Gas protection dragging cover device for titanium and titanium alloy argon arc welding pipe plate fillet weld

Abstract

The utility model provides a gas protection dragging cover device for titanium and titanium alloy argon arc welding pipe plate fillet weld, and belongs to the technical field of titanium and titanium alloy welding manufacturing. The utility model provides a titanium and titanium alloy argon arc welding pipe plate fillet weld gas protection drag cover, including shell, gas quick coupling, sealing edge, welding gun, the shell is provided with inner plate, outer plate, top plate and rear plate, inner plate and outer plate are arc structure, inner plate and outer plate upper end are covered by top plate, one arc end of inner plate and outer plate are connected through rear plate, and the welding gun is provided with gas quick coupling. The lower end of the shell and the other arc-shaped end opposite to the rear plate are opened; the gas quick connector is arranged on the shell, and one end of the gas quick connector extends into the shell and is used for conveying protective gas into the shell; a sealing edge is arranged on the shell along the edge of the lower end of the shell; according to the pipe plate corner joint welding structure, the welding quality can be effectively improved, and welding seam oxidation is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of titanium and titanium alloy welding manufacturing, and more specifically, it relates to a gas protection drag cover device for the argon arc welding pipe-plate fillet weld of titanium and titanium alloy. Background Technique

[0002] Titanium and titanium alloy are widely used in the fields of aerospace, ocean engineering, and biomedical due to their characteristics of light weight, high strength, and corrosion resistance. However, during the welding process, titanium or titanium alloy is extremely easy to react with nitrogen, hydrogen, and oxygen in the air. Once titanium or titanium alloy reacts with nitrogen, hydrogen, and oxygen, the mechanical properties and corrosion resistance of the weld after welding will drop sharply. In order to avoid the reaction of titanium and titanium alloy with these gases during the welding process, it is necessary to tightly protect the titanium and titanium alloy weld during the entire welding process and cooling process.

[0003] At present, the gas protection drag cover for argon arc welding of titanium alloy mainly involves two types: plate-plate butt joint and pipe-pipe butt joint, and there is a lack of gas protection drag cover for the welding structure of pipe-plate fillet joint. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a gas protection drag cover device for the argon arc welding pipe-plate fillet weld of titanium and titanium alloy, so as to solve the technical problem of the lack of gas protection drag cover for the argon arc welding of titanium alloy with the welding structure of pipe-plate fillet joint in the existing technology.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a gas protection drag cover device for the argon arc welding pipe-plate fillet weld of titanium and titanium alloy, including a shell, a gas quick connector, a sealing edge, and a welding torch. The shell is provided with an inner plate, an outer plate, a top plate, and a rear plate. The inner plate and the outer plate are arc-shaped structures. The upper ends of the inner plate and the outer plate are covered by the top plate. One arc-shaped end of the inner plate and the outer plate is connected by the rear plate. The lower end of the shell and the other arc-shaped end opposite to the rear plate are open. The gas quick connector is arranged on the shell, and one end of the gas quick connector extends into the shell for conveying protective gas into the shell. A sealing edge is arranged on the shell along the lower edge of the shell. The sealing edge is used to contact the plate body and the pipe body to be welded to jointly seal the lower end of the shell with the plate body and the pipe body. The welding torch is connected to the shell and is located at the open arc-shaped end of the shell.

[0006] Combined with the above technical solution, in a possible implementation manner, a flow disturbance net is arranged in the shell, and the flow disturbance net is located below the gas quick connector.

[0007] Combined with the above technical solution, in a possible implementation manner, the flow disturbance net is a multi-layer wire mesh structure.

[0008] Combined with the above technical solution, in a possible implementation manner, a perforated plate is further arranged in the shell, and the perforated plate is arranged below the flow disturbance net.

[0009] Combined with the above technical solution, in a possible implementation, an arc-shaped notch is provided on the top plate of the housing, and the welding torch is located at the arc-shaped notch and is rotatably connected to the housing.

[0010] Combined with the above technical solution, in a possible implementation, a pipe clamp is provided at the notch of the housing. The pipe clamp is connected to the notch through a rotating structure, and the welding torch is connected to the pipe clamp.

[0011] Combined with the above technical solution, in a possible implementation, the edge seal is a flexible and high-temperature resistant part.

[0012] Combined with the above technical solution, in a possible implementation, the edge seal protrudes from the outer sides of the inner plate, the outer plate and the rear plate.

