A heat treatment device for preventing deformation of metal castings

Abstract

This utility model discloses a heat treatment device for preventing deformation of metal castings, belonging to the field of heat treatment technology for metal castings. The key technical points include a metal heat treatment chamber body with an internal support mechanism. This solves the problem that some existing heat treatment devices for preventing deformation of metal castings require tools to remove and transfer the hot metal castings after heat treatment. The castings may soften due to high temperatures, have smooth surfaces, or complex shapes, leading to unstable tool clamping and a risk of slippage, causing damage to the metal castings or injury to personnel. Furthermore, the support structure for the metal castings retains a high residual temperature. During continuous heat treatment, when the cold metal casting to be treated comes into contact with the high-temperature support structure, instantaneous thermal stress is generated due to localized sudden heating, easily disrupting the original stress balance of the metal castings and even causing micro-deformation.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology for metal castings, and in particular to a heat treatment device for preventing deformation of metal castings. Background Technology

[0002] Deformation-resistant heat treatment for metal castings is a specialized heat treatment process designed to address the deformation problems that easily occur in metal castings during production, processing, and use. Its core objective is to eliminate residual stress inside the casting while avoiding new deformations caused by improper treatment through scientific control of temperature changes, stress release, and microstructure adjustment, ultimately ensuring the dimensional accuracy, shape stability, and mechanical properties of the casting.

[0003] In addition to its positive effects, existing heat treatment methods inevitably cause deformation during the process. Excessive deformation during heat treatment can easily lead to scrapping.

[0004] The existing patent (publication number: CN216764966U) discloses a heat treatment device for preventing deformation of metal castings. The present invention relates to a heat treatment device for preventing deformation of metal castings, which belongs to the field of heat treatment technology. The support ring and the pressing ring clamp the workpiece to be heat treated and fix the workpiece around its perimeter to reduce the possibility of deformation of the workpiece.

[0005] To address the aforementioned issues, existing patents offer solutions. However, some existing heat treatment devices for preventing deformation of metal castings require tools to remove and transfer the heated metal castings after heat treatment. Due to the high temperature, the castings may soften, become smooth, or have complex shapes, making it difficult for the tools to hold them securely and posing a risk of slippage, which could damage the metal castings or injure personnel. Furthermore, the structure supporting the metal castings also retains a high residual temperature. During continuous heat treatment of the metal castings, when the cold metal castings come into contact with the high-temperature supporting structure, the sudden local heating can generate instantaneous thermal stress, which can easily disrupt the original stress balance of the metal castings and even cause micro-deformation.

[0006] To address this, a heat treatment device for preventing deformation of metal castings is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a heat treatment device for preventing deformation of metal castings. This device addresses the problem that some existing heat treatment devices for preventing deformation of metal castings require tools to remove and transfer the hot metal castings after heat treatment. The castings may soften due to high temperatures, have smooth surfaces, or complex shapes, leading to unstable tool clamping and a risk of slippage, potentially causing damage to the metal castings or injury to personnel. Furthermore, the structure supporting the metal castings retains a high residual temperature. During continuous heat treatment of the metal castings, when the cold metal castings come into contact with the high-temperature supporting structure, sudden local heating generates instantaneous thermal stress, which can easily disrupt the original stress balance of the metal castings and even cause micro-deformation.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a heat treatment device for preventing deformation of metal castings, comprising a metal heat treatment box body, a bearing mechanism provided inside the metal heat treatment box body, a limit plate provided on the front side of the metal heat treatment box body, and a pressing mechanism provided on the top of the bearing mechanism.

[0009] The supporting mechanism includes a cover plate, two casters, two support frames, a base plate, support blocks, and rollers. The rear side of the cover plate contacts the front side of the metal heat treatment chamber body. The casters are rotatably connected to both sides of the bottom front side of the cover plate. The front side of the base plate is fixedly connected to the rear side of the cover plate. The bottom of the base plate is in movable contact with the bottom of the inner wall of the metal heat treatment chamber body. The two sides of the base plate are in movable contact with the two sides of the inner wall of the metal heat treatment chamber body. The two support blocks are fixedly connected to both sides of the rear side of the base plate. The rollers are rotatably connected to the bottom of the support blocks. The bottom of the support frame contacts the top of the base plate.

