Anti-deformation device suitable for heat treatment aging of long-axis workpieces

Abstract

An anti-deformation device suitable for heat treatment aging of long-axis workpieces comprises an anti-deformation disc and a support, the support comprises a plurality of supporting columns and a supporting disc, the anti-deformation disc is placed on the supporting disc, when the anti-deformation device is used, the appropriate anti-deformation disc is selected firstly, then the anti-deformation disc is placed on the supporting disc, and then the support is hoisted into a box type trolley furnace; the long-axis workpiece is hoisted into the anti-deformation disc, then the long-axis workpiece is subjected to thermal aging treatment, at the moment, upward stress is generated in the long-axis workpiece, the stress counteracts the gravity of the long-axis workpiece, and therefore the long-axis workpiece cannot deform along the axis of the long-axis workpiece due to the stress, and the long-axis workpiece can be prevented from deforming along the axis of the long-axis workpiece; hot air circulates in the insertion hole, and the heat conduction effect of the anti-deformation disc is good, so that the heat treatment aging effect of the journal can be ensured. Therefore, the design can prevent the long shaft workpiece from deforming along the axis in heat treatment aging, and can ensure the heat treatment aging effect of the shaft neck.

Description

Technical Field

[0001] The invention relates to an anti-deformation device, belongs to the field of heat treatment aging of long shaft workpieces, and in particular to an anti-deformation device suitable for heat treatment aging of long shaft workpieces. Background Art

[0002] In order to eliminate the internal stress of metal workpieces and improve the strength of metal workpieces, it is often necessary to perform heat treatment on metal workpieces. However, metal workpieces often deform during heat treatment. The deformation will not only cause the size of the metal workpiece to change, but also cause the metal workpiece to be unable to be used normally.

[0003] A Chinese patent application with application number 202410327437.X and application date March 21, 2024 discloses a heat treatment anti-deformation device for universal pipe parts, including a guide assembly, a nozzle support assembly obliquely and slidably mounted on the guide assembly, an adjustment assembly mounted on the guide assembly and the nozzle support assembly, and a clamping assembly; when the front end face of the nozzle support assembly is flush with the front end face of the guide assembly, the front end top wall of the nozzle support assembly fits with the inner wall of the nozzle; although this design supports the nozzle of the workpiece so that the nozzle of the workpiece does not deform, it still has the following defects: During the heat treatment, this design can only support the nozzles of long-axis workpieces (tube parts), so only the nozzles will not deform. However, long-axis workpieces will deform along their axial direction during the heat treatment. This design cannot prevent the long-axis workpieces from deforming along their axial direction during the heat treatment.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects and problems in the prior art that long-axis workpieces cannot be prevented from deforming along their axes during heat treatment, and to provide an anti-deformation device suitable for heat treatment of long-axis workpieces, which can prevent the long-axis workpieces from deforming along their axes during heat treatment.

[0006] To achieve the above objectives, the technical solution of the present invention is: An anti-deformation device suitable for heat treatment aging of long-axis workpieces, the device comprising an anti-deformation disk and a bracket; The bracket includes a plurality of support columns, the support columns are symmetrically distributed along the center of the bracket, the top of the support column is higher than the bottom of the support column, the top of the support column is connected to the bottom of the support plate, the support plate is cylindrical, the middle of the support plate is a support hole, and the support hole is a through hole; The top of the support plate is connected to the bottom of the anti-deformation plate, the middle of the anti-deformation plate is an insertion hole, the insertion hole is a through hole, and the insertion hole is connected to the support hole.

[0007] The anti-deformation disk is provided with a lower boss along the outer periphery of the insertion hole, and the outer surface of the lower boss is connected to the inner surface of the support hole.

[0008] The number of the support columns is four, the angle between two adjacent support columns is a right angle, and step plates are evenly distributed between two adjacent support columns.

[0009] The step plate includes an upper step plate, a middle step plate and a lower step plate. The two ends of the upper step plate are respectively connected to the tops of two adjacent support columns, the two ends of the middle step plate are respectively connected to the middles of two adjacent support columns, and the two ends of the lower step plate are respectively connected to the bottoms of two adjacent support columns.

