Anti-deformation structure for metal substrate surfacing

Abstract

The utility model belongs to the technical field of metal base plate surfacing, especially relates to the anti-deformation structure for metal base plate surfacing, including two pad plates, two pad plates are respectively arranged in the both sides of the width direction of metal base plate bottom, the length of pad plate is not less than the length of metal base plate to be surfacing, and each pad plate is fixedly connected with metal base plate along its length direction through the welding spot of interval distribution. Effectively increase the structural rigidity and heat capacity of the area of both sides of metal base plate, suppress the wave deformation caused by instantaneous high temperature, thereby effectively avoid the material waste caused by deformation, greatly improve the yield and material utilization, reduce production cost.

Description

Technical Field

[0001] This utility model belongs to the field of metal substrate overlay technology, and particularly relates to an anti-deformation structure for metal substrate overlay. Background Technology

[0002] In thin-plate cladding processes, 3mm thick metal plates are typically stacked and welded onto a 3mm or 2mm thick metal substrate using a fusion welding method to form a complete and dense composite plate, giving it multiple high-performance properties such as corrosion resistance and wear resistance. However, the high temperatures generated during the cladding process can easily cause thermal expansion and contraction of the composite plate in the width direction, resulting in obvious wavy deformation on both sides of the composite plate, exhibiting an upward arched shape.

[0003] Because the working distance between the conductive nozzle and the metal substrate in the welding equipment is small, the working distance will be further shortened after the composite plate arches upward, which can easily cause the conductive nozzle to burn through the arched part. In severe cases, it can also block the conductive nozzle, causing the welding gun to be unable to move normally.

[0004] Furthermore, the wavy deformation formed after welding is difficult to completely eliminate using conventional leveling processes. After cutting to the preset standard dimensions, such as a metal substrate with an original width of 1510 mm and a target finished product width of 1480 mm, the composite board still retains obvious wavy patterns on both sides, failing to meet the customer's basic requirements for surface flatness. To achieve the flatness standard, the actual cutting width often needs to be further reduced to below 1360 mm, meaning a loss of more than 120 mm compared to the original width, resulting in decreased material utilization and a significant increase in production costs. Utility Model Content

[0005] The purpose of this invention is to provide an anti-deformation structure for metal substrate overlay welding, which solves the problem that existing metal substrates are very thin, and the overlay welding causes wavy deformation in the width direction of the metal substrate. In order to meet the flatness requirements, a lot of deformed areas need to be cut off, which increases the production cost.

[0006] To achieve the above objectives, this utility model provides an anti-deformation structure for metal substrate welding, comprising two metal pads, which are respectively disposed on both sides of the bottom width direction of the metal substrate. The length of each pad is not less than the welding length of the metal substrate, and each pad is fixedly connected to the metal substrate along its length direction by spaced solder points.

[0007] Furthermore, the two opposite sides of the pads are respectively aligned with the two sides of the metal substrate in the width direction.

[0008] Furthermore, each of the pads is connected to the metal substrate via spaced solder joints along one or both edges of its length direction.

[0009] Furthermore, the diameter of the solder joint is 4.5-5.5 mm, and the distance between two adjacent solder joints on the same side of the pad is 130-150 mm.

[0010] Furthermore, the thickness of the pad is 6-8 mm and the width is 50-80 mm.

[0011] Furthermore, the pad is made of Q235B low-carbon steel.

[0012] Furthermore, heat dissipation fins are provided at intervals along the length of the two pads on the side surfaces that are close to each other. The width of the heat dissipation fins is 8 mm to 12 mm, the spacing between two adjacent heat dissipation fins is 120 mm to 150 mm, and the heat dissipation fins and the pads are integrally formed.

[0013] Furthermore, there is a gap between the pad and the surface of the metal substrate that are close to each other, the gap being 0.5 mm to 1.5 mm.

[0014] The above-mentioned one or more technical solutions in the anti-deformation structure for metal substrate overlay provided in this embodiment of the utility model have at least the following technical effects: By providing pads on both sides of the bottom width of the metal substrate, the structural rigidity and heat capacity of the two sides of the metal substrate are effectively increased. During the welding process, when a heat source of fixed power is applied to the metal substrate, the combination of the pads and the metal substrate needs to heat more metal, thus effectively reducing the temperature rise efficiency and peak temperature in this area, thereby suppressing the wavy deformation caused by instantaneous high temperature.

