Pipe heat treatment tooling

Abstract

The utility model belongs to heat treatment frock technical field relates to a pipe heat treatment frock, including rectangle bracket and refractory brick, the bottom of rectangle bracket is equipped with a plurality of supporting legs, the both sides of rectangle bracket top are equipped with guardrail, the outside of guardrail is equipped with the hook, the upper portion of rectangle bracket is equipped with V type support part, V type support part includes the limit slot on two sides inclined plane respectively and the limit slot in the bottom, refractory brick installs in limit slot in a detachable mode. The utility model discloses through the limit slot setting of V type support part both sides and bottom multiple refractory brick support points of direct contact with pipe, has increased the contact area, has dispersed the pressure of pipe deadweight generation, avoided the heat treatment deformation caused by local stress concentration. And the relative soft quality of refractory brick material, will not knock or scratch the precise copper alloy pipe surface in the process of loading and unloading and heat treatment, protected the integrity of workpiece.

Description

Technical Field

[0001] This utility model relates to a heat treatment fixture for pipes, belonging to the technical field of heat treatment fixtures. Background Technology

[0002] In the field of copper alloy processing, most production processes require heat treatment steps such as solution treatment, aging, or annealing. During transport and heat treatment, the pipes need to be kept in a fixed position to ensure production safety and the stability of the heat treatment process.

[0003] In common production sites, pipes are often laid flat on the bottom lining plate of a heat treatment furnace and then secured with shims on both sides. This method prevents the pipes from rolling, but it is inconvenient for hoisting. The parts of the pipes in contact with the shims are prone to squeezing or bumping against each other. The temperature of the shims and the bottom lining plate of the heat treatment furnace is higher than that of other parts of the furnace, and the parts of the pipes in contact with them are prone to overheating. This results in differences in the performance of the pipes at different locations, ultimately affecting the service life of the product.

[0004] Existing similar tooling is mostly steel frame structure. During the heat treatment process, because the thermal conductivity of the steel frame is lower than that of the copper tube, the temperature rises slowly. This causes the temperature rise rate at the contact point between the copper tube and the steel frame to be slower than that of the copper tube body. When the heat treatment process ends and the temperature drops, the cooling rate at the contact point is lower than that of the copper tube body. This directly leads to a difference in the heating temperature and time at the copper-steel contact point compared to the body. Consequently, the microstructure, phase composition, physical properties, and mechanical properties at the contact point differ from those of the copper tube body, ultimately affecting the overall performance of the copper tube. Utility Model Content

[0005] The purpose of this utility model is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0006] The technical solution provided by this utility model is as follows: A heat treatment fixture for pipes includes a rectangular bracket and refractory bricks. The bottom of the rectangular bracket is provided with multiple legs, and the upper two sides of the rectangular bracket are provided with guardrails. The outer side of the guardrails is provided with hooks. The upper part of the rectangular bracket is provided with a V-shaped support. The V-shaped support includes limiting grooves located on the two inclined surfaces and a limiting groove located at the bottom. The refractory bricks are installed in the limiting grooves in a detachable manner.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the upper part of the rectangular bracket is provided with multiple rows of V-shaped support parts, each row including at least two V-shaped support parts, and the two V-shaped support parts in the same row are used to jointly support a pipe.

[0009] The advantage of adopting the above-mentioned further solution is that a single tooling can stably place multiple pipes at the same time, thus making full use of the lateral space.

[0010] Furthermore, the rectangular bracket has a multi-layer structure, including at least one lower bracket and at least one upper bracket, with the upper bracket mounted above the lower bracket via guardrails on both sides.

[0011] The beneficial effect of adopting the above-mentioned further solution is that it realizes full utilization of the vertical space, improves the space utilization efficiency in the heat treatment furnace, can process more pipes in a limited space, and improves production efficiency.

[0012] Furthermore, the interlayer spacing between two adjacent rectangular brackets is greater than the diameter of the pipe to be processed.

[0013] The beneficial effects of adopting the above-mentioned further solution are that it ensures sufficient gap between the upper and lower layers of pipes, avoids the pipes from squeezing each other due to thermal expansion during heat treatment, and also facilitates the hoisting and removal of the pipes, further improving the safety and efficiency of production.