[0010] One end of the step plate close to the support column is connected to one end of the support rod, and the other end of the support rod is connected to one end of the support column close to the step plate. The step plate, the support rod and the support column together form a triangular structure.

[0011] The bottom of the support column is connected to the top of the bottom support plate, and the bottom of the bottom support plate is a planar structure.

[0012] The top of the support column is connected to the bottom of the top support plate, the top of the top support plate is a planar structure, and the top of the top support plate is connected to the bottom of the support disk.

[0013] The angle between the support column and the horizontal plane is a support angle, and the support angle is less than seventy-five degrees.

[0014] The support angle is sixty degrees.

[0015] The anti-deformation disk is made of austenitic stainless steel, and the flatness of the anti-deformation disk is less than or equal to 0.1 mm.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an anti-deformation device suitable for heat treatment and aging of long-axis workpieces, the device comprises an anti-deformation disk and a bracket, the bracket comprises a plurality of symmetrically distributed support columns, the tops of the support columns are connected to the bottom of the support disk, the middle of the support disk is a support hole, the support disk is detachably connected with an anti-deformation disk, the anti-deformation disk comprises a lower boss and an insertion hole, the insertion hole is connected to the support hole, when in use, first select an anti-deformation disk with a suitable diameter according to the long-axis workpiece, then connect the anti-deformation disk to the support disk, then hoist the device to the furnace bottom plate of a box-type trolley furnace, then hoist the long-axis workpiece into the insertion hole and the support hole, the journal of the long-axis workpiece is connected to the top of the anti-deformation disk, and then the box-type trolley furnace performs heat treatment and aging on the long-axis workpiece, at this time, upward stress will be generated inside the long-axis workpiece, and then the downward gravity of the long-axis workpiece itself will offset the upward stress, so the long-axis workpiece will not deform, the advantages of the present invention also include: First point: by using anti-deformation plates and brackets, long-axis workpieces can be placed vertically during heat treatment, so the stress direction is opposite to the gravity direction of the long-axis workpieces. Gravity can offset the stress, so it can prevent the long-axis parts from bending, warping and other deformations along their axis, that is, it can ensure that the thermal deformation of the axis of the long-axis parts is less than or equal to 0.1 mm; Second point: The anti-deformation disk is connected to the journal of the long shaft parts. The inner diameter of the insertion hole is slightly larger than the outer diameter of the journal. Therefore, hot air circulates in the insertion hole. The circulating hot air can ensure the heat treatment aging effect at the journal. The part of the journal connected to the anti-deformation disk reaches the heat treatment temperature through the heat conduction of the anti-deformation disk. The connection part can reach the heat treatment temperature through the uniform temperature insulation treatment, so the heat treatment aging effect of the journal can be guaranteed. The third point: the anti-deformation disk and the support disk are detachably connected, so anti-deformation disks with different insertion hole diameters can be selected according to long shaft workpieces with different diameters, so that the anti-deformation disk and the long shaft workpiece are well matched; Fourth point: the anti-deformation plate includes a lower boss, which is inserted into the support hole to facilitate alignment of the insertion hole and the support hole, so the operation is convenient; Therefore, the present invention can prevent the long shaft workpiece from being deformed along its axis during heat treatment and aging, and can ensure the heat treatment aging effect of the journal.

[0017] 2. In the anti-deformation device suitable for heat treatment aging of long-axis workpieces of the present invention, the number of the support columns is four, and two to three step plates are evenly distributed between two support columns. Support rods are connected to both ends of the step plates, and the other end of the support rods is connected to the support columns. Bottom support plates and top support plates are arranged at both ends of the support columns. When used, the four support columns symmetrically support the support disk, so that a stable support can be formed for the support disk, thereby supporting the anti-deformation disk stably; the step plates are used to support and fix two adjacent support columns, and the support rods are then used to strengthen the support and fixation of the step plates and support columns; the bottom support plate stabilizes the connection between the support column and the furnace bottom plate of the box-type trolley furnace, and the top support plate stabilizes the connection between the support column and the support disk. Therefore, the stability of the present invention is better.

