Gas-electric vertical welding sliding block device

Abstract

The present application relates to the technical field of gas-electric vertical welding, and discloses a gas-electric vertical welding sliding block device, which comprises a sliding block and a gas chamber. The top of the sliding block is provided with a groove, and the side of the sliding block is provided with a contact surface for abutting against a plate to be welded. In the direction from the side of the sliding block away from the contact surface to the contact surface, the groove bottom is inclined downward. The sliding block is provided with an overflow hole, the top end of the overflow hole extends to the junction of the contact surface and the groove bottom, and the bottom end extends to the bottom surface of the sliding block. The length direction of the gas chamber is along the length direction of the groove, the gas chamber is connected to the end of the groove away from the contact surface, and the gas chamber is used for supplying protective gas to the plate to be welded. The gas-electric vertical welding sliding block device can avoid the accumulation of high-temperature splashes to cause the protective gas outlet of the gas chamber to be blocked, ensure the good protection of the protective gas on the welding pool, and avoid the liquid slag from being too deep to submerge most of the welding arc.

Description

Technical Field

[0001] This invention relates to the field of gas-electric vertical welding technology, and in particular to a gas-electric vertical welding slider device. Background Technology

[0002] Gas-electric vertical welding is a highly efficient, automated gas-shielded welding method applied to butt joints of plates in vertical welding positions. A ceramic backing is installed on the back of the welding bevel, and a slider forcing weld formation is located on the front of the bevel. The slider provides the shielding gas (CO2 gas) for the weld pool, and circulating cooling water continuously flows through the slider (cooling the high-temperature liquid weld pool and solid weld). This welding method enables single-sided, single-pass welding of plate butt joints with double-sided forming, resulting in high welding efficiency.

[0003] Gas-fired vertical welding uses flux-cored wire in conjunction with gas shielding. The welding process generates a large amount of slag, and the shielding method is a combined gas and slag protection. Under normal circumstances, a thin layer of molten metal slag covers the top of the weld pool. The thrust of the welding arc pushes the slag outwards, allowing the welder to observe the shape of the molten metal pool to judge the fusion quality between the molten metal pool and the steel base material, and adjust relevant welding parameters in a timely manner to ensure weld quality. A portion of the molten metal slag covers the upper part of the weld pool, while the remaining slag flows to the root (the gap between the steel plate and the ceramic backing) and the face (the gap between the steel plate and the slider) of the butt joint and is discharged. As the temperature decreases, it solidifies into solid slag, adhering to both sides of the weld.

[0004] The bottom surface of the shielding gas chamber is a horizontal planar structure. High-temperature spatter generated during welding will remain or adhere to this surface. As welding continues, the amount of high-temperature spatter accumulating on the bottom surface of the shielding gas chamber increases, leading to a continuous reduction in the cross-sectional area of ​​the gas outlet. This can cause blockage of the outlet, worsening the protection of the weld pool and negatively impacting weld quality. Furthermore, when the steel plate being welded is thick, the weld filler cross-sectional area increases, the welding speed decreases, and the amount of welding wire consumed per unit weld length increases (and the amount of liquid slag produced increases simultaneously). The ability to remove liquid slag through the gaps between the steel plate, backing, and slider is insufficient, causing the depth of the liquid slag to continuously increase. Excessively deep liquid slag can submerge most of the welding arc and cause violent boiling around the arc. The welder cannot observe the molten pool morphology, making it difficult to judge the fusion quality between the molten metal pool and the base steel, thus compromising weld quality.

[0005] Therefore, there is an urgent need for a gas-electric vertical welding slider device to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a gas-electric vertical welding slider device that avoids high-temperature spatter from clogging the protective gas outlet and prevents liquid welding slag from penetrating too deeply.

[0007] To achieve this objective, the present invention adopts the following technical solution: A gas-electric vertical welding slider device includes a slider and a gas chamber; The top of the slider is provided with a groove, and one side of the slider is provided with a contact surface for abutting against the plate to be welded. Along the direction from the side of the slider away from the contact surface to the contact surface, the bottom of the groove is inclined downward. The slider is provided with an overflow hole, the top of the overflow hole extends to the junction of the contact surface and the bottom surface of the groove, and the bottom end extends to the bottom surface of the slider. The length of the gas chamber is along the length of the groove, and the gas chamber is connected to the end of the groove away from the contact surface. The gas chamber is used to supply protective gas to the plate to be welded.