[0015] In addition, the backing plate is connected to the metal substrate through solder joints spaced at both ends. Under the action of heat conduction, the solder joints in the heat source path area will melt and detach, so that the backing plate will automatically separate from the metal substrate as the welding gun moves forward. This does not affect the continuity of welding and does not require subsequent disassembly.

[0016] The resulting composite board exhibits excellent flatness in the width direction. Using a 1510 mm wide metal substrate, the welded surface can be directly cut into a flat 1480 mm wide finished product without the need for further width reduction for straightening. This effectively avoids material waste caused by deformation, significantly improves yield and material utilization, and substantially reduces production costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the anti-deformation structure for metal substrate overlay welding provided in an embodiment of the present invention.

[0019] Figure 2 Another structural diagram of the anti-deformation structure for metal substrate overlay provided in this embodiment of the present invention.

[0020] Figure 3 The deformation-resistant structure for metal substrate overlay provided in this embodiment of the utility model Figure 2 The structural diagram of A in the middle.

[0021] Figure 4 A structural diagram of the anti-deformation structure of the metal substrate portion after welding, provided in an embodiment of this utility model.

[0022] In the diagram, 10 is the metal substrate, and 11 is the composite board. 20. Pad, 21. Solder joint, 22. Gap, 23. Heat sink fins. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0024] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0027] In one embodiment of the anti-deformation structure for metal substrate overlay welding of this utility model, please refer to... Figures 1 to 4 The anti-deformation structure for metal substrate cladding includes two metal pads 20, which are respectively disposed on both sides of the bottom width direction of the metal substrate 10. The length of the pads 20 is not less than the length of the metal substrate 10 to be cladding, and each pad 20 is fixedly connected to the metal substrate 10 along its length direction through spaced solder joints 21.

[0028] Specifically, by providing pads 20 on both sides of the bottom width direction of the metal substrate 10, the structural rigidity and heat capacity of the areas on both sides of the metal substrate 10 are effectively increased. During the welding process, when a heat source of fixed power is applied to the substrate 10, the combination of the pads 20 and the metal substrate 10 needs to heat more metal, and the temperature rise efficiency and peak temperature in this area are effectively reduced, thereby suppressing the wave-shaped deformation caused by instantaneous high temperature.

[0029] In addition, the pad 20 is connected to the metal substrate 10 through solder joints 21 spaced at both ends. Under the action of heat conduction, the solder joints 21 in the heat source path area will melt and detach, so that the pad 20 will automatically separate from the metal substrate 10 as the welding gun moves forward, which does not affect the continuity of welding and does not require subsequent disassembly.

[0030] The resulting composite plate 11 has good flatness in the width direction. Using a metal substrate 10 with a width of 1510 mm, it can be directly cut into a flat finished product with a width of 1480 mm after welding, without the need for further reduction of the width dimension for straightening, effectively avoiding material waste caused by deformation, greatly improving the yield and material utilization rate, and significantly reducing production costs.

[0031] Please refer to Figure 3 A gap 22, ranging from 0.5 mm to 1.5 mm, is provided between the surface of the pad 20 and the metal substrate 10 that are close to each other. Specifically, the gap 22 is preferably 1 mm. The gap 22 ensures that the heat of welding is conducted through the spaced solder joints 21 to form a stable and controllable heat conduction path between the metal substrate 10 and the pad 20.

[0032] Please refer to Figure 3 and Figure 4 The two backing plates 20 are aligned with their opposite sides in the width direction of the metal substrate 10. Specifically, aligning the backing plates 20 with the sides of the metal substrate 10 facilitates initial positioning, followed by spot welding to fix them in place manually or automatically. Secondly, this ensures that the weld points 21 are precisely distributed at the edges where the two plates meet. This location is the main path for heat conduction during welding, ensuring that the weld points 21 are rapidly heated to their melting point and reliably broken when the heat source passes through. Finally, the backing plates 20 are automatically and orderly separated during the welding process.

[0033] Please refer to Figure 3 Each pad 20 is connected to the metal substrate 10 along one or both edges of its length by spaced-apart solder points 21. Specifically, solder points 21 are provided on one edge of the pad 20, mainly to provide vertical constraint and effectively resist the upward arching deformation of the substrate 10. Solder points 21 are provided on both edges of the pad 20, which simultaneously provide vertical constraint and enhance lateral stability, preventing the pad 20 from shifting or twisting in the horizontal plane, providing a more comprehensive constraint effect to accommodate substrates 10 of different widths. In addition, edge spot welding is quick, requiring less solder and labor, and the pads are easy to clean and reuse, reducing production costs.