[0010] Preferably, the pressing mechanism includes a rotating rod, a fixed plate, and a pressure plate. The rotating rod is threadedly connected to the inside of the fixed plate, the front side of the fixed plate contacts the rear side of the cover plate, and the pressure plate is rotatably connected to the bottom of the rotating rod.

[0011] Preferably, a locking block is fixedly connected to the rear side of the support frame, and limiting cards that cooperate with the locking block are fixedly connected to the top and bottom of both sides of the rear side of the cover plate, and the locking block is movably inserted into the inside of the limiting card.

[0012] Preferably, the surface of the support frame is fixedly connected with hooks, and the number of hooks is several and they are evenly distributed on the surface of the support frame.

[0013] Preferably, the bottom of the inner wall of the metal heat treatment box body is provided with through slots on both sides, and the support block is movably inserted into the inside of the through slots.

[0014] Preferably, both sides of the metal heat treatment box body are fixedly connected to limit frames, the limit plate is movably engaged inside the limit frame, and pull rings are fixedly connected to both sides of the top of the limit plate.

[0015] Preferably, a handle is fixedly connected to the front side of the cover plate.

[0016] Preferably, the cover plate, bottom plate, pull ring, limiting plate and handle are all made of ceramic fiber material.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application achieves heat insulation and anti-scalding by setting up a load-bearing mechanism, using ceramic fiber material cover plates, bottom plates and handles. Universal wheels and rollers work together to facilitate pushing and pulling the cover plates and bottom plates. The two sides of the bottom plate and the support blocks work with the through groove to ensure smooth entry and exit of the box. The clamps of the load-bearing frame are inserted and fixed with the limit clamps of the cover plate. The hooks can hang metal castings. Multiple sets of bottom plates and cover plates can be used alternately to avoid the residual heat affecting the local contact of the metal castings to be heat-treated and generating instantaneous thermal stress. There is no need to use tools to transfer high-temperature metal castings. They can be moved as a whole for cooling. This solves the problems of unstable transfer and clamping of existing metal castings after heat treatment and easy deformation of cold castings when exposed to high temperature load-bearing structures, thus improving safety and continuity.

[0019] 2. This application sets up a pressing mechanism, in which the rotating rod is threadedly connected to the fixed plate. Rotating the rotating rod can drive the pressure plate to press the stacked plate-shaped metal castings, so that the plate-shaped metal castings are pressed together, effectively avoiding deformation exceeding the tolerance due to thermal stress during heat treatment, enhancing the anti-deformation effect of the plate-shaped metal castings, and adapting to the heat treatment requirements of different types of metal castings. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the heat treatment device for preventing deformation of metal castings according to this utility model.

[0021] Figure 2 This is a three-dimensional structural diagram of the interior of the metal heat treatment box body in this utility model;

[0022] Figure 3 This is a three-dimensional connection diagram of the load-bearing mechanism in this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the rear side of the cover plate in this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the front side of the support frame in this utility model;

[0025] Figure 6 This is a three-dimensional connection diagram of the limiting plate and the pull ring in this utility model.

[0026] In the diagram, 1. Metal heat treatment chamber body; 2. Bearing mechanism; 201. Cover plate; 202. Casters; 203. Bearing frame; 204. Base plate; 205. Support block; 206. Roller; 3. Limiting plate; 4. Handle; 5. Limiting frame; 6. Through groove; 7. Pressing mechanism; 701. Rotating rod; 702. Fixing plate; 703. Pressing plate; 8. Limiting clip; 9. Clip block; 10. Hook; 11. Pull ring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-6 The present invention provides the following technical solution:

[0029] A heat treatment device for preventing deformation of metal castings includes a metal heat treatment box body 1, a bearing mechanism 2 is provided inside the metal heat treatment box body 1, a limit plate 3 is provided on the front side of the metal heat treatment box body 1, and a pressing mechanism 7 is provided on the top of the bearing mechanism 2.