[0008] As an improvement to the above technical solution, the bottom surface of the groove is an arc surface, and the axis of the bottom surface of the groove extends along the length direction of the groove.

[0009] As an improvement to the above technical solution, a bottom groove is provided at one end of the bottom surface of the groove near the contact surface, and the bottom groove extends to the contact surface and communicates with the overflow hole.

[0010] As an improvement to the above technical solution, the width of the bottom groove gradually increases from the end away from the contact surface to the end closer to the contact surface.

[0011] As an improvement to the above technical solution, an air inlet pipe is also included, which is connected to the end of the gas chamber away from the contact surface, and the air inlet pipe is used to supply protective gas to the gas chamber.

[0012] As an improvement to the above technical solution, the gas chamber includes a tube and an end sealing plate. One end of the tube is connected to the groove of the slider. The end sealing plate seals the end of the tube away from the contact surface. One end of the air inlet pipe extends through the side wall of the tube into the tube. An air outlet is provided on the part of the air inlet pipe that extends into the tube. The air outlet is located on the side of the air inlet pipe facing the end sealing plate.

[0013] As an improvement to the above technical solution, the portion of the air inlet pipe located within the gas chamber extends horizontally, and the air outlet portion of the air inlet pipe is horizontally positioned, while the portion is angled downwards.

[0014] As an improvement to the above technical solution, it also includes a first circulating water connector and a second circulating water connector connected to the slider. The slider is provided with a cooling water channel, one end of which is connected to the first circulating water connector and the other end of which is connected to the second circulating water connector.

[0015] As an improvement to the above technical solution, the cooling water flow channel includes a horizontal flow channel, a first vertical flow channel, and a second vertical flow channel. The top end of the first vertical flow channel is connected to the first connector of the circulating water, and the bottom end is connected to one end of the horizontal flow channel. The top end of the second vertical flow channel is connected to the second connector of the circulating water, and the bottom end is connected to the other end of the horizontal flow channel.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The gas-electric vertical welding slider device of the present invention, by tilting the bottom surface of the groove of the slider, allows the high-temperature spatter generated during the welding process to flow towards the molten pool without remaining or adhering to the bottom surface of the groove. This avoids the accumulation of high-temperature spatter that could block the shielding gas outlet of the gas chamber, ensuring good protection of the weld pool by the shielding gas and preventing adverse effects on welding quality. Furthermore, when the thickness of the steel plate being welded is large, the weld filler cross-sectional area increases, the welding speed slows down, and the amount of welding wire consumed per unit welding length increases. When the ability to discharge liquid welding slag between the plate to be welded and the ceramic backing, and between the plate to be welded and the slider, is insufficient, excess liquid welding slag is discharged through an overflow hole located at the junction of the contact surface of the slider and the bottom surface of the groove. This further prevents blockage of the shielding gas outlet of the gas chamber and avoids excessive depth of liquid welding slag that could submerge most of the welding arc, thereby preventing violent boiling around the welding arc, avoiding welding process instability, and preventing unstable weld formation quality and mechanical properties. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the gas-electric vertical welding slider device provided in the embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the gas-electric vertical welding slider device provided in the embodiment of the present invention. Figure 2 ; Figure 3 This is a cross-sectional view of the gas-electric vertical welding slider device provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the protective gas flow direction of the gas-electric vertical welding slider device provided in the embodiment of the present invention.

