Ferritic stainless steel sheet welding deformation control device

Abstract

A kind of ferritic stainless steel plate welding deformation control device, including multiple support frames articulated by pin shaft, mobile slot is set up in the two sides of support frame, mobile slot is provided with movable lifting device inside, fixed disc is provided below lifting device, lifting device is connected with fixed disc by fastener, reference device is also provided on the outside surface of fastener;The end of pin shaft with fixed disc same side is sleeved with collar, laser equipment used in cooperation with reference device is provided below collar.The utility model can more directly guide welding operation, staff can use the projection of laser equipment on reference device, timely adjust lifting device, control welding deformation, it is favorable to improve the accuracy when welding, improve welding effect.

Description

Technical Field

[0001] This utility model relates to the field of welding deformation control technology for ferritic stainless steel plates, specifically a control device for welding deformation of ferritic stainless steel plates, which is particularly suitable for welding ferritic stainless steel plates with a thickness of less than 3mm. Background Technology

[0002] Ferritic stainless steel is widely used in automotive exhaust pipes, home appliances, and architectural decoration due to its excellent resistance to stress corrosion, thermal conductivity, and cost-effectiveness. However, during welding, the high coefficient of linear expansion and poor thermal conductivity of ferritic stainless steel lead to heat concentration and difficulty in rapid dissipation under the influence of localized high-temperature heat sources. This results in uneven thermal expansion and contraction in the weld and near-weld zone, causing significant warping, angular deformation, and shrinkage deformation. While traditional rigid clamps can provide fixation, the inherent properties of stainless steel cannot completely prevent deformation stress from overcoming clamping forces during fixation, thus affecting welding quality and accuracy. Utility Model Content

[0003] To address the problem of uneven welding caused by traditional welding fixtures, which leads to welding defects, this invention provides a control device for welding deformation of ferritic stainless steel plates.

[0004] The technical solution of this utility model is as follows: A control device for welding deformation of ferritic stainless steel plate includes multiple support frames hinged by pins, and each support frame has a moving groove on both sides away from the pins, the moving groove penetrating the surface of the support frame. The movable slot is equipped with a lifting device that moves along the length of the movable slot. A fixed plate is provided below the lifting device. The lifting device and the fixed plate are connected by fasteners. A reference device is also provided on the outer surface of the fasteners. A collar is fitted onto one end of the pin on the same side as the fixed disk. The collar can rotate freely on the surface of the pin. A laser device that works in conjunction with the reference device is located below the collar.

[0005] Furthermore, in the aforementioned control device for welding deformation of ferritic stainless steel plates, the fixing plate is a suction cup structure, and its bottom is used in conjunction with the workpiece by adsorption.

[0006] Furthermore, in the control device for welding deformation of ferritic stainless steel plate described above, the laser equipment has a dual-laser-head structure, with the two laser heads located on the same straight line and arranged opposite each other.

[0007] Furthermore, in the aforementioned control device for welding deformation of ferritic stainless steel plate, the reference device is a scale line, which is arranged in a circumferential manner on the outer surface of the fastener.

[0008] Furthermore, in the aforementioned control device for welding deformation of ferritic stainless steel plates, the lifting devices located inside the same support frame are on the same straight line, and the light emitted by the laser device is projected onto the surface of the fasteners below the same support frame.

[0009] Furthermore, in the control device for welding deformation of ferritic stainless steel plate described above, the moving grooves on both sides of the pin are symmetrical about the middle of the support frame.

[0010] Furthermore, in the control device for welding deformation of ferritic stainless steel plate described above, the number of support frames is at least two, and the support frames can rotate relative to each other, with a rotation angle range of 0-180°.

[0011] Furthermore, in the aforementioned control device for welding deformation of ferritic stainless steel plate, the surface of the lifting device is also provided with two fastening nuts, which are sleeved on the surface of the lifting device.

[0012] Furthermore, in the control device for welding deformation of ferritic stainless steel plate described above, there is a certain gap between two fastening nuts located on the same lifting device surface, and the distance between the gaps is equal to the thickness of the support plate.

