces of the two locking pins 31 can fit each other. During installation, first insert the first rib plate 22 into the assembly hole 14, and then move the first rib plate 22 toward the opening direction of the limit groove 21, so that the first rib plate 22 can be inserted into the supporting column 12, and then the second rib plate 23 is inserted into the supporting column 12 in the same reverse direction. At this time, a gap will be generated between the first rib plate 22 and the second rib plate 23, and the two locking pins 31 are inserted relative to each other along the opposite sides of the two rib plates 2 so that the inclined surfaces of the two locking pins 31 gradually contact, and then the two locking pins 31 are knocked back and forth to lock the locking pins 31 between the first rib plate 22 and the second rib plate 23.

[0045] The implementation principle of the assembled pad for heat treatment of ring-type workpieces in the embodiment of the present application is as follows: when installing the support plate 1, first, four support plates 1 are arranged in parallel, and the assembly holes 14 at the same position on the four support plates 1 are arranged to communicate with each other. Secondly, the first rib plate 22 is inserted into the assembly hole 14, and then the first rib plate 22 is moved toward the opening direction of the limiting groove 21 of the first rib plate 22, so that the first rib plate 22 can be inserted into the support column 12. Thirdly, the second rib plate 23 is inserted into the assembly hole 14, and then the second rib plate 23 is moved toward the opening direction of the limiting groove 21 of the second rib plate 23, so that the second rib plate 23 can be inserted into the support column 12, so that the limiting groove 21 on the first rib plate 22 and the limiting groove 21 on the second rib plate 23 can be installed on the support column 12 in opposite directions. Then, a locking pin 31 is inserted between the first rib plate 22 and the second rib plate 23. The two locking pins 31 are inserted along the opposite sides of the two rib plates 2 to lock the first rib plate 22 and the second rib plate 23 on the support column 12. The assembly holes 14 on the support plate 1 can be installed according to the above method.

[0046] When supporting the coil workpiece, the coil workpiece is placed in the placement space 13, supported by the support base 11, and then limited by two support columns 12, and then a support plate 1 is symmetrically placed on the support column 12, that is, two adjacent support plates 1 are symmetrically arranged. When placing the next coil workpiece, a support plate 1 is superimposed on the support bottom plate, and then placed according to the above method, so that multiple coil workpieces can be superimposed. After the coil workpiece is installed on the support plate 1, it is transported as a whole and placed in the furnace for heat treatment.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An assembled pad for heat treatment of ring-type workpieces, characterized in that: The invention comprises a plurality of support plates (1) arranged side by side, wherein the support plates (1) comprise a support base (11) and support columns (12) fixed at both ends of the support base (11); a placement space (13) is formed between the support base (11) and the support columns (12); an assembly hole (14) is provided on the support column (12); at least one rib plate (2) for connecting a plurality of support plates (1) is inserted into the assembly hole (14); and a locking member (3) is provided between the rib plate (2) and the support column (12).

2. The assembled pad for heat treatment of ring-type workpieces according to claim 1, characterized in that: The locking member (3) is a locking pin (31), and the locking pin (31) is inserted between two adjacent rib plates (2) or between the side wall of the assembly hole (14) and the rib plate (2).

3. The assembled pad for heat treatment of ring-type workpieces according to claim 2, characterized in that: The rib plate (2) is provided with a plurality of limiting grooves (21), the plurality of limiting grooves (21) and the plurality of supporting plates (1) are arranged in a one-to-one correspondence, and the supporting columns (12) are inserted into the limiting grooves (21).

4. The assembled pad for heat treatment of ring-type workpieces according to claim 3, characterized in that: The rib plate (2) comprises a first rib plate (22) and a second rib plate (23), wherein the first rib plate (22) and the second rib plate (23) are both plugged into the support column (12), and the locking pin (31) is inserted between the two rib plates (2); The locking pins (31) are configured in a wedge shape. The locking pins (31) are configured in pairs. The two locking pins (31) configured in pairs are inserted relatively along opposite sides of the two rib plates (2).

5. The assembled pad for heat treatment of ring-type workpieces according to claim 3, characterized in that: The opening direction of the limiting groove (21) is consistent with the length direction of the supporting column (12).

6. The assembled pad for heat treatment of ring-type workpieces according to claim 1, characterized in that: Four assembly holes (14) are provided on each support plate (1).

7. The assembled pad for heat treatment of ring-type workpieces according to claim 1, characterized in that: A stress relief groove (4) is provided between the support base (11) and the support column (12).

8. The assembled pad for heat treatment of ring-type workpieces according to claim 1, characterized in that: The cross section of the supporting column (12) in the length direction is arranged to be trapezoidal.

9. The assembled pad for heat treatment of ring-type workpieces according to claim 1, characterized in that: The support plate (1) is provided with a plurality of through holes (5).

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