[0013] Combined with the above technical solution, in a possible implementation, the spoiler net is an arc-shaped strip structure, and the spoiler net is connected to the inner plate, the outer plate and the rear plate.

[0014] Combined with the above technical solution, in a possible implementation, the perforated plate is an arc-shaped strip structure, and the perforated plate is connected to the inner plate, the outer plate and the rear plate.

[0015] The beneficial effects of the gas protection drag shield device for the tube-sheet fillet weld of argon arc welding of titanium and titanium alloys provided by the present utility model are as follows: Compared with the prior art, the present utility model is provided with a housing, which includes an inner plate, an outer plate, a top plate and a rear plate. The inner plate and the outer plate are arc-shaped structures. The upper ends of the inner plate and the outer plate are covered by the top plate. One arc-shaped end of the inner plate and the outer plate is connected by the rear plate. The lower end of the housing and the other arc-shaped end opposite to the rear plate are open. Edge seals are provided along the lower edge of the housing. During use, the edge seals on the housing contact the plate body and the tube body, so that the housing covers the joint of the tube body and the plate body to be welded. A gas quick connector is provided on the housing, and a welding torch is provided at the open arc-shaped end of the housing. Protective gas can be conveyed into the space inside the housing through the gas quick connector, so that the protective gas fills the inside of the housing. During welding, the protective gas can effectively protect the weld and prevent the weld from oxidizing. The present utility model can effectively improve the welding quality for the tube-sheet corner joint welding structure and avoid the oxidation of the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1Schematic diagram of the use of the gas protection drag shield device for the argon arc welding pipe-plate fillet weld of titanium and titanium alloys provided by the embodiment of the present utility model;

[0018] Figure 2 Schematic diagram of the structure of the gas protection drag shield device for the argon arc welding pipe-plate fillet weld of titanium and titanium alloys provided by the embodiment of the present utility model;

[0019] Figure 3 Schematic three-dimensional structure diagram of the drag shield adopted by the embodiment of the present utility model.

[0020] Among them, the reference numerals in the figure are as follows:

[0021] 1. Plate body; 2. Pipe body; 3. Shell; 301. Top plate; 302. Inner plate; 303. Outer plate; 4. Sealing edge; 5. Welding torch; 6. Turbulence net; 7. Perforated plate; 8. Gas quick connector; 9. Pipe clamp. Detailed implementation manners

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The specific embodiments described herein are only used to explain the present utility model, and are not used to limit the present utility model. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0023] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation shown in the figure of the device. For example, if the device in the figure is inverted, the device described as "above other devices or structures" or "over other devices or structures" will be positioned "below other devices or structures" or "under other devices or structures" afterwards. Therefore, the exemplary term "above..." can include both orientations of "above..." and "below...". The device can also be positioned in other different ways, and corresponding explanations are made for the spatial relative descriptions used here.

[0024] Now, the gas protection drag shield device for the argon arc welding pipe-plate fillet weld of titanium and titanium alloys provided by the present utility model will be described.

[0025] Such as Figure 1 and Figure 2As shown in the figure, the first embodiment of the present utility model provides a gas protection drag shield device for the fillet weld of the tube-sheet in argon arc welding of titanium and titanium alloy, which includes a housing 3, a gas quick connector 8, a sealing edge 4, and a welding torch 5. The housing 3 is provided with an inner plate 302, an outer plate 303, a top plate 301, and a rear plate. The inner plate 302 and the outer plate 303 are arc-shaped structures. The upper ends of the inner plate 302 and the outer plate 303 are covered by the top plate 301. One arc-shaped end of the inner plate 302 and the outer plate 303 is connected by the rear plate. The lower end of the housing 3 and the other arc-shaped end opposite to the rear plate are open. The gas quick connector 8 is arranged on the housing 3, and one end of the gas quick connector 8 extends into the housing 3 for conveying protective gas into the housing 3. The sealing edge 4 is arranged on the housing 3 along the lower edge of the housing 3. The sealing edge 4 is used to contact the plate body 1 and the tube body 2 to be welded, so as to jointly seal the lower end of the housing 3 with the plate body 1 and the tube body 2. The welding torch 5 is connected to the housing 3 and is located at the open arc-shaped end of the housing 3.