[0034] Please refer to Figure 3 The diameter of the solder joint 21 is 4.5-5.5 mm, and the distance between two solder joints 21 on the same side of the pad 20 is 130-150 mm. Specifically, the diameter of the solder joint 21 is preferably 5 mm, and the center distance between adjacent solder joints 21 is preferably 140 mm. This avoids situations where the solder joints 21 are too large or the spacing is too small. Excessively large solder joints 21 and excessively dense spacing will significantly enhance the rigid connection between the pad 20 and the substrate 10. Under the action of welding thermal stress, the two will be violently pulled together, potentially causing local deformation of the substrate 10. Furthermore, an excessively strong connection will prevent the solder joints 21 from melting and breaking in an orderly manner as the heat source advances, causing the pad 20 to fail to detach automatically. Subsequent manual cutting using tools such as an angle grinder will be required, increasing additional operating procedures and production costs.

[0035] The thickness of the pad 20 is 6-8 mm, and the width is 50-80 mm. Specifically, the thickness of the pad 20 can be 6 mm, 7 mm, or 8 mm, and the width can be 50 mm, 60 mm, 70 mm, or 80 mm.

[0036] The backing plate 20 is made of Q235B low-carbon steel. Specifically, Q235B low-carbon steel is low in cost, has good thermal conductivity, and can effectively absorb and disperse heat. On the other hand, the material of the backing plate 20 is the same as that of the metal substrate 10. The two metals of the same material have the same melting point and welding performance, making the quality of the positioning solder joint 21 more stable and controllable.

[0037] On the adjacent surfaces of the two pads 20, heat dissipation fins 23 are provided at intervals along their length. The width of the heat dissipation fins 23 is 8 mm to 12 mm, and the spacing between two adjacent heat dissipation fins 23 is 120 mm to 150 mm. The heat dissipation fins 23 and the pads 20 are integrally formed. Specifically, the solder joints 21 on the adjacent sides of the two pads 20 are located between adjacent heat dissipation fins 23. The thickness of the heat dissipation fins 23 is the same as the thickness of the pads, increasing the heat dissipation area of ​​the pads 20 and accelerating the heat dissipation of the pads 20 during the soldering process. The integrally formed structure ensures the connection strength between the heat dissipation fins 23 and the pads 20, preventing the heat dissipation fins 23 from falling off, eliminating the need for additional assembly processes, and extending the service life of the pads 20.

[0038] 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 deformation-resistant structure for overlay welding of metal substrates, characterized in that, It includes two metal backing plates, which are respectively disposed on both sides of the bottom width direction of the metal substrate. The length of the backing plate is not less than the length of the metal substrate to be welded. Each backing plate is fixedly connected to the metal substrate along its length direction by spaced solder points.

2. The anti-deformation structure for metal substrate overlay welding according to claim 1, characterized in that: The two pads are aligned with the two sides of the metal substrate in the width direction on opposite sides.

3. The anti-deformation structure for metal substrate overlay welding according to claim 2, characterized in that: Each of the pads is connected to the metal substrate by spaced solder points along one or both edges of its length direction.

4. The anti-deformation structure for metal substrate overlay welding according to claim 3, characterized in that: The diameter of the solder joint is 4.5-5.5 mm, and the distance between two adjacent solder joints on the same side of the pad is 130-150 mm.

5. The anti-deformation structure for metal substrate overlay welding according to any one of claims 1-4, characterized in that: The thickness of the pad is 6-8 mm and the width is 50-80 mm.

6. The anti-deformation structure for metal substrate overlay welding according to claim 5, characterized in that: The pad is made of Q235B low carbon steel.

7. The anti-deformation structure for metal substrate overlay welding according to claim 5, characterized in that: The two pads are provided with heat dissipation fins spaced apart along their length on the adjacent side surfaces. The width of the heat dissipation fins is 8 mm to 12 mm, the spacing between two adjacent heat dissipation fins is 120 mm to 150 mm, and the heat dissipation fins and the pads are integrally formed.

8. The anti-deformation structure for metal substrate overlay welding according to claim 1, characterized in that: The pad has a gap of 0.5 mm to 1.5 mm between its surface and the metal substrate.

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