Welding residual stress eliminating device

Abstract

The utility model discloses a welding residual stress eliminating device which comprises a main body and a frame body, the main body is arranged on the inner side of the frame body, clamping devices are installed on the surfaces of the two sides of the main body, side plates are installed on the surfaces of the two sides of the lower end of the main body, and heating assemblies are arranged on the side plates and the inner wall of the main body. One end of the heating assembly penetrates through the main body and is connected with a heating pipe connector, the heating pipe connector extends to the outside of the main body, heat insulation cotton is arranged in the main body, and the main body can be fixedly clamped on the surface of the frame body through two sets of clamping devices; meanwhile, deformation and displacement cannot occur in the heating and cooling processes, so that the purpose of eliminating welding residual stress is achieved, then the second heating pipe and the first heating pipe are started to heat the welding position, and the welding position can be heated more uniformly through the arranged side plate and the second heating pipe.

Description

Technical Field

[0001] This utility model relates to the field of exhaust device technology, specifically a welding residual stress relief device. Background Technology

[0002] After the frame is welded, residual stress will be generated inside the frame due to uneven local heating and cooling during the welding process. The presence of residual stress will affect the dimensional stability, mechanical properties and fatigue life of the frame. At present, there are many methods to eliminate welding residual stress, among which annealing is a commonly used and effective method.

[0003] Traditionally, stress relief is typically achieved through overall annealing after welding of the frame. However, this process suffers from drawbacks such as high energy consumption, low efficiency, and large equipment size. Furthermore, during the annealing process, without suitable fixtures to fix and support the frame, the frame may deform due to its own weight and thermal deformation during heating, failing to achieve the desired stress relief effect. Therefore, a welding residual stress relief device is proposed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a welding residual stress relief device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a welding residual stress relief device, comprising a main body and a frame, wherein the main body is disposed on the inner side of the frame, clamping devices are installed on both sides of the main body, side plates are installed on the lower two sides of the main body, heating components are disposed on the side plates and the inner wall of the main body, one end of the heating component penetrates the main body and is connected to a heating pipe connector, the heating pipe connector extends to the outside of the main body, and heat insulation cotton is disposed inside the main body.

[0006] Preferably, the clamping device includes a bidirectional threaded rod, a support plate, a slide groove, a clamping plate, and a knob. The support plate is installed on the surface of the main body, the slide groove is formed on the lower surface of the support plate, the bidirectional threaded rod is installed on the inner side of the slide groove, two sets of clamping plates are provided, the upper end of which is threaded to the surfaces of both ends of the bidirectional threaded rod, and the knob is connected to one end of the bidirectional threaded rod.

[0007] Preferably, the heating assembly includes a second heating tube and a first heating tube. The second heating tube is installed on the surface of one side of the side plate, one end of the first heating tube is integrally connected to one end of the second heating tube, and the second heating tube is installed on the surface of one side of the main body.

[0008] Preferably, one end of the bidirectional threaded rod is rotatably mounted on the inner wall of one end of the slide groove, and the other end passes through one end of the support plate and is connected to the surface of the knob, with the knob located at one end of the support plate.

[0009] Preferably, a handle is installed on the upper surface of one side of the main body, and the handle is made of high-temperature resistant rubber.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. The two sets of clamping devices can fix the main body on the surface of the frame, and at the same time, they can prevent deformation and displacement during heating and cooling, thereby eliminating residual welding stress. Then, the second heating tube and the first heating tube are activated to heat the weld. The side plate and the second heating tube can make the weld more evenly heated. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main view of this utility model;

[0013] Figure 2 This is a schematic diagram of the heating component of this utility model;

[0014] Figure 3 This is a schematic diagram of the clamping device of this utility model;

[0015] In the diagram: 1-Main body, 2-Frame, 3-Heating tube connector, 4-Handle, 5-Second heating tube, 6-First heating tube, 7-Side plate, 9-Dual threaded rod, 10-Support plate, 11-Slide groove, 12-Clamping plate, 13-Knob. Detailed Implementation

[0016] 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.

[0017] Please refer to Figure 1-3 As shown, this utility model provides a welding residual stress relief device, including a main body 1 and a frame 2. The main body 1 is disposed inside the frame 2. Clamping devices are installed on both sides of the main body 1. Side plates 7 are installed on the lower two sides of the main body 1. Heating components are provided on the side plates 7 and the inner wall of the main body 1. One end of the heating component passes through the main body 1 and is connected to a heating pipe connector 3. The heating pipe connector 3 extends to the outside of the main body 1. Insulation cotton is provided inside the main body 1.