[0018] 3. In the anti-deformation device for heat treatment aging of long-axis workpieces of the present invention, the angle between the support column and the horizontal plane is the support angle, and the support angle is 60 degrees. When used, the 60-degree support angle stabilizes the support effect of the support column, thereby forming a stable support for the support plate and the long-axis workpiece. Therefore, the support effect of the present invention is better.

[0019] 4. In the anti-deformation device for heat treatment aging of long shaft workpieces of the present invention, the anti-deformation disk is made of austenitic stainless steel, and the flatness of the anti-deformation disk is less than or equal to 0.1 mm. When used, the anti-deformation disk made of austenitic stainless steel has good heat resistance and will not deform under the high temperature environment of the box-type trolley furnace, so it will not cause the shaft neck to deform; the flatness of the anti-deformation disk is less than or equal to 0.1 mm, which will not affect the contact surface with the shaft neck. Therefore, the heat resistance of the present invention is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a schematic diagram of the application of the present invention.

[0022] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle bracket.

[0023] Figure 4 yes Figure 3 Top view of the .

[0024] Figure 5 yes Figure 1 Schematic diagram of the structure of the middle anti-deformation disk.

[0025] Figure 6 yes Figure 5 main view.

[0026] Figure 7 yes Figure 2Schematic diagram of the structure of the middle support plate.

[0027] Figure 8 yes Figure 2 Schematic diagram of the structure of medium and long shaft workpieces.

[0028] Fig. 9 yes Figure 1 Schematic diagram of the structure of the middle step plate.

[0029] Fig.10 It is a structural schematic diagram of the support angle in Example 3.

[0030] Fig.11 yes Figure 3 Schematic diagram of the structure of the middle support rod.

[0031] In the figure: anti-deformation disk 1, insertion hole 11, lower boss 12, bracket 2, support column 21, support disk 22, support hole 221, step plate 23, upper step plate 231, middle step plate 232, lower step plate 233, support rod 24, bottom support plate 3, top support plate 4, support angle 5, long axis workpiece 6, journal 7. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] See also Figure 1 — Fig.11 , an anti-deformation device suitable for heat treatment aging of long-axis workpieces, the device comprises an anti-deformation disk 1 and a bracket 2; The bracket 2 includes a plurality of support columns 21, the support columns 21 are symmetrically distributed along the center of the bracket 2, the top of the support column 21 is higher than the bottom of the support column 21, the top of the support column 21 is connected to the bottom of the support plate 22, the support plate 22 is cylindrical, and the middle of the support plate 22 is a support hole 221, and the support hole 221 is a through hole; The top of the support plate 22 is connected to the bottom of the anti-deformation plate 1 . The middle of the anti-deformation plate 1 is an insertion hole 11 . The insertion hole 11 is a through hole. The insertion hole 11 is connected to the support hole 221 .

[0034] The anti-deformation disk 1 is provided with a lower boss 12 along the outer periphery of the insertion hole 11 , and the outer surface of the lower boss 12 is connected to the inner surface of the support hole 221 .

[0035] There are four support columns 21 , the angle between two adjacent support columns 21 is a right angle, and step plates 23 are evenly distributed between two adjacent support columns 21 .

[0036] The step plate 23 includes an upper step plate 231, a middle step plate 232 and a lower step plate 233. The two ends of the upper step plate 231 are respectively connected to the tops of two adjacent support columns 21, the two ends of the middle step plate 232 are respectively connected to the middle parts of two adjacent support columns 21, and the two ends of the lower step plate 233 are respectively connected to the bottoms of two adjacent support columns 21.

[0037] One end of the step plate 23 close to the support column 21 is connected to one end of the support rod 24, and the other end of the support rod 24 is connected to one end of the support column 21 close to the step plate 23. The step plate 23, the support rod 24 and the support column 21 together form a triangular structure.