[0014] Furthermore, the support leg is a hollow tubular structure.

[0015] The beneficial effects of adopting the above-mentioned further solution are that the use of hollow tubular support legs can effectively reduce the overall weight of the tooling, making it easier to handle and install. At the same time, the hollow structure also has a certain heat insulation effect, which can reduce the heat exchange between the bottom of the tooling and the bottom of the heat treatment furnace, and reduce the impact of bottom overheating on the tooling and pipes.

[0016] Furthermore, the refractory bricks are made of silicon carbide.

[0017] The beneficial effects of adopting the above-mentioned further solutions are that refractory bricks made of silicon carbide have excellent high-temperature resistance, can maintain stable physical and chemical properties under high-temperature heat treatment environments, and are not easily deformed or damaged. At the same time, silicon carbide also has good thermal conductivity and thermal stability, which helps to achieve uniform temperature distribution during heat treatment.

[0018] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: This utility model uses limiting grooves on both sides and the bottom of the V-shaped support to set multiple refractory brick support points that directly contact the pipe, increasing the contact area, dispersing the pressure generated by the pipe's own weight, and avoiding heat treatment deformation caused by localized stress concentration. Simultaneously, the refractory brick material is relatively soft, preventing bumps or scratches on the surface of the precision copper alloy pipe during loading, unloading, and heat treatment, thus protecting the integrity of the workpiece. The refractory bricks are made of a material with excellent thermal conductivity, ensuring that the temperature of the refractory bricks remains consistent with the furnace ambient temperature, guaranteeing uniform heating of the copper pipe placed on the V-shaped support, eliminating localized temperature differences caused by cold spots in the tooling, and preventing uneven heating of the heat-treated workpiece. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the heat treatment fixture for pipes according to this utility model; Figure 2 This is a schematic diagram of the rectangular bracket of this utility model, which has a two-layer structure.

[0021] In the diagram: 1. Refractory brick; 2. Hook; 3. Support leg; 4. Limiting groove; 5. Pipe; 6. Rectangular bracket; 7. Guardrail. Detailed Implementation

[0022] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the objects described and do not imply any priority in order or any specific technical meaning. Furthermore, the concepts of "connection" and "linkage" mentioned in this application, unless otherwise specified, are considered to include both direct connection (linkage) and indirect connection (linkage).

[0023] When interpreting the description of this application, it should be clarified that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating directions or positional relationships, are based on the perspective and layout shown in the accompanying drawings. They are intended to facilitate explanation and simplify the description process, and are not absolute limitations on the actual location, construction method, or operating mode of the described device or element. Therefore, these terms should not be construed as restrictive interpretations of the content of this application.

[0024] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0025] like Figure 1 As shown, the technical solution provided by this utility model is as follows: A heat treatment fixture for pipe 5 includes a rectangular bracket 6 and a refractory brick 1 piece. The bottom of the rectangular bracket 6 is provided with multiple support legs 3. The upper sides of the rectangular bracket 6 are provided with guardrails 7. The outer side of the guardrails 7 is provided with hooks 2. The upper part of the rectangular bracket 6 is provided with a V-shaped support part. The V-shaped support part includes a limiting groove 4 located on the two inclined surfaces and a limiting groove 4 located at the bottom. The refractory brick 1 piece is detachably installed in the limiting groove 4.

[0026] The upper part of the rectangular bracket 6 is provided with multiple rows of V-shaped support parts, each row including at least two V-shaped support parts. The two V-shaped support parts in the same row are used to jointly support a copper alloy tube 5. A single fixture can stably place multiple tubes 5 at the same time, realizing full utilization of lateral space.

[0027] The rectangular bracket 6 has a multi-layer structure, including at least one lower bracket and at least one upper bracket. The upper bracket is mounted above the lower bracket via guardrails 7 on both sides.

