A roller type titanium alloy resistance welding gas protection device

Abstract

The utility model proposes a roller-type titanium alloy resistance welding gas protection device, which belongs to the technical field of welding equipment. It solves the problem that the existing fixed titanium alloy roller-type resistance welding protection device cannot meet the quality requirements of titanium alloy welding joints. It includes a base, an air inlet joint, a universal tube and a nozzle, one end of the universal tube is connected to the nozzle, and the other end is connected to the air inlet joint, the air inlet joint is connected to the base, and the air inlet joint is provided with an air inlet, and the air inlet is connected to the gas cylinder. The base is detachably connected to the side of the resistance welding robot, and the universal tube is adjusted so that the nozzle is located at the welding position of the roller-type titanium alloy resistance welding workpiece. It is mainly used for gas protection of roller-type titanium alloy resistance welding.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding equipment, in particular to a roller type titanium alloy resistance welding gas protection device. Background Art

[0002] Titanium and titanium alloys are light in weight, have high specific strength, high thermal strength, good corrosion resistance, good low-temperature performance, and low thermal conductivity. They are extremely excellent structural materials and are known as "ocean metals". They are widely used in aerospace, petroleum engineering, marine equipment, medical equipment and other fields.

[0003] With the rapid economic development and continuous progress in science and technology, the demand for deep-sea exploration is increasing. As the depth of seawater increases, high pressure, low temperature and seawater corrosion have stricter requirements on the quality of marine equipment components. As an excellent structural metal, titanium alloy components are increasingly used in various fields of marine engineering, such as pressure hulls, condensers, rectifiers, inverter housings, heat exchanger manufacturing, etc. These key components must meet the requirements of good corrosion resistance, high pressure resistance, long service time, long service distance, and the ability to operate on the seabed deep enough. There is an urgent need for efficient, high-quality and high-reliability titanium alloy structural welding technology.

[0004] The embrittlement of titanium alloy welded joints is mainly caused by hydrogen, oxygen, nitrogen gas and carbon dissolved in the weld. When the temperature reaches 250℃, it begins to absorb hydrogen, at 400℃, it begins to absorb oxygen, and at 600℃, it begins to absorb nitrogen. The ability of titanium and its alloys to absorb impurity gases increases with increasing temperature. The dissolution of H, O, and N easily causes micropores and brittle compounds to form in the weld, making the material brittle. Oxygen and nitrogen are both stable elements of the α phase in TC4 titanium alloy. When their content is low, gas atoms will be dissolved in the lattice in the form of interstitial or substitution, changing the original lattice arrangement of the material and improving the strength and hardness of the titanium alloy.

[0005] Existing titanium alloy roller resistance welding protection devices are all externally fixed, the output of shielding gas is not stable enough, and as the shielding gas content increases during welding, the gas exists in a supersaturated form, which is easy to form intergranular compounds, seriously deteriorating the performance of titanium alloy welded joints. Utility Model Content

[0006] In view of this, the utility model aims to propose a roller-type titanium alloy resistance welding gas protection device to solve the problem that the existing fixed titanium alloy roller-type resistance welding protection device cannot meet the quality requirements of titanium alloy welding joints.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a roller-type titanium alloy resistance welding gas protection device, which includes a base, an air inlet joint, a universal tube and a nozzle, one end of the universal tube is connected to the nozzle, and the other end is connected to the air inlet joint, the air inlet joint is connected to the base, the air inlet joint is provided with an air inlet, and the air inlet is connected to the gas cylinder, the base is detachably connected to the side of the resistance welding robot, and the universal tube is adjusted so that the nozzle is located at the welding position of the roller-type titanium alloy resistance welding workpiece.

[0008] Furthermore, an air gun valve is provided at the air inlet.

[0009] Furthermore, the nozzle and the universal tube are connected in a detachable manner.

[0010] Furthermore, the universal tube and the air intake joint are connected in a detachable structure.

[0011] Furthermore, the air inlet connector and the base are connected in a detachable manner.

[0012] Furthermore, the base is a magnetic base, a clamping base or a vacuum adsorption base.

[0013] Furthermore, the nozzle is a duckbill nozzle, a circular nozzle, a fan-shaped nozzle or an annular nozzle.

