A welding process for dissimilar steels

Abstract

The present invention discloses a welding process for dissimilar steels, which relates to the field of material welding technology. In order to solve the problem that existing welding methods cannot meet actual use requirements, the process specifically includes the following steps: cutting a first metal material into a symbol A; opening a groove A that matches the symbol A inside a second metal material; embedding the symbol A into the groove A to obtain a fitting block; placing the fitting block into a forging furnace, heating it, taking it out, and mechanically pressing and solidifying it to obtain a finished product; the process also includes surface cleaning the first metal material and the second metal material; replacing the welding process with the following steps: opening a groove B inside the second metal material; and sealing one end of the second metal material with a metal cover that matches one end of the second metal material. While meeting the requirements for dissimilar steel welding, the present invention can be processed for aesthetics and other aspects according to actual use requirements, is easy to operate, and is easy to promote.

Description

Technical Field

[0001] The present invention relates to the technical field of material welding, and in particular to a welding process for dissimilar steels. Background Art

[0002] There are many conventional technologies for bonding metals to obtain composite materials, such as forging welding, also known as pattern welding in the industry, which is used to make composite steel. Two or more metals with different chemical compositions and different organizational properties are bonded together in an open atmosphere to weld into a composite material with specified design requirements. In order to obtain such a composite material, it is necessary to heat the steel plate or steel layer to a high temperature and press it together with a pressure sufficient to form molecular bonds between the plates. This welding method can achieve bonding without the use of additional metal. In contrast to arc welding, a properly forged welded joint is very strong, while retaining all the physical properties of the parts and presenting an attractive (sometimes invisible) bond, so it is widely used.

[0003] After searching, the Chinese patent application number CN202110153163.3 discloses a welding process for dissimilar steels, including the base materials of the dissimilar steels being 05Si2CrCuNi soft magnetic steel and carbon steel, and the welding process comprising manual root welding and submerged arc welding steps; wherein a cushion layer is welded on the surface of the soft magnetic steel before the manual root welding. The welding process for dissimilar steels in the above patent has the following shortcomings: it only butts the two materials, and it is not possible to create drawings or text on the dissimilar steels while welding. Therefore, there is a defect that the welding method cannot be processed according to actual use requirements. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a welding process for dissimilar steels.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A welding process for dissimilar steels comprises the following steps:

[0007] S1: Cutting a first metal material into a symbol A;

[0008] S2: Opening a groove A in the second metal material that matches the symbol A;

[0009] S3: embed the symbol A into the slot A to obtain a mosaic block;

[0010] S4: placing the assembled block into a forging furnace for heating, taking it out, and mechanically pressing it to solidify it to obtain a finished product;

[0011] Before S3, the surface of the first metal material and the second metal material is cleaned.

[0012] Preferably, the welding process is replaced by the following steps:

[0013] S11: Opening a groove B inside the second metal material;

[0014] S12: sealing one end of the second metal material with a metal cover that matches one end of the second metal material;

[0015] S13: using a filling tool to pour the powdered first metal material into the groove B to fill it firmly, and then using a second metal cover that matches one end of the second metal material to seal the other end of the second metal material to obtain a packaging block;

[0016] S14: placing the packaged block into a forging furnace for heating, taking it out, and mechanically pressing it to solidify it to obtain a finished product;

[0017] Before S12, the second metal material is further cleaned on its surface;

[0018] In the above S14, after mechanical pressing and solidification, the process also includes separating the metal cover 1 and the metal cover 2.

[0019] Preferably, the welding process is replaced by the following steps:

[0020] S21: Cutting the first metal material into a symbol C;

[0021] S22: placing the icon C in a metal shell with an opening at one end according to the design layout;

[0022] S23: using a filling tool to pour the powdered second metal material into the metal shell so as to fill all the gaps therein;

[0023] S24: using three metal covers that match one end of the metal shell to seal the open ends of the metal shell to obtain a combined block;

[0024] S25: The assembled block is placed in a forging furnace, heated, and then taken out and mechanically pressed to solidify it.

[0025] Preferably, the cutting method is one of wire cutting, laser cutting and water jet cutting;

[0026] The cutting method is one of wire cutting, laser cutting and water jet cutting.