[0026] The gas protection drag shield device for the fillet weld of the tube-sheet in argon arc welding of titanium and titanium alloy provided in this embodiment, compared with the prior art, the present utility model is provided with a housing 3. The housing 3 includes an inner plate 302, an outer plate 303, a top plate 301, and a rear plate. The inner plate 302 and the outer plate 303 are arc-shaped structures. The upper ends of the inner plate 302 and the outer plate 303 are covered by the top plate 301. One arc-shaped end of the inner plate 302 and the outer plate 303 is connected by the rear plate. The lower end of the housing 3 and the other arc-shaped end opposite to the rear plate are open. The sealing edge 4 is arranged on the housing 3 along the lower edge of the housing 3. When in use, the sealing edge 4 on the housing 3 contacts the plate body 1 and the tube body 2, so that the housing 3 covers the joint of the tube body 2 and the plate body 1 to be welded. The gas quick connector 8 is arranged on the housing 3, and the welding torch 5 is arranged at the open arc-shaped end of the housing 3. The protective gas can be conveyed into the space in the housing 3 through the gas quick connector 8, so that the protective gas fills the housing 3. During welding, the protective gas can effectively protect the weld seam and avoid oxidation of the weld seam. The present utility model can effectively improve the welding quality for the tube-sheet fillet welding structure and avoid oxidation of the weld seam.

[0027] In this embodiment, the radian and curvature of the inner plate 302 and the outer plate 303 of the housing 3 are different. The inner plate 302 of the housing 3 has the same curvature as the tube body 2 to be welded, and the outer plate 303 of the housing 3 has the same curvature as the plate body 1 to be welded, so as to ensure the tightness of gas protection during the welding process. According to the tube body 2 with different diameters, different radians and curvatures are constructed to adapt to the welding protection of different tube-sheet structures.

[0028] In this embodiment, the protective gas can be argon.

[0029] As Figure 3 shown, a specific embodiment provided by the present utility model on the basis of the first embodiment is as follows: A spoiler net 6 is arranged in the housing 3, and the spoiler net 6 is located below the gas quick connector 8.

[0030] In this embodiment, a spoiler net 6 is arranged inside the housing 3, which can gather the protective gas inside the housing 3.

[0031] As Figure 3 shown, a specific embodiment provided by the present utility model on the basis of the first embodiment is as follows: the spoiler net 6 is a multi-layer wire mesh structure.

[0032] In this embodiment, the spoiler net 6 being a multi-layer wire mesh structure can gather the protective gas more evenly inside the housing 3.

[0033] As Figure 3 shown, a specific embodiment provided by the present utility model on the basis of the first embodiment is as follows: a perforated plate 7 is further arranged inside the housing 3, and the perforated plate 7 is arranged below the spoiler net 6.

[0034] In this embodiment, the perforated plate 7 is arranged below the spoiler net 6. So that under the action of the spoiler net 6, the evenly gathered protective gas is shunted again by the perforated plate 7, and the protective gas is guided to be distributed around the weld bead, effectively avoiding oxidation of the weld bead and improving the welding quality.

[0035] As Figures 2 to 3 shown, a specific embodiment provided by the present utility model on the basis of the above embodiment is as follows: an arc-shaped notch is provided on the top plate 301 of the housing 3, the welding torch 5 is located at the arc-shaped notch, and is rotatably connected to the housing 3.

[0036] In this embodiment, the outer diameter dimension of the arc-shaped notch on the top plate 301 of the housing 3 is the same as that of the ceramic nozzle of the welding torch 5, which can ensure that there is no intermediate partition in the gas protection between the housing 3 and the ceramic nozzle, forming a unified whole, and playing a better role in protecting the weld bead.

[0037] As Figures 2 to 3 shown, a specific embodiment provided by the present utility model on the basis of the above embodiment is as follows: a pipe clamp 9 is provided at the notch of the housing 3, the pipe clamp 9 is connected to the notch through a rotating structure, and the welding torch 5 is connected to the pipe clamp 9.

[0038] In this embodiment, the pipe clamp 9 is connected to the housing 3 through a rotating structure at the notch of the housing 3, the welding torch 5 is connected to the pipe clamp 9, and the rotating structure can adjust the angle of the welding torch 5 to ensure that the welding torch 5 can perform welding at different operating angles.

[0039] In this embodiment, the rotating structure can be a ball hinge structure in the prior art.

[0040] As Figure 3 shown, a specific embodiment provided by the present utility model on the basis of the above embodiment is as follows: the edge seal 4 is a flexible and high-temperature resistant part.

[0041] In this embodiment, the bottom edge sealing 4 of the housing 3 is made of a flexible high-temperature resistant material, which is convenient for flexible adjustment during the welding process, wraps the shielding gas in a certain area without divergence, and will not cause damage or deformation of the edge sealing 4 due to the high temperature of welding, ensuring the welding protection effect. At the same time, when there are jitter, offset and other actions during manual welding, causing the offset of the housing 3 and insufficient gas protection, the edge sealing 4 made of high-temperature resistant flexible material can play a corrective role to avoid the leakage of the shielding gas and improve the welding quality.