[0038] The bottom of the support column 21 is connected to the top of the bottom support plate 3 , and the bottom of the bottom support plate 3 is a planar structure.

[0039] The top of the support column 21 is connected to the bottom of the top support plate 4 . The top of the top support plate 4 is a planar structure. The top of the top support plate 4 is connected to the bottom of the support plate 22 .

[0040] The angle between the support column 21 and the horizontal plane is a support angle 5, and the support angle 5 is less than seventy-five degrees.

[0041] The support angle 5 is sixty degrees.

[0042] The anti-deformation disk 1 is made of austenitic stainless steel, and the flatness of the anti-deformation disk 1 is less than or equal to 0.1 mm.

[0043] The supplementary description of the present invention is as follows: The long-axis workpiece 6 described in the present invention refers to: the maximum outer diameter of the shaft of the long-axis workpiece 6 is greater than one hundred millimeters and less than two hundred and fifty millimeters, the shaft length of the long-axis workpiece 6 is greater than one thousand eight hundred millimeters and less than five thousand five hundred millimeters, one end of the long-axis workpiece 6 is provided with a journal 7, the flange diameter of the journal 7 is greater than two hundred millimeters and less than six hundred millimeters, and the straightness of the long-axis workpiece 6 in the length direction is required to be less than or equal to 0.1 millimeter; the material of the long-axis workpiece 6 is a nickel-based high-temperature alloy, and the long-axis workpiece 6 is heat-treated and aged in a box-type trolley furnace, and the heat treatment aging heating temperature is six hundred and fifty to seven hundred degrees Celsius. The thermal expansion of the long-axis workpiece 6 with a length of two thousand millimeters at this temperature reaches twenty millimeters. The long-axis workpiece 6 after thermal expansion does not meet the processing requirements, while the thermal expansion of the long-axis workpiece 6 under the action of the present invention is less than or equal to 0.1 millimeter, which meets the processing requirements.

[0044] Embodiment 1: See also Figure 1 — Fig.11, an anti-deformation device suitable for heat treatment aging of long-axis workpieces, the device includes an anti-deformation disk 1 and a bracket 2; the bracket 2 includes a plurality of support columns 21, the support columns 21 are symmetrically distributed along the center of the bracket 2, the top of the support column 21 is higher than the bottom of the support column 21, the top of the support column 21 is connected to the bottom of the support disk 22, the support disk 22 is cylindrical, the middle of the support disk 22 is a support hole 221, and the support hole 221 is a through hole; the top of the support disk 22 is connected to the bottom of the anti-deformation disk 1, the middle of the anti-deformation disk 1 is an insertion hole 11, the insertion hole 11 is a through hole, and the insertion hole 11 is connected to the support hole 221. The anti-deformation disk 1 is provided with a lower boss 12 along the outer periphery of the insertion hole 11, and the outer surface of the lower boss 12 is connected to the inner surface of the support hole 221.

[0045] When using, first select an anti-deformation disk 1 with a suitable diameter according to the diameter of the long-axis workpiece 6, then place the anti-deformation disk 1 on the top of the support disk 22, and then insert the lower boss 12 into the support hole 221, so that the outer surface of the lower boss 12 is connected to the inner surface of the support hole 221. At this time, the insertion hole 11 is connected to the support hole 221, and then the bracket 2 and the anti-deformation disk 1 are hoisted to the furnace bottom plate of the box-type trolley furnace. The furnace bottom plate should be intact and flat, and its surface must be ensured to have no arching or deformation. Then, the long-axis workpiece 6 is hoisted into the insertion hole 11 and the support hole 221 until the shaft neck 7 is connected to the surface of the anti-deformation disk 1. The above hoisting process should be done gently to prevent the long-axis workpiece 6 from colliding with the bracket 2 and the anti-deformation disk 1; then The box-type trolley furnace performs heat treatment and aging on the long-axis workpiece 6. During this process, upward stress is generated inside the long-axis workpiece 6, and the upward stress is offset by the gravity of the long-axis workpiece 6. Therefore, the long-axis workpiece 6 will not expand along its axis, and the long-axis workpiece 6 after heat treatment and aging meets the processing requirements; there is a space of at least fifteen millimeters between the insertion hole 11 and the journal 7, and hot air circulates in the space. The hot air performs heat treatment and aging on the part of the journal 7 located in the insertion hole 11, and the part where the journal 7 is connected to the outer surface of the anti-deformation disk 1 is heat-conducted by the anti-deformation disk 1. In the process, the temperature of this part reaches the heat treatment aging temperature through the uniform temperature insulation process, so the heat treatment aging effect at the journal 7 can be guaranteed.