[0028] like Figure 2 As shown, the two-layer structure of the rectangular bracket 6 and its specific construction are illustrated. This design fully utilizes the longitudinal space, improving the space utilization efficiency within the heat treatment furnace. More copper alloy tubes 5 can be processed within a limited space, thus increasing production efficiency. The spacing between two adjacent rectangular bracket layers 6 is greater than the diameter of the copper alloy tubes 5 to be processed. This ensures sufficient clearance between the upper and lower layers of copper alloy tubes 5, preventing the tubes 5 from squeezing each other due to thermal expansion during heat treatment. It also facilitates the hoisting and removal of the tubes 5, further improving production safety and efficiency.

[0029] The support leg 3 is a hollow tubular structure. The hollow tubular structure of the support leg 3 can effectively reduce the overall weight of the tooling, making it easier to handle and install. At the same time, the hollow structure also has a certain heat insulation effect, which can reduce the heat exchange between the bottom of the tooling and the bottom of the heat treatment furnace, and reduce the impact of bottom overheating on the tooling and the pipe 5.

[0030] The refractory brick is made of silicon carbide. A refractory brick made of silicon carbide has excellent high-temperature resistance, maintaining stable physical and chemical properties under high-temperature heat treatment environments, and is not easily deformed or damaged. At the same time, silicon carbide also has good thermal conductivity and thermal stability, which helps to achieve uniform temperature distribution during heat treatment.

[0031] The working method of the heat treatment fixture for the pipe 5 of this utility model is as follows: First, refractory brick 1 is pre-installed in each limiting groove 4 of the rectangular bracket 6 to complete the preparation of the fixture. Then, the copper alloy pipe 5 to be treated is hoisted and placed stably on the V-shaped support composed of refractory brick 1. When the heat treatment furnace reaches the preset process temperature, the hook 2 on the outside of the fixture guardrail 7 is connected by the hoisting equipment to stably hoist the entire fixture carrying the pipe 5 into the furnace for heat treatment. After the heat treatment process is completed, the fixture and the pipe 5 are hoisted out of the heat treatment furnace together by the hoisting equipment and transferred to a designated area for cooling.

[0032] This invention utilizes limiting grooves 4 on both sides and the bottom of the V-shaped support section to provide multiple support points for refractory bricks 1 that directly contact the pipe 5. This increases the contact area, disperses the pressure generated by the weight of the pipe 5, and avoids heat treatment deformation caused by localized stress concentration. Simultaneously, the relatively soft material of the refractory bricks 1 prevents damage to the delicate copper alloy pipe 5 surface during loading, unloading, and heat treatment, protecting the integrity of the workpiece. The refractory bricks 1 are made of a material with excellent thermal conductivity, ensuring their temperature remains consistent with the furnace environment temperature. This guarantees uniform heating of the copper pipe placed on the V-shaped support section, eliminating localized temperature differences caused by cold spots in the tooling and preventing uneven heating of the heat-treated workpiece.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., 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 heat treatment fixture for pipes, characterized in that, The rectangular bracket (6) and the refractory brick (1) are provided. The bottom of the rectangular bracket (6) is provided with multiple legs (3). The upper sides of the rectangular bracket (6) are provided with guardrails (7). The outer side of the guardrails (7) is provided with hooks (2). The upper part of the rectangular bracket (6) is provided with a V-shaped support. The V-shaped support includes a limiting groove (4) located on the two inclined surfaces and a limiting groove (4) located at the bottom. The refractory brick (1) is installed in the limiting groove (4) in a detachable manner.

2. The pipe heat treatment fixture according to claim 1, characterized in that, The upper part of the rectangular bracket (6) is provided with multiple rows of V-shaped support parts, each row including at least two V-shaped support parts, and the two V-shaped support parts in the same row are used to jointly support a pipe (5).

3. The pipe heat treatment fixture according to claim 2, characterized in that, The rectangular bracket (6) has a multi-layer structure, including at least one lower bracket and at least one upper bracket. The upper bracket is mounted above the lower bracket by guardrails (7) on both sides.

4. The pipe heat treatment fixture according to claim 3, characterized in that, The spacing between two adjacent rectangular brackets (6) is greater than the diameter of the pipe (5) to be processed.

5. The pipe heat treatment fixture according to any one of claims 1 to 4, characterized in that, The support (3) is a hollow tubular structure.

6. The pipe heat treatment fixture according to claim 1, characterized in that, The refractory brick (1) is made of silicon carbide.

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