[0030] The supporting mechanism 2 includes a cover plate 201, two casters 202, two support frames 203, a base plate 204, support blocks 205, and rollers 206. The rear side of the cover plate 201 contacts the front side of the metal heat treatment chamber body 1. The casters 202 are rotatably connected to both sides of the bottom front side of the cover plate 201. The front side of the base plate 204 is fixedly connected to the rear side of the cover plate 201. The bottom of the base plate 204 is in movable contact with the bottom of the inner wall of the metal heat treatment chamber body 1. The two sides of the base plate 204 are in movable contact with the two sides of the inner wall of the metal heat treatment chamber body 1. The two support blocks 205 are respectively fixedly connected to the two sides of the rear side of the base plate 204. The rollers 206 are rotatably connected to the bottom of the support blocks 205. The bottom of the support frame 203 contacts the top of the base plate 204.

[0031] In this embodiment: the ceramic fiber cover plate 201 and bottom plate 204 are pulled out from the metal heat treatment chamber body 1 by the handle 4. Their heat insulation and anti-scalding properties prevent burns to the operator. The suspended metal casting is hung on the hook 10 of the support frame 203. After the plate-shaped metal casting is stacked on the bottom plate 204, the rotating rod 701 is rotated to make the pressure plate 703 press the metal casting to prevent deformation from exceeding the tolerance during heat treatment. The support frame 203 locking block 9 is inserted into the cover plate 201 limiting card 8 for fixation. The cover plate 201 and bottom plate 204 are pushed into the chamber. The support block 205 guides in the through groove 6. The limiting plate 3 is locked into the limiting frame 5 to fix the cover plate 201. After heat treatment, the ceramic fiber pull ring 11 is pulled to remove the limiting plate 3. The handle 4 is pulled out to remove the cover plate 201 and bottom plate 204. The metal casting can be directly transferred to the external cooling area for cooling. The base plate 204 and cover plate 201 are used alternately to ensure that the support frame 203, hook 10 and pressure plate 703 are in a cooled state when reused, improving safety and convenience. This solves the problem that some existing equipment for heat treatment of metal castings to prevent deformation requires tools to remove and transfer the hot metal castings after heat treatment. The castings may soften due to high temperature, have a smooth surface or complex shape, which may cause the tools to be unstable and slip, resulting in damage to the metal castings or injury to personnel. In addition, the structure supporting the metal castings also has a high residual temperature. When the cold metal castings to be heat treated come into contact with the high temperature supporting structure during continuous heat treatment, the instantaneous thermal stress generated by the sudden local heating can easily disrupt the original stress balance of the metal castings and even cause micro-deformation.

[0032] Specifically, such as Figure 4 As shown, the pressing mechanism 7 includes a rotating rod 701, a fixed plate 702, and a pressing plate 703. The rotating rod 701 is threadedly connected to the inside of the fixed plate 702. The front side of the fixed plate 702 contacts the rear side of the cover plate 201. The pressing plate 703 is rotatably connected to the bottom of the rotating rod 701.

[0033] Specifically, such as Figure 4 and Figure 5 As shown, a locking block 9 is fixedly connected to the rear side of the support frame 203, and a limiting card 8 that works in conjunction with the locking block 9 is fixedly connected to the top and bottom of both sides of the rear side of the cover plate 201. The locking block 9 is movably inserted into the inside of the limiting card 8.

[0034] Specifically, such as Figure 5 As shown, hooks 10 are fixedly connected to the surface of the support frame 203. The number of hooks 10 is several and they are evenly distributed on the surface of the support frame 203.

[0035] In this embodiment: the pressing mechanism 7 is threadedly engaged with the fixed plate 702 via the rotating rod 701, which drives the pressing plate 703 to press the plate-shaped metal casting to place it for heat treatment if the deformation exceeds the tolerance. The clamping block 9 of the support frame 203 is inserted into the limiting clamp 8 of the cover plate 201 to achieve a stable connection. The hooks 10 evenly distributed on the surface of the support frame 203 can suspend the casting, which can be adapted to the heat treatment requirements of different types of metal castings.

[0036] Specifically, such as Figure 2 and Figure 3 As shown, through slots 6 are provided on both sides of the bottom of the inner wall of the metal heat treatment box body 1, and the support block 205 is movably inserted into the inside of the through slot 6.