[0046] Embodiment 2: The basic content is the same as that of Example 1, except that: See also Figure 1 — Fig.11The number of the support columns 21 is four, the angle between two adjacent support columns 21 is a right angle, and step plates 23 are evenly distributed between the two adjacent support columns 21. The step plates 23 include an upper step plate 231, a middle step plate 232 and a lower step plate 233. The two ends of the upper step plate 231 are respectively connected to the tops of the two adjacent support columns 21, the two ends of the middle step plate 232 are respectively connected to the middle of the two adjacent support columns 21, and the two ends of the lower step plate 233 are respectively connected to the bottoms of the two adjacent support columns 21. One end of the step plate 23 close to the support column 21 is connected to one end of the support rod 24, and the other end of the support rod 24 is connected to one end of the support column 21 close to the step plate 23. The step plate 23, the support rod 24 and the support column 21 are surrounded by a triangular structure. The bottom of the support column 21 is connected to the top of the bottom support plate 3, and the bottom of the bottom support plate 3 is a plane structure. The top of the support column 21 is connected to the bottom of the top support plate 4 . The top of the top support plate 4 is a planar structure. The top of the top support plate 4 is connected to the bottom of the support plate 22 .

[0047] When in use, the four support columns 21 provide support for the support plate 22 symmetrically along the center of the support plate 22, so the support for the support plate 22 is stable; two adjacent support columns 21 are fixed by the upper step plate 231, the middle step plate 232 and the lower step plate 233, so that the connection between the two adjacent support columns 21 is stable; the number of step plates 23 can be set as needed, each upper step plate 231 is connected to four support rods 24, and the other end of the support rod 24 is connected to the support column 21, each middle step plate 232 is connected to four support rods 24, and the other end of the support rod 24 is connected to the support column 21, and each lower step plate 233 is connected to two support rods 24, and the other end of the support rod 24 is connected to the support column 21. Therefore, the support rod 24 forms a support between the step plate 23 and the support column 21, and the support rod 24, the step plate 23 and the support column 21 form a triangular structure, and the triangular structure is relatively stable, so the support rod 24 can make the connection between the step plate 23 and the support column 21 stable, and the multiple support rods 24 on each step plate 23 are symmetrical to each other, so a better fixing effect can be formed on the step plate 23; a top support plate 4 is arranged on the top of the support column 21, and the top support plate 4 is a planar structure, and the top of the top support plate 4 is connected to the bottom of the support plate 22, so the support between the support column 21 and the support plate 22 is stable, and a bottom support plate 3 is arranged on the bottom of the support column 21, and the bottom support plate 3 is a planar structure, so the support column 21 is stably connected to the furnace bottom plate of the box-type trolley furnace.

[0048] Embodiment 3: The basic content is the same as that of Example 1, except that: See also Figure 1 — Fig.10The angle between the support column 21 and the horizontal plane is a support angle 5, and the support angle 5 is less than seventy-five degrees. The support angle 5 is sixty degrees.

[0049] When in use, the support angle 5 of the four support columns 21 is sixty degrees, that is, the angle between the support column 21 and the furnace bottom plate of the box-type trolley furnace is sixty degrees. At this time, the friction between the support column 21 and the furnace bottom plate is the largest, so the support effect of the support column 21 is stable; when the angle between the support column 21 and the furnace bottom plate is less than sixty degrees or greater than seventy-five degrees, the support stability of the support column 21 is reduced.