[0013] The beneficial effects of this utility model are as follows: This invention provides a deformation control solution for welding ferritic stainless steel plates, particularly those with a thickness of less than 3mm. It involves symmetrically arranging moving slots at both ends of multiple hinged support frames. A lifting device is fixed inside these slots by two fastening nuts on its surface. A fixed plate is located below the lifting device, connected to it by fasteners. The support frames are hinged together by pins, with a freely rotatable laser device mounted on one end of the pin on the same side as the fixed plate. A reference device is positioned on the surface of the fasteners. By projecting the laser onto the reference device, the deformation during welding can be more clearly visualized. Workers can use the laser projection onto the reference device to adjust the lifting device in a timely manner, thus preventing deformation during welding, improving welding accuracy, and enhancing welding results. Attached Figure Description

[0014] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present invention when it is fixed to the workpiece; Figure 3 This is a top view of the structure of this utility model; Figure 4 This is a bottom view of the structure of this utility model.

[0016] The components represented by the various reference numerals in the diagram are: 1. Support frame; 2. Pin; 3. Moving groove; 4. Lifting device; 5. Fastener; 6. Reference device; 7. Fixed plate; 8. Fastening nut; 9. Collar; 10. Laser equipment. Detailed Implementation

[0017] Example 1 like Figure 1-4 The disclosed control device for welding deformation of ferritic stainless steel plates aims to solve the problems of warping, angular deformation, and shrinkage deformation caused by concentrated heat input and uneven heat dissipation during the welding process of ferritic stainless steel, while overcoming the defects of traditional rigid fixtures that easily introduce additional stress. This embodiment of the control device for welding deformation of ferritic stainless steel plates includes multiple support frames 1, which are connected by pins 2. The pins 2 are located in the middle of the support frames 1, and adjacent support frames 1 can rotate around the pins 2. The rotation angle between adjacent support frames 1 is within the range of 0-180° to ensure the fixation of ferritic stainless steel plates of different sizes.

[0018] Movable grooves 3 are provided on both sides of the support frame 1, and the movable grooves 3 penetrate the upper surface of the support frame 1. The movable grooves 3 on both sides of the same support frame 1 are symmetrical about the pin 2. A lifting device 4 is also provided inside the movable groove 3. The lifting device 4 can move along the length of the movable groove 3. In order to facilitate the fixing between the lifting device 4 and the support frame 1, two fastening nuts 8 are provided on the outer surface of the lifting device 4. The lifting device 4 and the fastening nuts 8 are threadedly connected. After the two fastening nuts 8 on the same surface of the lifting device 4 are tightened, the distance between them is equal to the thickness of the support frame 1. The positioning and fixing between the support frame 1 and the lifting device 4 are achieved by adjusting the distance between the two fastening nuts 8.

[0019] A fixing plate 7 is also designed below the lifting device 4. The fixing plate 7 is connected to the lifting device 4 by fasteners 5. In this embodiment, the fixing plate 7 is a suction cup structure. The suction cup fixing plate 7 has a negative pressure connector that is tightly attached to the surface of the ferritic stainless steel plate to be welded by negative pressure adsorption, which provides stable support and avoids indentation or damage to the surface of the workpiece.

[0020] A collar 9 is fitted onto one end of the pin 2 on the same side as the fixed plate 7, and the collar 9 can rotate freely around the pin 2. A laser device 10 is installed below the collar 9. This laser device 10 has a dual-laser-head structure, with the two laser heads located on the same straight line and emitting lasers towards each other. It is worth noting that the fastener 5 is a bolted connection structure, and its outer surface is surrounded by a reference device 6. The reference device 6 is a precision scale line, which is arranged in a circular manner on the outer surface of the fastener 5 to cooperate with the laser device 10 for high-precision alignment. The light emitted by the laser device 10 is projected onto the scale line of the reference device 6 located below the same support frame 1. By observing the overlap between the laser line and the scale lines on the surfaces of different fasteners 5, the spatial position of each support frame 1 and the fixed plate 7 can be precisely adjusted to ensure that the stainless steel workpiece to be welded is in an ideal alignment state during the welding process.

[0021] Please refer to the appendix. Figure 1-4 When using this device, first install a fastening nut 8 on the lifting device 4 so that all the fastening nuts 8 are roughly on the same plane. Then, place the integrated structure consisting of the fixing plate 7 and the lifting device 4 on the plane so that the fixing plate 7 contacts the plane. Then, pass the moving groove 3 on the surface of the support frame 1 through the lifting device 4 from above so that the lower surface of the support frame 1 contacts the upper surface of the fastened fastening nut 8. Then, tighten another fastening nut 8 so that it contacts the upper surface of the support frame 1 and is tightened. Place the device above the workpiece so that each fixing plate 7 initially contacts the surface of the workpiece, so that the fixing plate 7 is firmly attached to the surface of the stainless steel workpiece to be welded.