[0027] Preferably: the graphic symbol A and the graphic symbol C are both Chinese characters, letters, symbols or patterns;

[0028] The pattern groove B is one of a Chinese character groove, a letter groove, a symbol groove or a pattern groove;

[0029] The number of the graphic symbols A, graphic slots B and graphic symbols C are all multiple, and the number of the graphic symbols A and the graphic slots A are the same.

[0030] Preferably: the heating temperature is 1450° to 1600°;

[0031] The mechanical pressing method is one of a hydraulic press, an air hammer, and a manual hammer.

[0032] Preferably, the sealing method is one of welding, adhesive and bundling.

[0033] Preferably, the first metal material and the second metal material are made of one of heat-resistant steel, stainless steel, low-carbon steel and low-alloy steel.

[0034] Preferably, the filling tool comprises a U-shaped base, a cover plate arranged on the top of the U-shaped base, and a barrel arranged above the cover plate; a feed pipe is fixedly connected to the top outer wall of the cover plate; and a feed channel is fixedly connected to the bottom end of the barrel to form a sliding fit with the inner wall of the feed pipe.

[0035] The inner walls of the feed pipe and the delivery channel are provided with a discharge portion;

[0036] The outer walls of both sides of the U-shaped base are provided with guide grooves, the inner walls of the guide grooves are slidably connected to sliding blocks, and the corresponding side surfaces of the two sliding blocks are fixedly connected to the same storage box; the bottom inner wall of the guide groove is fixedly connected to a fixed column inserted into the sliding block; the outer wall of the fixed column is provided with a second spring, and the two ends of the second spring are respectively fixedly connected to the guide groove and the corresponding side surface of the sliding block.

[0037] Preferably, the discharge portion includes a top support frame fixedly connected to the inner wall of the circumference of the feed pipe, a set of sliding columns inserted into the inner wall of the bottom of the feed channel, a stopper fixedly connected to the top of the sliding columns, a ring plate fixedly connected to the bottom end of the sliding columns, and a spring 1 sleeved on the outer wall of the sliding columns, and the two ends of the spring 1 are respectively fixedly connected to the corresponding side of the feed channel and the ring plate;

[0038] A bracket is fixedly connected to the outer wall of one side of the U-shaped base near one of the sliding blocks, and a motor is fixedly connected to the top outer wall of the bracket. The output end of the motor is connected to one end of a cam rotatably connected to the outer wall of one side of the U-shaped base through a connecting shaft.

[0039] The beneficial effects of the present invention are:

[0040] 1. The present invention manufactures matching graphic symbols on a first metal material and a second metal material, then splices the two together, then selects an appropriate temperature for firing and mechanically presses them into shape, thereby obtaining heterogeneous steel with graphic shapes on the surface and inside. While meeting the requirements for welding heterogeneous steel, it can be processed for aesthetics according to actual use needs, is easy to operate, and is easy to promote.

[0041] 2. In the present invention, the dissimilar steel produced by combining the first metal material and the second metal material has the properties and hardness of steel and can be used in any application where steel is used alone. Its scope of use includes metal parts of scissors, knives, swords and other products that use steel as structural components.

[0042] 3. In the present invention, the motor drives the cam to rotate, and the cam intermittently contacts and supports the sliding block to move upward during rotation, and then with the cooperation of spring 2, the sliding block drives the containing box to slide up and down in the guide groove. While realizing the function of automatic filling of powder materials, through intermittent support of the containing box, the powder material can be padded in the solid second metal material or metal shell during up and down bumps, thereby ensuring the filling density of the powder material.

[0043] 4. In the present invention, the containing box passively slides up and down in the guide groove, so that the feed pipe on the cover plate moves synchronously along the conveying channel. As the feed pipe approaches, the internal support frame moves up to extrude the ring plate, and then moves up and away from the outlet of the conveying channel through the sliding column support block, so that the powder material in the barrel passes through the outlet of the conveying channel and falls into the solid second metal material or metal shell in the containing box below the cover plate for filling. The starting and stopping are accurate and convenient, the canning environment is closed, and the splashing of powder caused by falling from the barrel outlet is effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic flow chart of Example 1 of a welding process for dissimilar steels proposed by the present invention;

[0045] Figure 2 This is a schematic flow chart of Example 2 of a welding process for dissimilar steels proposed by the present invention;

[0046] Figure 3 This is a schematic flow chart of Example 3 of a welding process for dissimilar steels proposed by the present invention;

[0047] Figure 4 This is a front structural diagram of a filling tool for a welding process of dissimilar steels proposed by the present invention;

[0048] Figure 5 A schematic diagram of the back structure of a filling tool for a welding process of dissimilar steels proposed by the present invention

[0049] Figure 6This is a schematic diagram of the cross-sectional structure of the feeding pipe and the conveying channel of the filling tool in the welding process of dissimilar steels proposed by the present invention.