[0018] In the picture: 1. Slider; 11. Groove; 12. Contact surface; 13. Overflow hole; 14. Bottom groove; 15. Cooling water flow channel; 151. Horizontal flow channel; 152. First vertical flow channel; 153. Second vertical flow channel; 2. Gas chamber; 21. Tube body; 211. Side wall; 22. End sealing plate; 3. Inlet pipe; 31. Outlet pipe; 4. First connector for circulating water; 5. Second connector for circulating water; 100. Welding torch; 200. Solid weld; 300. Molten pool of liquid metal; 400. Liquid welding slag; 500. Ceramic backing. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 invention based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0023] like Figures 1-3As shown, this embodiment provides a gas-electric vertical welding slider device, including a slider 1 and a gas chamber 2. The top of the slider 1 is provided with a groove 11, and one side of the slider 1 is provided with a contact surface 12 for abutting against the plate to be welded. Along the direction from the side of the slider 1 away from the contact surface 12 to the contact surface 12, the bottom of the groove 11 is inclined downwards. The slider 1 is provided with an overflow hole 13, the top of which extends to the junction of the contact surface 12 and the bottom surface of the groove 11, and the bottom end extends to the bottom surface of the slider 1. The length direction of the gas chamber 2 is along the length direction of the groove 11, and the gas chamber 2 is connected to the end of the groove 11 away from the contact surface 12. The gas chamber 2 is used to supply shielding gas to the welding area of ​​the plate to be welded. Specifically, the slider 1 in this embodiment is a copper slider.

[0024] In this embodiment, the gas-electric vertical welding slider device, by tilting the bottom surface of the groove 11 of the slider 1, allows the high-temperature spatter generated during welding to flow towards the molten pool instead of remaining or adhering to the bottom surface of the groove 11. This avoids the accumulation of high-temperature spatter that could clog the shielding gas outlet of the gas chamber 2, ensuring good protection of the weld pool by the shielding gas and preventing adverse effects on welding quality. Furthermore, when the thickness of the steel plate being welded is large, the welding filler cross-sectional area increases, the welding speed slows down, and the amount of welding wire consumed per unit welding length increases. When the ability to discharge liquid welding slag 400 between the plate to be welded and the ceramic backing, and between the plate to be welded and the slider 1, is insufficient, excess liquid welding slag 400 is discharged through the overflow hole 13 located at the junction of the contact surface 12 of the slider 1 and the bottom surface of the groove 11. This further prevents the shielding gas outlet of the gas chamber 2 from becoming clogged and prevents the liquid welding slag 400 from becoming too deep and submerging most of the welding arc, thereby preventing violent boiling around the welding arc, avoiding instability in the welding process, and preventing instability in weld formation quality and mechanical properties.

[0025] Furthermore, such as Figures 1-3 As shown, the bottom surface of the groove 11 is an arc surface, and the axis of the bottom surface of the groove 11 extends along the length of the groove 11. The arc-shaped bottom surface of the groove 11 facilitates the sliding of high-temperature splashes on the bottom surface of the groove 11, further preventing the accumulation of high-temperature splashes on the bottom surface of the groove 11. In this embodiment, an anti-splatter agent is applied to the bottom surface of the groove 11 to further prevent high-temperature splashes from adhering to the bottom surface of the groove 11.

[0026] Furthermore, such as Figures 1-3 As shown, a bottom groove 14 is provided at one end of the bottom surface of the groove 11 near the contact surface 12. The bottom groove 14 extends to the contact surface 12 and communicates with the overflow hole 13. The bottom groove 14 allows high-temperature splashes reaching the bottom surface of the groove 11 to converge towards the overflow hole 13, facilitating the discharge of high-temperature splashes from the overflow hole 13.

[0027] Furthermore, such as Figures 1-3As shown, the width and depth of the bottom groove 14 gradually increase from the end furthest from the contact surface 12 toward the end closest to the contact surface 12, to further facilitate the convergence of high-temperature splashes on the bottom surface of the groove 11 toward the overflow hole 13. The length of the bottom groove 14 extends along the extension direction of the groove 11, and the width of the bottom groove 14 is perpendicular to the extension direction of the groove 11.

[0028] Optionally, such as Figures 1-3 As shown, the gas-electric vertical welding slider device provided in this embodiment also includes an air inlet pipe 3. The air inlet pipe 3 is connected to the end of the gas chamber 2 away from the contact surface 12. The air inlet pipe 3 is used to supply protective gas to the gas chamber 2.

[0029] Furthermore, such as Figures 1-3 As shown, the gas chamber 2 includes a tube 21 and an end sealing plate 22. One end of the tube 21 is connected to the groove 11 of the slider 1. The end sealing plate 22 seals the end of the tube 21 away from the contact surface 12. One end of the air inlet pipe 3 extends through the side wall 211 of the tube 21 into the tube 21. An air outlet 31 is provided on the portion of the air inlet pipe 3 extending into the tube 21. The air outlet 31 is located on the side of the air inlet pipe 3 facing the end sealing plate 22. This prevents high-temperature splashes from falling into the air outlet 31 and causing blockage.