[0022] Turn on the laser device 10, projecting the laser beams from its dual laser heads onto the scale lines on the surfaces of the fasteners 5 below the corresponding support frame 1. By finely adjusting the rotation angle of the support frame 1 and the height of the lifting device 4, ensure that all laser beams are precisely pointed to the same position on the scale lines of the different fasteners 5. This step ensures that all fixed points are in precise spatial positions relative to the optical reference plane established by the laser. During the welding operation, the operator can check the reference scale at any time through the laser indicator and monitor in real time whether the workpiece has shifted or deformed due to heat input. If the laser beam is found to deviate from the reference scale, welding can be paused in time, and the corresponding fixed points can be adjusted to compensate for thermal deformation.

[0023] Welding operations are performed on the opposite side of the fixed device. The welding platform is designed with space for the welding machine. Welding methods can include manual arc welding, argon arc welding, etc.

[0024] In another different from the appendix Figure 2 In this embodiment, depending on the control requirements for local deformation of the ferritic stainless steel plate, the device can be set in a specific deformation area on the surface of one of the two ferritic stainless steel plates to be welded, or multiple devices can be set in different deformation areas. This method of use is particularly suitable for the fine control requirements of local deformation of large-size thin plates.

[0025] After welding is completed, release the vacuum adsorption of the fixing plate 7, and the entire device can be removed from the workpiece. Then, remove each device in the reverse order of the installation steps to complete the disassembly and assembly of the equipment.

[0026] Example 2 like Figure 1-4 The disclosed control device for welding deformation of ferritic stainless steel plates aims to solve the problems of warping, angular deformation, and shrinkage deformation caused by concentrated heat input and uneven heat dissipation during the welding process of ferritic stainless steel, while overcoming the defects of traditional rigid fixtures that easily introduce additional stress. This embodiment of the control device for welding deformation of ferritic stainless steel plates includes multiple support frames 1, which are connected by pins 2. The pins 2 are located in the middle of the support frames 1, and adjacent support frames 1 can rotate around the pins 2. The rotation angle between adjacent support frames 1 is within the range of 0-180° to ensure the fixation of ferritic stainless steel plates of different sizes.

[0027] Movable grooves 3 are provided on both sides of the support frame 1, and the movable grooves 3 penetrate the upper surface of the support frame 1. The movable grooves 3 on both sides of the same support frame 1 are symmetrical about the pin 2. A lifting device 4 is also provided inside the movable groove 3. The lifting device 4 can move along the length of the movable groove 3. In order to facilitate the fixing between the lifting device 4 and the support frame 1, two fastening nuts 8 are provided on the outer surface of the lifting device 4. The lifting device 4 and the fastening nuts 8 are threadedly connected. After the two fastening nuts 8 on the same surface of the lifting device 4 are tightened, the distance between them is equal to the thickness of the support frame 1. The positioning and fixing between the support frame 1 and the lifting device 4 are achieved by adjusting the distance between the two fastening nuts 8.

[0028] A fixing plate 7 is also designed below the lifting device 4. The fixing plate 7 is connected to the lifting device 4 by fasteners 5. In this embodiment, the fixing plate 7 is a suction cup structure. The suction cup fixing plate 7 has a negative pressure connector that is tightly attached to the surface of the ferritic stainless steel plate to be welded by negative pressure adsorption, which provides stable support and avoids indentation or damage to the surface of the workpiece.

[0029] A collar 9 is fitted onto one end of the pin 2 on the same side as the fixed plate 7, and the collar 9 can rotate freely around the pin 2. A laser device 10 is installed below the collar 9. This laser device 10 has a dual-laser-head structure, with the two laser heads located on the same straight line and emitting lasers towards each other. It is worth noting that the fastener 5 is a bolted connection structure, and its outer surface is surrounded by a reference device 6. The reference device 6 is a precision scale line, which is arranged in a circular manner on the outer surface of the fastener 5 to cooperate with the laser device 10 for high-precision alignment. The light emitted by the laser device 10 is projected onto the scale line of the reference device 6 located below the same support frame 1. By observing the overlap between the laser line and the scale lines on the surfaces of different fasteners 5, the spatial position of each support frame 1 and the fixed plate 7 can be precisely adjusted to ensure that the stainless steel workpiece to be welded is in an ideal alignment state during the welding process.