[0050] In the figure: 1 U-shaped base, 2 cover plate, 201 feed pipe, 202 top support frame, 3 barrel, 301 conveying channel, 302 stopper, 303 slide column, 304 ring plate, 305 spring 1, 4 holding box, 401 sealing gasket, 402 stop door, 403 groove, 5 guide column, 6 spring 2, 7 slide block, 8 guide groove, 801 fixed column, 9 motor, 901 cam, 10 bracket. DETAILED DESCRIPTION

[0051] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0052] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0053] Example 1:

[0054] A welding process for dissimilar steels, such as Figure 1 As shown, the following steps are included:

[0055] S1: Cutting a first metal material into a symbol A;

[0056] Preferably, the cutting method can be one of wire cutting, laser cutting and water jet cutting.

[0057] Preferably, the icon A can be one of Chinese characters, letters, symbols or patterns.

[0058] More preferably, there may be multiple icons A.

[0059] S2: Opening a groove A in the second metal material that matches the symbol A;

[0060] Preferably, the cutting method can be one of wire cutting, laser cutting and water jet cutting.

[0061] Preferably, the number of the icons A and the number of the slots A are the same.

[0062] S3: embed the symbol A into the slot A to obtain a mosaic block;

[0063] S4: The interlocking block is placed in a forging furnace for heating, taken out, and mechanically pressed to solidify the block to obtain a finished product.

[0064] Preferably, the heating temperature is 1450° to 1600°; the appropriate temperature allows the first and second metals to complete bonding, but does not melt the first metal material and the second metal material into liquid or become too soft, so that the font can be deformed by maintaining a firm shape during subsequent pressing or hammering.

[0065] Preferably, the pressure of the mechanical pressing is sufficient to bond the symbol A and the second metal material together.

[0066] Furthermore, the mechanical pressing is achieved by using a hydraulic press, an air hammer, a manual hammer, etc.

[0067] The material of the first metal material and the second metal material is one of heat-resistant steel, stainless steel, low-carbon steel and low-alloy steel. In metallurgy, the first metal material and the second metal material always maintain different material steels.

[0068] Furthermore, before the step S3, the surface of the first metal material and the second metal material is cleaned to facilitate subsequent bonding.

[0069] When this embodiment is used, the first metal material is cut into a symbol A, and a groove A that is compatible with the symbol A is opened inside the second metal material. The symbol A is then completely inserted into the groove A of the different material, and after heating and firing, it is mechanically pressed to solidify, thereby obtaining a heterogeneous steel with the symbol A wrapped inside. The produced heterogeneous steel has the properties and hardness of steel and can be used in any application that uses steel alone. Its scope of use includes metal parts of scissors, knives, swords and other products that use steel as structural components.

[0070] Example 2:

[0071] A welding process for dissimilar steels, such as Figure 2 and Figure 4-6 As shown, in order to provide a welding method different from that of embodiment 1, the following steps are included:

[0072] S11: Opening a groove B inside the second metal material;

[0073] Preferably, there can be multiple slots B.

[0074] Preferably, the pattern groove B can be one of a Chinese character groove, a letter groove, a symbol groove or a pattern groove.

[0075] S12: sealing one end of the second metal material with a metal cover that matches one end of the second metal material;

[0076] Preferably, the sealing method can be one of welding, adhesive, bundling, etc.

[0077] S13: using a filling tool to pour the first metal material into the groove B and fill it firmly, and then using a second metal cover that matches one end of the second metal material to seal the other end of the second metal material to obtain a packaging block;

[0078] Preferably, the sealing method can be one of welding, adhesive, bundling, etc.

[0079] S14: The packaging block is placed in a forging furnace for heating, taken out, and mechanically pressed to solidify the block to obtain a finished product.

[0080] Preferably, the heating temperature is 1450° to 1600°; the appropriate temperature allows the first and second metals to complete bonding, but does not melt the first metal material and the second metal material into liquid or become too soft, so that the font can be deformed by maintaining a firm shape during subsequent pressing or hammering.