[0037] Specifically, such as Figure 2 and Figure 6 As shown, the metal heat treatment box body 1 has a limit frame 5 fixedly connected to both sides, the limit plate 3 is movably snapped into the inside of the limit frame 5, and pull rings 11 are fixedly connected to both sides of the top of the limit plate 3.

[0038] In this embodiment: the through groove 6 of the metal heat treatment box body 1 cooperates with the support block 205 to guide the movement of the bottom plate 204 and ensure smooth entry and exit. The limiting frame 5 and the limiting plate 3 are locked together to fix the cover plate 201 to prevent accidental slippage during heat treatment. The pull ring 11 facilitates the taking and placing of the limiting plate 3, enhancing operational stability and safety.

[0039] Specifically, such as Figure 3 As shown, a handle 4 is fixedly connected to the front side of the cover plate 201.

[0040] Specifically, such as Figure 3 and Figure 6 As shown, the cover plate 201, the bottom plate 204, the pull ring 11, the limiting plate 3, and the handle 4 are all made of ceramic fiber material.

[0041] In this embodiment, the handle 4 on the front side of the cover plate 201 facilitates pushing and pulling the load-bearing mechanism 2. The cover plate 201, the bottom plate 204, the pull ring 11, the limiting plate 3 and the handle 4 are made of ceramic fiber material, which has good heat insulation and anti-scalding performance, avoids burns to operators and improves operational safety.

[0042] Working principle: First, the cover plate 201 and base plate 204, made of ceramic fiber material, are pulled out from inside the metal heat treatment chamber body 1 using the handle 4. The rollers 206 at the bottom of the base plate 204 and the casters 202 at the bottom of the cover plate 201 allow for easy pulling. The ceramic fiber material cover plate 201, base plate 204, and handle 4 provide good heat insulation and prevent burns to operators. When heat treating metal castings, if the casting is suspendable, it can be hung on the evenly distributed hooks 10 on the surface of the support frame 203. If the casting is plate-shaped, it is placed on top of the base plate 204 and stacked. Then, the rotating rod 701 inside the fixed plate 702 of the pressing mechanism 7 is rotated. The pressure plate 703, connected to the bottom of the rotating rod 701, moves downward and presses the plate-shaped metal casting, pressing the plate-shaped metal casting together to prevent excessive deformation during heat treatment. The locking block 9 on the rear side of the support frame 203 is movably inserted into the limiting card 8 on the rear side of the cover plate 201, realizing the connection between the support frame 203 and the cover plate 201. Then, the cover plate 201 and the bottom plate 204 are pushed into the metal heat treatment box body 1 together by the handle 4. At this time, the two sides of the bottom plate 204 are in movable contact with the two sides of the inner wall of the metal heat treatment box body 1, and the bottom of the bottom plate 204 is in movable contact with the bottom of the inner wall of the metal heat treatment box body 1. The support block 205 is movably inserted into the through groove 6 on both sides of the bottom of the inner wall of the metal heat treatment box body 1, guiding the movement of the bottom plate 204. The function is to, after being pushed in, engage the limiting plate 3 with the limiting brackets 5 on both sides of the metal heat treatment chamber body 1, thereby limiting and fixing the cover plate 201 and preventing it from accidentally sliding out during the heat treatment process. After the heat treatment is completed, the limiting plate 3 is removed from the limiting bracket 5 by pulling the pull ring 11 made of ceramic fiber material upwards. The pull ring 11 made of ceramic fiber material can reduce heat absorption and is easy to pull directly after wearing protective gear. Then, the cover plate 201 and the bottom plate 204 are pulled out by the handle 4. Since the cover plate 201 and the bottom plate 204 are also made of ceramic fiber material, they can effectively insulate heat. At this time, the handle 4 can be pulled directly while wearing protective gear, causing the caster wheel 202 and the roller 206 to rotate, transferring the heat-treated metal casting to the outside. The system features a cooling area for heat treatment, eliminating the need for tools to transfer high-temperature metal castings, thus improving safety and convenience. Simultaneously, one or more sets of base plates 204 and cover plates 201, free of residual heat, can be replaced. The metal castings requiring heat treatment are placed in the manner described above and then pushed into the metal heat treatment chamber 1 for heat treatment. By alternating between two or more sets of base plates 204 and cover plates 201, the support frame 203, hooks 10, and pressure plate 703 are ensured to be cooled before reuse, preventing residual heat from affecting the castings or causing operational inconvenience. This solves the problem of existing heat treatment equipment for preventing deformation of metal castings, which requires tools to remove and transfer the heated castings after heat treatment.Castings may soften at high temperatures, have smooth surfaces, or complex shapes, leading to unstable tool clamping and a risk of slippage. This can damage the metal casting or injure personnel. Furthermore, the structure supporting the metal casting retains significant residual heat. During continuous heat treatment, the contact between the cold casting and the high-temperature load-bearing structure can cause instantaneous thermal stress due to localized rapid heating, easily disrupting the original stress balance and even causing micro-deformation. It should be noted that the metal heat treatment chamber body 1 utilizes existing, published, and mature technology, and is powered by an external power source; its basic mechanism will not be elaborated upon here.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A metal casting deformation prevention heat treatment apparatus comprising a metal heat treatment case body (1), characterized in that: The metal heat treatment box body (1) is provided with a bearing mechanism (2) inside, a limiting plate (3) is provided on the front side of the metal heat treatment box body (1), and a pressing mechanism (7) is provided on the top of the bearing mechanism (2). The supporting mechanism (2) includes a cover plate (201), two casters (202), two support frames (203), a base plate (204), support blocks (205), and rollers (206). The rear side of the cover plate (201) is in contact with the front side of the metal heat treatment chamber body (1). The casters (202) are rotatably connected to both sides of the bottom front side of the cover plate (201). The front side of the base plate (204) is fixedly connected to the rear side of the cover plate (201). The bottom of the base plate (204) is in movable contact with the bottom of the inner wall of the metal heat treatment chamber body (1). The two sides of the base plate (204) are in movable contact with the two sides of the inner wall of the metal heat treatment chamber body (1). The two support blocks (205) are fixedly connected to the two sides of the rear side of the base plate (204). The rollers (206) are rotatably connected to the bottom of the support blocks (205). The bottom of the support frame (203) is in contact with the top of the base plate (204).