[0030] Please refer to the appendix. Figure 1-4 When using this device, first install a fastening nut 8 on the lifting device 4 so that all the fastening nuts 8 are roughly on the same plane. Then, place the integrated structure consisting of the fixing plate 7 and the lifting device 4 on the plane so that the fixing plate 7 contacts the plane. Then, pass the moving groove 3 on the surface of the support frame 1 through the lifting device 4 from above so that the lower surface of the support frame 1 contacts the upper surface of the fastened fastening nut 8. Then, tighten another fastening nut 8 so that it contacts the upper surface of the support frame 1 and is tightened. Place the device above the workpiece so that each fixing plate 7 initially contacts the surface of the workpiece, so that the fixing plate 7 is firmly attached to the surface of the stainless steel workpiece to be welded.

[0031] Turn on the laser device 10, projecting the laser beams from its dual laser heads onto the scale lines on the surfaces of the fasteners 5 below the corresponding support frame 1. By finely adjusting the rotation angle of the support frame 1 and the height of the lifting device 4, ensure that all laser beams are precisely pointed to the same position on the scale lines of the different fasteners 5. This step ensures that all fixed points are in precise spatial positions relative to the optical reference plane established by the laser. During the welding operation, the operator can check the reference scale at any time through the laser indicator and monitor in real time whether the workpiece has shifted or deformed due to heat input. If the laser beam is found to deviate from the reference scale, welding can be paused in time, and the corresponding fixed points can be adjusted to compensate for thermal deformation.

[0032] Welding operations are performed on the side where the device is fixed. In this case, the extension length of the lifting device needs to be adjusted in advance to ensure that the device does not affect the welding work.

[0033] In another different from the appendix Figure 2In this embodiment, depending on the control requirements for local deformation of the ferritic stainless steel plate, the device can be set in a specific deformation area on the surface of one of the two ferritic stainless steel plates to be welded, or multiple devices can be set in different deformation areas. This method of use is particularly suitable for the fine control requirements of local deformation of large-size thin plates.

[0034] After welding is completed, release the vacuum adsorption of the fixing plate 7, and the entire device can be removed from the workpiece. Then, remove each device in the reverse order of the installation steps to complete the disassembly and assembly of the equipment.

Claims

1. A control device for welding deformation of ferritic stainless steel plate, comprising multiple support frames (1) hinged by pins (2), characterized in that, The support frame (1) has movable grooves (3) on both sides away from the pin (2), and the movable grooves (3) penetrate the surface of the support frame (1); The interior of the moving groove (3) is provided with a lifting device (4) that moves along the length of the moving groove (3). A fixed plate (7) is provided below the lifting device (4). The lifting device (4) and the fixed plate (7) are connected by fasteners (5). A reference device (6) is also provided on the outer surface of the fasteners (5). A collar (9) is fitted on one end of the pin (2) on the same side as the fixed disk (7). The collar (9) can rotate arbitrarily on the surface of the pin (2). A laser device (10) is provided below the collar (9) to be used in conjunction with the reference device (6).

2. The control device for welding deformation of ferritic stainless steel plate according to claim 1, characterized in that, The fixed plate (7) is a suction cup structure, and its bottom is used in conjunction with the workpiece by adsorption.

3. The control device for welding deformation of ferritic stainless steel plate according to claim 1, characterized in that, The laser device (10) has a dual-laser-head structure, with the two laser heads located on the same straight line and positioned opposite each other.

4. The control device for welding deformation of ferritic stainless steel plate according to claim 3, characterized in that, The reference device (6) is a scale line, which is arranged in a circular manner on the outer surface of the fastener (5).

5. The control device for welding deformation of ferritic stainless steel plate according to claim 4, characterized in that, The lifting devices (4) located inside the same support frame (1) are on the same straight line, and the light emitted by the laser device (10) is projected onto the surface of the fastener (5) below the same support frame (1).

6. The control device for welding deformation of ferritic stainless steel plate according to claim 1, characterized in that, The movable grooves (3) located on both sides of the pin (2) are symmetrical about the middle of the support frame (1).

7. The control device for welding deformation of ferritic stainless steel plate according to claim 1, characterized in that, The number of the support frame (1) is at least two, and the support frame (1) can rotate relative to each other, with the rotation angle range being 0-180°.

8. The control device for welding deformation of ferritic stainless steel plate according to claim 1, characterized in that, The surface of the lifting device (4) is also provided with two fastening nuts (8), which are sleeved on the surface of the lifting device (4).

9. A control device for welding deformation of ferritic stainless steel plate according to claim 8, characterized in that, There is a certain gap between the two fastening nuts (8) located on the same lifting device (4) surface, and the distance between the gaps is equal to the thickness of the support plate.

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