[0081] Preferably, the mechanical pressing is achieved by using a hydraulic press, an air hammer, a manual hammer, etc.

[0082] Furthermore, the first metal material is in powder form; and the second metal material is in solid form.

[0083] Furthermore, before the step S12, the surface of the second metal material is cleaned to facilitate subsequent bonding.

[0084] Furthermore, in the S14, after mechanical pressing and solidification, the step also includes separating the metal cover 1 and the metal cover 2.

[0085] The material of the first metal material and the second metal material is one of heat-resistant steel, stainless steel, low-carbon steel and low-alloy steel, etc. In metallurgy, the first metal material and the second metal material always maintain different material steels.

[0086] When this embodiment is used, a groove B is opened inside the second metal material, and then the powdered first metal material is introduced into the groove B, and the open end of the second metal material is sealed. Then, after heating and firing, it is mechanically pressed and solidified to obtain a heterogeneous steel with the first metal material wrapped inside. The produced heterogeneous steel has the properties and hardness of steel and can be used in any application where steel is used alone. Its scope of use includes metal parts of scissors, knives, swords and other products that use steel as structural components.

[0087] Example 3:

[0088] A welding process for dissimilar steels, such as Figure 3-6 As shown, in order to provide a welding method different from that of embodiments 1 and 2, the following steps are included:

[0089] S21: Cutting the first metal material into a symbol C;

[0090] Preferably, the cutting method can be one of wire cutting, laser cutting and water jet cutting.

[0091] Preferably, the icon C can be one of Chinese characters, letters, symbols or patterns.

[0092] More preferably, there may be multiple icons C.

[0093] S22: placing the icon C in a metal shell with an opening at one end according to the design layout;

[0094] Preferably, the material of the metal shell may be iron or steel.

[0095] S23: using a filling tool to pour the second metal material into the metal shell so as to fill all the gaps therein;

[0096] S24: using three metal covers that match one end of the metal shell to seal the open ends of the metal shell to obtain a combined block;

[0097] Preferably, the sealing method can be one of welding, adhesive, bundling, etc.

[0098] S25: The assembled block is placed in a forging furnace, heated, and then taken out and mechanically pressed to solidify it.

[0099] Preferably, the heating temperature is 1450° to 1600°; the appropriate temperature allows the first and second metals to complete bonding, but does not melt the first metal material and the second metal material into liquid or become too soft, so that the font can be deformed by maintaining a firm shape during subsequent pressing or hammering.

[0100] Preferably, the mechanical pressing is achieved by using a hydraulic press, an air hammer, a manual hammer, etc.

[0101] The first metal material is in solid form; the second metal material is in powder form.

[0102] When this embodiment is used, the first metal material is cut into symbols C and placed in a metal shell. Then, a powdered second metal material is filled in all gaps between the symbols C and the metal shell. Finally, the open end of the metal shell is sealed, heated and fired, and then mechanically pressed to solidify, thereby obtaining a heterogeneous steel with the symbols C wrapped inside. The produced heterogeneous steel has the properties and hardness of steel and can be used in any application where steel is used alone. Its scope of use includes metal parts of scissors, knives, swords and other products that use steel as structural components.

[0103] Example 4:

[0104] A welding process for dissimilar steels as described in Example 2-3, such as Figure 4-6As shown, in order to ensure that the powder is filled tightly; the filling tool includes a U-shaped base 1, a cover plate 2 mounted on the top of the U-shaped base 1 and a barrel 3 arranged above the cover plate 2 for loading material powder; the top outer wall of the cover plate 2 is fixed with a feed pipe 201 by bolts; the bottom end of the barrel 3 is fixed with a delivery channel 301 that forms a sliding fit with the inner wall of the feed pipe 201 by bolts; the powdery material in the barrel 3 is sequentially guided from the delivery barrel 3 and the feed pipe 201 to the containing box 4.