[0018] Specifically, the two sets of clamping devices can fix the main body 1 on the surface of the frame 2, and at the same time, they can prevent deformation and displacement during heating and cooling, thereby eliminating residual welding stress. Then, the second heating tube 5 and the first heating tube 6 are activated to heat the weld. The side plate 7 and the second heating tube 5 can make the weld more evenly heated.

[0019] The clamping device includes a bidirectional threaded rod 9, a support plate 10, a slide groove 11, a clamping plate 12, and a knob 13. The support plate 10 is installed on the surface of the main body 1, the slide groove 11 is opened on the lower surface of the support plate 10, the bidirectional threaded rod 9 is installed on the inner side of the slide groove 11, and two sets of clamping plates 12 are provided, with their upper ends threadedly connected to the surfaces of both ends of the bidirectional threaded rod 9. The knob 13 is connected to one end of the bidirectional threaded rod 9. By rotating the knob 13, the bidirectional threaded rod 9 is driven to rotate. The rotation of the bidirectional threaded rod 9 drives the two sets of clamping plates 12 to move in opposite directions inside the slide groove 11, thereby fixing the main body 1 on the surface of the frame 2.

[0020] The heating assembly includes a second heating tube 5 and a first heating tube 6. The second heating tube 5 is installed on the surface of one side of the side plate 7. One end of the first heating tube 6 is integrally connected to one end of the second heating tube 5. The second heating tube 5 is installed on the surface of one side of the main body 1. By setting the second heating tube 5 and the first heating tube 6, the welding joint of 2 can be heated, making the heating more uniform.

[0021] Wherein: one end of the bidirectional threaded rod 9 is rotatably mounted on the inner wall of one end of the slide groove 11, and the other end of it passes through one end of the support plate 10 and is connected to the surface of the knob 13. The knob 13 is set at one end of the support plate 10. By rotatably mounting the bidirectional threaded rod 9 inside the slide groove 11, it is convenient for the knob 13 to drive the bidirectional threaded rod 9 to rotate.

[0022] Among them: a handle 4 is installed on the upper surface of one side of the main body 1, and the handle 4 is made of high temperature resistant rubber.

[0023] Working principle: This utility model is a welding residual stress elimination device. First, the main body 1 is clamped on the outside of the frame 2, and the second heating tube 5 and the bidirectional threaded rod 9 are placed at the welding point of the frame 2. Then, the knob 13 is turned to drive the bidirectional threaded rod 9 to rotate. The rotation of the bidirectional threaded rod 9 drives the two sets of clamping plates 12 to move in opposite directions inside the slide groove 11, thereby fixing the main body 1 on the surface of the frame 2. Then, the second heating tube 5 and the first heating tube 6 are activated through the heating tube connector 3 to heat the welding point of the frame 2. Through the two sets of clamping devices, deformation and displacement will not occur during heating and cooling, thereby achieving the purpose of eliminating welding residual stress.

[0024] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding residual stress relief device, comprising a main body (1) and a frame (2), characterized in that: The main body (1) is located inside the frame (2). Clamping devices are installed on both sides of the main body (1). Side plates (7) are installed on both sides of the lower end of the main body (1). Heating components are provided on the side plates (7) and the inner wall of the main body (1). One end of the heating component passes through the main body (1) and is connected to a heating pipe connector (3). The heating pipe connector (3) extends to the outside of the main body (1). Insulation cotton is provided inside the main body (1).

2. The welding residual stress relief device according to claim 1, characterized in that: The clamping device includes a bidirectional threaded rod (9), a support plate (10), a slide groove (11), a clamping plate (12), and a knob (13). The support plate (10) is installed on the surface of the main body (1). The slide groove (11) is opened on the lower surface of the support plate (10). The bidirectional threaded rod (9) is installed on the inner side of the slide groove (11). The clamping plate (12) is provided in two sets, with its upper end threadedly connected to the surfaces of both ends of the bidirectional threaded rod (9). The knob (13) is connected to one end of the bidirectional threaded rod (9).

3. The welding residual stress relief device according to claim 2, characterized in that: The heating assembly includes a second heating tube (5) and a first heating tube (6). The second heating tube (5) is installed on the surface of one side of the side plate (7). One end of the first heating tube (6) is connected to one end of the second heating tube (5). The second heating tube (5) is installed on the surface of one side of the main body (1).

4. The welding residual stress relief device according to claim 2, characterized in that: One end of the bidirectional threaded rod (9) is rotatably mounted on the inner wall of one end of the slide groove (11), and the other end passes through one end of the support plate (10) and is connected to the surface of the knob (13), which is located at one end of the support plate (10).

5. The welding residual stress relief device according to claim 3, characterized in that: A handle (4) is installed on the upper surface of one side of the main body (1), and the handle (4) is made of high temperature resistant rubber.

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