[0042] As Figure 3 shown, a specific embodiment provided by the present utility model on the basis of the above embodiment is as follows: The edge sealing 4 protrudes from the outer sides of the inner plate 302, the outer plate 303 and the rear plate.

[0043] As Figure 3 shown, a specific embodiment provided by the present utility model on the basis of the above embodiment is as follows: The spoiler net 6 is in an arc-shaped strip structure, and the spoiler net 6 is connected to the inner plate 302, the outer plate 303 and the rear plate.

[0044] As Figure 3 shown, a specific embodiment provided by the present utility model on the basis of the above embodiment is as follows: The perforated plate 7 is in an arc-shaped strip structure, and the perforated plate 7 is connected to the inner plate 302, the outer plate 303 and the rear plate.

[0045] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A gas protection drag cover device for argon arc welding of titanium and titanium alloy tube-plate fillet welds, characterized in that, Comprising: A housing (3), provided with an inner plate (302), an outer plate (303), a top plate (301) and a rear plate. The inner plate (302) and the outer plate (303) are of arc-shaped structures. The upper ends of the inner plate (302) and the outer plate (303) are covered by the top plate (301). One arc-shaped end of the inner plate (302) and the outer plate (303) is connected by the rear plate. The lower end of the housing (3) and the other arc-shaped end opposite to the rear plate are open; A gas quick connector (8), provided on the housing (3), and one end of the gas quick connector (8) extends into the housing (3) for delivering a protective gas into the housing (3); A sealing edge (4), arranged on the housing (3) along the lower edge of the housing (3). The sealing edge (4) is used to contact a plate body (1) and a pipe body (2) to be welded so as to jointly seal the lower end of the housing (3) with the plate body (1) and the pipe body (2); A welding torch (5), connected to the housing (3) and located at the open arc-shaped end of the housing (3).

2. The gas protection trailing shield device for the argon arc welding of titanium and titanium alloy tube-plate fillet welds according to claim 1, wherein: A flow disturbance net (6) is arranged inside the housing (3), and the flow disturbance net (6) is located below the gas quick connector (8).

3. The gas protection trailing shield device for the argon arc welding pipe-plate fillet weld of titanium and titanium alloy as described in claim 2, characterized in that: The flow disturbance net (6) is a multi-layer wire mesh structure.

4. The gas shielded trailing shroud device for the argon arc welding of titanium and titanium alloy tube-sheet fillet welds according to claim 3, characterized in that: A perforated plate (7) is further arranged inside the housing (3), and the perforated plate (7) is arranged below the flow disturbance net (6).

5. The gas protection trailing shield device for the argon arc welding of titanium and titanium alloy tube-plate fillet welds as described in claim 1, characterized in that: An arc-shaped notch is provided on the top plate (301) of the housing (3). The welding torch (5) is located at the arc-shaped notch and is rotatably connected to the housing (3).

6. The gas protection trailing shield device for the argon arc welding of titanium and titanium alloy tube-sheet fillet welds according to claim 5, characterized in that: A pipe clamp (9) is provided at the notch of the housing (3). The pipe clamp (9) is connected to the notch through a rotating structure, and the welding torch (5) is connected to the pipe clamp (9).

7. The gas protection trailing shield device for the argon arc welding of titanium and titanium alloy tube-sheet fillet welds as described in claim 1, wherein: The sealing edge (4) is a flexible and high-temperature resistant component.

8. The gas protection trailing shield device for the argon arc welding of titanium and titanium alloy tube-sheet fillet welds according to claim 1, wherein: The sealing edge (4) protrudes from the outer sides of the inner plate (302), the outer plate (303) and the rear plate.

9. The gas protection trailing shield device for the argon arc welding of titanium and titanium alloy tube-sheet fillet welds as claimed in claim 4, wherein: The flow disturbance net (6) is of an arc-shaped strip structure, and the flow disturbance net (6) is connected to the inner plate (302), the outer plate (303) and the rear plate.

10. The gas protection drag cover device for the argon arc welding pipe-plate fillet weld of titanium and titanium alloy according to claim 9, characterized in that: The perforated plate (7) is of an arc-shaped strip structure, and the perforated plate (7) is connected to the inner plate (302), the outer plate (303) and the rear plate.

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