[0105] The inner walls of the feed pipe 201 and the delivery channel 301 are provided with a discharge portion, which includes a top support frame 202 fixed to the inner wall of the circumference of the feed pipe 201 by bolts, a group of sliding columns 303 inserted into the inner wall of the bottom of the delivery channel 301, a block 302 welded to the top of the sliding column 303 for blocking the outlet of the delivery channel 301, a ring plate 304 welded to the bottom end of the sliding column 303, and a spring 305 sleeved on the outer wall of the sliding column 303, and the two ends of the spring 305 are respectively welded to the corresponding side surfaces of the delivery channel 301 and the ring plate 304;

[0106] Furthermore, a bracket 10 is fixed to the outer wall of one side of the U-shaped base 1 near one of the sliding blocks 7 by bolts, and a motor 9 is fixed to the top outer wall of the bracket 10 by bolts, and the output end of the motor 9 is connected to one end of a cam 901 rotatably connected to the outer wall of one side of the U-shaped base 1 through a connecting shaft; when filling, the motor 9 is started to drive the cam 901 to rotate, and the cam 901 is intermittently contacted and supports the sliding block 7 to move up during rotation, and then, with the cooperation of the spring 2 6, the sliding block 7 drives the containing box 4 to slide up and down in the guide groove 8, so that the feed pipe 201 on the cover plate 2 is synchronously extended along the delivery channel 301 As the feeding pipe 201 approaches, the internal support frame 202 moves up to extrude the ring plate 304, and then the sliding column 303 supports the stop block 302 and moves it away from the outlet of the feeding channel 301, so that the powder material in the barrel 3 passes through the outlet of the feeding channel 301 and falls into the solid second metal material or metal shell in the holding box 4 under the cover plate 2 for filling. As the motor 9 is started, while realizing the automatic filling function of the powder material, the intermittent support of the holding box 4 is performed, so that the powder material can be padded in the solid second metal material or metal shell during the up and down bumps, thereby ensuring the filling density of the powder material.

[0107] The outer walls of both sides of the U-shaped base 1 are provided with guide grooves 8, the inner walls of the guide grooves 8 are slidably connected with sliding blocks 7, and the corresponding sides of the two sliding blocks 7 are welded with the same holding box 4 for loading solid materials;

[0108] Furthermore, a fixing column 801 inserted into the interior of the sliding block 7 is fixed to the bottom inner wall of the guide groove 8 by bolts; a spring 2 6 is sleeved on the outer wall of the fixing column 801, and the two ends of the spring 2 6 are respectively welded to the corresponding side of the guide groove 8 and the sliding block 7;

[0109] Furthermore, the bottom outer wall of the cover plate 2 is fixed with a guide post 5 by bolts to form a sliding fit with the top inner wall of the storage box 4;

[0110] Preferably, grooves 403 are provided on both outer walls of the storage box 4;

[0111] Preferably, a sealing gasket 401 is bonded to the top of the containing box 4 to improve the tightness of the connection between the containing box 4 and the cover 2; people insert their hands into the groove 403, and then pull down the containing box 4 so that it moves down along the guide column 5 and slowly separates from the cover 2, and then put the solid second metal material or metal shell to be contained in the powder material into the containing box 4 and let go. At this time, the containing box 4 will slowly move up in the guide groove 8 along the fixed column 801 under the elastic support of the spring 2 6 until the top of the containing box 4 fits with the bottom of the cover 2, thereby completing the closure of the opening.

[0112] Further preferably, the bottom inner wall of the holding box 4 is a conical surface to facilitate powder collection; the outer walls on both sides of the holding box 4 are clamped with a baffle 402; the baffle 402 can be opened later to discharge the collected powder falling into the holding box 4.

[0113] When using this embodiment, people insert their hands into the groove 403, then pull down the containing box 4 so that it moves down along the guide column 5 and slowly separates from the cover 2, and then put the solid second metal material or metal shell to be used to hold the powder material into the containing box 4 and let go. At this time, the containing box 4 will slowly move up in the guide groove 8 along the fixed column 801 under the elastic support of the spring 2 6 until the top of the containing box 4 is in contact with the bottom of the cover 2, thereby completing the closure of the opening. During filling, the starting motor 9 drives the cam 901 to rotate. During the rotation of the cam 901, it intermittently contacts and supports the sliding block 7 to move upward, and then, with the cooperation of the spring 2 6, the sliding block 7 drives the containing box 4 to slide up and down in the guide groove 8, so that the feeding pipe 201 on the cover plate 2 moves synchronously along the delivery channel 301. As the feeding pipe 201 approaches, the internal support frame 202 moves up and squeezes the ring plate 304, and then supports the stop block 302 through the sliding column 303 to move up and away from the outlet of the delivery channel 301, so that the powder material in the barrel 3 passes through the outlet of the delivery channel 301 and falls into the solid second metal material or metal shell for filling. As the motor 9 is started, while realizing the automatic filling function of the powder material, the intermittent support of the containing box 4 is used to make the powder material able to be padded in the solid second metal material or metal shell during the up and down bumps, thereby ensuring the filling density of the powder material.