2. The heat treatment device for preventing deformation of metal castings according to claim 1, characterized in that: The pressing mechanism (7) includes a rotating rod (701), a fixed plate (702), and a pressure plate (703). The rotating rod (701) is threadedly connected to the inside of the fixed plate (702). The front side of the fixed plate (702) contacts the rear side of the cover plate (201). The pressure plate (703) is rotatably connected to the bottom of the rotating rod (701).

3. The heat treatment device for preventing deformation of metal castings according to claim 1, characterized in that: The rear side of the support frame (203) is fixedly connected to a locking block (9), and the top and bottom of the rear sides of the cover plate (201) are fixedly connected to a limiting card (8) that works in conjunction with the locking block (9). The locking block (9) is movably inserted into the inside of the limiting card (8).

4. The heat treatment device for preventing deformation of metal castings according to claim 1, characterized in that: The surface of the support frame (203) is fixedly connected with hooks (10), and the number of hooks (10) is several and they are evenly distributed on the surface of the support frame (203).

5. The heat treatment device for preventing deformation of metal castings according to claim 1, characterized in that: The metal heat treatment box body (1) has through slots (6) on both sides of the bottom of the inner wall, and the support block (205) is movably inserted into the inside of the through slot (6).

6. The heat treatment device for preventing deformation of metal castings according to claim 1, characterized in that: The metal heat treatment box body (1) is fixedly connected to both sides of the limiting frame (5), the limiting plate (3) is movably snapped into the inside of the limiting frame (5), and the top of the limiting plate (3) is fixedly connected to both sides of the limiting frame (5). Pull rings (11) are fixedly connected to both sides of the top of the limiting plate (3).

7. The heat treatment device for preventing deformation of metal castings according to claim 6, characterized in that: A handle (4) is fixedly connected to the front side of the cover plate (201).

8. The heat treatment device for preventing deformation of metal castings according to claim 7, characterized in that: The cover plate (201), bottom plate (204), pull ring (11), limiting plate (3) and handle (4) are all made of ceramic fiber material.

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