[0030] Furthermore, such as Figures 1-4As shown, the portion of the air inlet pipe 3 located within the gas chamber 2 extends horizontally and is perpendicular to the extension direction of the groove 11. In this embodiment, the height direction of the slider 1 is vertical. The air outlet 31 on the air inlet pipe 3 is partially horizontally positioned and partially angled downwards. Along the extension direction of the air inlet pipe 3, the horizontally positioned air outlet 31 and the angled downwards air outlet 31 are alternately positioned. In this embodiment, the outlet of the air inlet pipe 3 is alternately set horizontally and obliquely downward. The shielding gas ejected obliquely downward is reflected by the end sealing plate 22 and flows rapidly close to the arc-shaped bottom surface of the gas chamber 2. During the flow, it generates an obliquely downward pushing force on the high-temperature spatter on the arc-shaped bottom surface of the groove 11. The gravity of the high-temperature spatter on the arc-shaped bottom surface of the groove 11 also generates an obliquely downward component force. Furthermore, the anti-spatter agent pre-applied to the arc-shaped bottom surface of the groove 11 effectively reduces the friction between the high-temperature spatter and the arc-shaped bottom surface. Under the combined action of forces, the high-temperature spatter eventually falls back along the arc-shaped bottom surface to the weld pool or overflow hole 13, effectively preventing the blockage of the shielding gas outlet of the gas chamber. In addition, the shielding gas ejected horizontally is reflected by the end sealing plate 22 and then sprayed horizontally or parallel to the top plate of the shielding gas chamber 2 towards the weld pool. This ensures that the top area of ​​the gas chamber 2 is under positive pressure, preventing the shielding gas flowing obliquely downward from generating a suction effect that draws air into the shielding gas, thus avoiding poor protection of the weld pool and the generation of porosity defects. Since the horizontally arranged air outlet 31 and the obliquely downward arranged air outlet 31 on the intake pipe 3 are alternately arranged along the extension direction of the intake pipe 3, the cross-section perpendicular to the axial direction of the intake pipe 3 can only pass through one of the air outlets 31 on the intake pipe 3, and cannot pass through a horizontally arranged air outlet 31 and an obliquely downward arranged air outlet 31 at the same time. Therefore Figure 4 The cross-section of the central air intake pipe 3 shows only a horizontally positioned air outlet 31.

[0031] Optionally, such as Figure 2 As shown, the gas-electric vertical welding slider device provided in this embodiment also includes a first circulating water connector 4 and a second circulating water connector 5 connected to the slider 1. A cooling water channel 15 is provided inside the slider 1. One end of the cooling water channel 15 is connected to the first circulating water connector 4, and the other end is connected to the second circulating water connector 5. The cooling water in the cooling water channel 15 plays a role in cooling and reducing the temperature of the molten metal pool.

[0032] Furthermore, such as Figure 1 and Figure 2As shown, the cooling water flow channel 15 includes a horizontal flow channel 151, a first vertical flow channel 152, and a second vertical flow channel 153. The top end of the first vertical flow channel 152 is connected to the first circulating water connector 4, and the bottom end is connected to one end of the horizontal flow channel 151. The top end of the second vertical flow channel 153 is connected to the second circulating water connector 5, and the bottom end is connected to the other end of the horizontal flow channel 151. The inlet and outlet of the circulating cooling water path of the slider 1 are located in the upper middle part of the slider 1. The circulating cooling water first flows into the slider 1 from one of the interfaces, then flows vertically downward to the lower part of the slider 1, then flows horizontally, then flows vertically upward to the upper part of the slider 1, and finally flows out of the slider 1 from the other interface. The main cooling area of ​​the circulating cooling water is the lower middle part of slider 1. This area has a large indirect contact area with the circulating cooling water, a sufficient cooling range, and a good cooling effect. This allows the fully molten high-temperature liquid metal and slag to quickly crystallize and solidify to form a weld. At the same time, it reduces the high-temperature residence time of the weld structure, preventing the liquid metal from flowing from the lower end of slider 1 and causing welding interruptions. It also refines the grain structure of the weld structure and improves the overall mechanical properties of the weld. Furthermore, the effect of the circulating cooling water in indirectly cooling the upper part of the weld pool through slider 1 is weakened, which can effectively prevent poor fusion at the edges of this area due to excessive heat loss, ensuring the quality of weld fusion.