[0114] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A welding process for dissimilar steels, characterized in that: The steps include: S11: Opening a groove B inside the second metal material; S12: sealing one end of the second metal material with a metal cover that matches one end of the second metal material; S13: using a filling tool to pour the powdered first metal material into the groove B to fill it firmly, and then using a second metal cover that matches one end of the second metal material to seal the other end of the second metal material to obtain a packaging block; S14: placing the packaged block into a forging furnace for heating, taking it out, and mechanically pressing it to solidify it to obtain a finished product; Before S12, the second metal material is further cleaned on its surface; In said S14, after mechanical pressing and solidification, the step further includes separating the metal cover 1 and the metal cover 2; Or replace the welding process with the following steps: S21: Cutting the first metal material into a symbol C; S22: placing the icon C in a metal shell with an opening at one end according to the design layout; S23: using a filling tool to pour the powdered second metal material into the metal shell so that all the gaps inside the metal shell are filled; S24: using three metal covers that match one end of the metal shell to seal the open ends of the metal shell to obtain a combined block; S25: placing the assembled block into a forging furnace for heating, taking it out, and mechanically pressing it to solidify it; The filling tool comprises a U-shaped base (1), a cover plate (2) arranged at the top of the U-shaped base (1), and a barrel (3) arranged above the cover plate (2); the top outer wall of the cover plate (2) is fixedly connected to a feed pipe (201); the bottom end of the barrel (3) is fixedly connected to a feed channel (301) that forms a sliding fit with the inner wall of the feed pipe (201); The inner walls of the feed pipe (201) and the delivery channel (301) are provided with discharge portions; The outer walls of both sides of the U-shaped base (1) are provided with guide grooves (8), the inner walls of the guide grooves (8) are slidably connected to the sliding blocks (7), and the corresponding side surfaces of the two sliding blocks (7) are fixedly connected to the same storage box (4); the inner wall of the bottom of the guide groove (8) is fixedly connected to a fixed column (801) inserted into the interior of the sliding block (7); the outer wall of the fixed column (801) is provided with a spring 2 (6), and the two ends of the spring 2 (6) are fixedly connected to the corresponding side surfaces of the guide groove (8) and the sliding block (7), respectively; The discharge portion includes a top support frame (202) fixedly connected to the inner wall of the circumference of the feed pipe (201), a group of slide columns (303) inserted into the inner wall of the bottom of the feed channel (301), a stopper (302) fixedly connected to the top of the slide column (303), a ring plate (304) fixedly connected to the bottom end of the slide column (303), and a spring (305) sleeved on the outer wall of the slide column (303), and the two ends of the spring (305) are respectively fixedly connected to the corresponding side of the feed channel (301) and the ring plate (304); A bracket (10) is fixedly connected to the outer wall of one side of the U-shaped base (1) near one of the sliding blocks (7), and a motor (9) is fixedly connected to the top outer wall of the bracket (10). The output end of the motor (9) is connected to one end of a cam (901) rotatably connected to the outer wall of one side of the U-shaped base (1) through a connecting shaft.

2. The welding process for dissimilar steels according to claim 1, characterized in that: The cutting method is one of wire cutting, laser cutting and water jet cutting; The cutting method is one of wire cutting, laser cutting and water jet cutting.

3. The welding process for dissimilar steels according to claim 2, characterized in that: The graphic symbol C is one of Chinese characters, letters, symbols or patterns; The pattern groove B is one of a Chinese character groove, a letter groove, a symbol groove or a pattern groove; There are multiple slots B and multiple icons C.

4. The welding process for dissimilar steels according to claim 1, characterized in that: The heating temperature is 1450° C. to 1600° C.; The mechanical pressing method is one of a hydraulic press, an air hammer, and a manual hammer.

5. The welding process for dissimilar steels according to claim 4, characterized in that: The sealing method is one of welding, adhesive and bundling.

6. The welding process for dissimilar steels according to claim 5, characterized in that: The material of the first metal material and the second metal material is one of heat-resistant steel, stainless steel, low carbon steel and low alloy steel.

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