[0050] Embodiment 4: The basic content is the same as that of Example 1, except that: See also Figure 1 — Figure 6 The anti-deformation disk 1 is made of austenitic stainless steel, and the flatness of the anti-deformation disk 1 is less than or equal to 0.1 mm.

[0051] When used, the anti-deformation disk 1 made of austenitic stainless steel has good heat resistance and will not deform in the high temperature environment of the box-type trolley furnace, so the shaft neck 7 connected to the anti-deformation disk 1 will not deform; the anti-deformation disk 1 has a stable structure and can be used for long-term heat treatment aging of long-axis workpieces 6.

[0052] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. An anti-deformation device suitable for heat treatment aging of long shaft workpieces, characterized by: The device comprises an anti-deformation disk (1) and a bracket (2); The support (2) comprises a plurality of support columns (21), the support columns (21) being symmetrically distributed along the center of the support (2), the top of the support column (21) being higher than the bottom of the support column (21), the top of the support column (21) being connected to the bottom of a support plate (22), the support plate (22) being cylindrical, the middle of the support plate (22) being a support hole (221), and the support hole (221) being a through hole; The top of the support plate (22) is connected to the bottom of the anti-deformation plate (1), the middle of the anti-deformation plate (1) is an insertion hole (11), the insertion hole (11) is a through hole, and the insertion hole (11) is connected to the support hole (221).

2. The anti-deformation device suitable for heat treatment aging of long shaft workpieces according to claim 1, characterized in that: The anti-deformation disk (1) is provided with a lower boss (12) along the outer periphery of the insertion hole (11), and the outer surface of the lower boss (12) is connected to the inner surface of the support hole (221).

3. The anti-deformation device suitable for heat treatment aging of long shaft workpieces according to claim 1 or 2, characterized in that: The number of the support columns (21) is four, the angle between two adjacent support columns (21) is a right angle, and step plates (23) are evenly distributed between two adjacent support columns (21).

4. The anti-deformation device suitable for heat treatment aging of long shaft workpieces according to claim 3, characterized in that: The step plate (23) comprises an upper step plate (231), a middle step plate (232) and a lower step plate (233); the two ends of the upper step plate (231) are respectively connected to the tops of two adjacent support columns (21); the two ends of the middle step plate (232) are respectively connected to the middles of two adjacent support columns (21); and the two ends of the lower step plate (233) are respectively connected to the bottoms of two adjacent support columns (21).

5. The anti-deformation device suitable for heat treatment aging of long shaft workpieces according to claim 4, characterized in that: One end of the step plate (23) close to the support column (21) is connected to one end of the support rod (24), and the other end of the support rod (24) is connected to one end of the support column (21) close to the step plate (23); the step plate (23), the support rod (24) and the support column (21) together form a triangular structure.

6. The anti-deformation device suitable for heat treatment aging of long shaft workpieces according to claim 5, characterized in that: The bottom of the support column (21) is connected to the top of the bottom support plate (3), and the bottom of the bottom support plate (3) is a planar structure.

7. The anti-deformation device suitable for heat treatment aging of long shaft workpieces according to claim 6, characterized in that: The top of the support column (21) is connected to the bottom of the top support plate (4); the top of the top support plate (4) is a planar structure; and the top of the top support plate (4) is connected to the bottom of the support plate (22).

8. The anti-deformation device suitable for heat treatment aging of long shaft workpieces according to claim 1 or 2, characterized in that: The angle between the support column (21) and the horizontal plane is a support angle (5), and the support angle (5) is less than seventy-five degrees.

9. The anti-deformation device suitable for heat treatment aging of long shaft workpieces according to claim 8, characterized in that: The support angle (5) is sixty degrees.

10. The anti-deformation device suitable for heat treatment aging of long shaft workpieces according to claim 1 or 2, characterized in that: The anti-deformation disk (1) is made of austenitic stainless steel, and the flatness of the anti-deformation disk (1) is less than or equal to 0.1 millimeter.

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