[0033] like Figure 3 As shown, the working principle of the gas-electric vertical welding slider device in this embodiment is as follows: When the welding torch 100 welds the plate to be welded, a liquid metal pool 300 is formed at the weld gap of the plate to be welded. After the liquid metal pool 300 is cooled by the slider 1, a solid weld 200 is formed. Excess liquid welding slag 400 flows out through the gap between the plate to be welded and the ceramic backing, the gap between the plate to be welded and the slider 1, and the overflow hole 13. The high-temperature spatter that splashes into the groove 11 of the slider 1 flows back to the liquid metal pool 300 or is directly discharged through the overflow hole 13.

[0034] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A gas-electric vertical welding slider device, characterized in that, Includes a slider (1) and a gas chamber (2); The top of the slider (1) is provided with a groove (11), and one side of the slider (1) is provided with a contact surface (12) for abutting against the plate to be welded. Along the direction from the side of the slider (1) away from the contact surface (12) to the contact surface (12), the bottom of the groove (11) is inclined downward. The slider (1) is provided with an overflow hole (13). The top end of the overflow hole (13) extends to the junction of the contact surface (12) and the bottom surface of the groove (11), and the bottom end extends to the bottom surface of the slider (1). The length direction of the gas chamber (2) is along the length direction of the groove (11), and the gas chamber (2) is connected to one end of the groove (11) away from the contact surface (12). The gas chamber (2) is used to supply protective gas to the plate to be welded. The bottom surface of the groove (11) is an arc surface, and the axis of the bottom surface of the groove (11) extends along the length direction of the groove (11); A bottom groove (14) is provided at one end of the bottom surface of the groove (11) near the contact surface (12). The bottom groove (14) extends to the contact surface (12) and communicates with the overflow hole (13). The gas-electric vertical welding slider device also includes an air inlet pipe (3), which is connected to one end of the gas chamber (2) away from the contact surface (12) and is used to supply protective gas to the gas chamber (2).

2. The gas-electric vertical welding slider device according to claim 1, characterized in that, The width of the bottom groove (14) gradually increases from the end furthest from the contact surface (12) toward the end closest to the contact surface (12).

3. The gas-electric vertical welding slider device according to claim 1, characterized in that, The gas chamber (2) includes a tube (21) and an end sealing plate (22). One end of the tube (21) is connected to the groove (11) of the slider (1). The end sealing plate (22) seals the end of the tube (21) away from the contact surface (12). One end of the air inlet pipe (3) extends through the side wall (211) of the tube (21) into the tube (21). An air outlet (31) is provided on the part of the air inlet pipe (3) that extends into the tube (21). The air outlet (31) is located on the side of the air inlet pipe (3) facing the end sealing plate (22).

4. The gas-electric vertical welding slider device according to claim 3, characterized in that, The portion of the air inlet pipe (3) located within the gas chamber (2) extends horizontally, and the air outlet (31) on the air inlet pipe (3) is partially horizontal and partially angled downward.

5. The gas-electric vertical welding slider device according to any one of claims 1 or 2, characterized in that, It also includes a first circulating water connector (4) and a second circulating water connector (5) connected to the slider (1). A cooling water channel (15) is provided inside the slider (1). One end of the cooling water channel (15) is connected to the first circulating water connector (4), and the other end is connected to the second circulating water connector (5).

6. The gas-electric vertical welding slider device according to claim 5, characterized in that, The cooling water flow channel (15) includes a horizontal flow channel (151), a first vertical flow channel (152) and a second vertical flow channel (153). The top end of the first vertical flow channel (152) is connected to the first circulating water connector (4), and the bottom end is connected to one end of the horizontal flow channel (151). The top end of the second vertical flow channel (153) is connected to the second circulating water connector (5), and the bottom end is connected to the other end of the horizontal flow channel (151).

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