[0014] Furthermore, the gas cylinder contains inert gas.

[0015] Furthermore, the resistance welding robot is provided with two resistance rollers, on which the first workpiece and the second workpiece are respectively provided, and the first workpiece and the second workpiece are butt-jointed, and the butt joint is the welding position.

[0016] Furthermore, a protection belt is arranged on the outer side of the resistance roller.

[0017] Compared with the prior art, the beneficial effects of the utility model are: the utility model can control the shielding gas, improve the strength and toughness of the titanium alloy head, and provide reliable technical support for ensuring the full service of the titanium alloy resistance welding head.

[0018] The utility model can adjust the use position of the magnetic base according to different welding conditions, manually switch to adjust the air gun valve, control the inlet and outlet gas volume of the connected gas cylinder, thereby adjusting the air flow size, the universal tube can adjust the deflection direction, and the gas nozzle can be replaced according to different working conditions to achieve the effect of adjusting the blowing angle.

[0019] The utility model has the characteristics of high modularity. Different accessories can be replaced arbitrarily under different welding conditions to cope with various welding methods and welding conditions. The flow, direction and blowing angle of the protective gas can be more accurately controlled to achieve the effect of improving the strength, hardness and wear resistance of the roller-type high titanium alloy resistance welding workpiece, and improve the economic efficiency of production. The design is reasonable, reliable, good in applicability and wide in application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a roller-type titanium alloy resistance welding gas protection device described in the utility model;

[0022] Figure 2 This is a schematic diagram of the planar structure of a roller-type titanium alloy resistance welding gas protection device described in the utility model;

[0023] Figure 3 The utility model is a schematic diagram of the installation structure of a roller-type titanium alloy resistance welding gas protection device.

[0024] In the figure:

[0025] 1-base, 2-air gun valve, 3-air inlet, 4-universal tube, 5-nozzle, 6-resistance welding robot, 7-resistance roller, 8-first workpiece, 9-second workpiece, 10-protective belt. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely explain the technical solutions in the embodiments of the utility model. It should be noted that the embodiments and features in the embodiments of the utility model can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0027] See also Figure 1-3 The present embodiment is described as a roller-type titanium alloy resistance welding gas protection device, which includes a base 1, an air inlet joint, a universal tube 4 and a nozzle 5, wherein one end of the universal tube 4 is connected to the nozzle 5, and the other end is connected to the air inlet joint, the air inlet joint is connected to the base 1, the air inlet joint is provided with an air inlet 3, the air inlet 3 is connected to a gas cylinder, the base 1 is detachably connected to the side of a resistance welding robot 6, and the universal tube 4 is adjusted so that the nozzle 5 is located at the welding position of the roller-type titanium alloy resistance welding workpiece.

[0028] The roller-type titanium alloy resistance welding gas protection device described in this embodiment can adjust the use position of the base 1 according to different welding conditions, so that the base 1 can work at any position, and has strong adaptability to different resistance welding robots 6. The base 1 is a magnetic base, a clamping base or a vacuum adsorption base, and the present embodiment is preferably a magnetic base.

[0029] The roller-type titanium alloy resistance welding gas protection device described in this embodiment can adjust the blowing direction by adjusting the universal tube to meet the gas protection requirements under different working conditions. The effect of adjusting the blowing angle can be achieved by replacing the gas nozzle 5 according to different working conditions. The nozzle 5 is a duckbill nozzle, a circular nozzle, a fan-shaped nozzle or a ring nozzle. The duckbill nozzle is preferably used in this embodiment.

[0030] The roller-type titanium alloy resistance welding gas protection device of this embodiment is provided with an air gun valve 2 at the air inlet 3, and the gas cylinder contains inert gas. The air gun valve 2 is adjusted by a manual switch to control the gas inlet and outlet of the connected gas cylinder, thereby adjusting the size of the airflow sprayed from the nozzle 5.

[0031] In this embodiment, the nozzle 5 and the universal tube 4, the universal tube 4 and the air inlet joint, and the air inlet joint and the base 1 are all detachable connection structures. It has a highly modular feature, and different accessories can be replaced arbitrarily under different welding conditions to cope with various welding methods and welding conditions, by more accurately controlling the flow, direction, and blow angle of the protective gas. In order to achieve the effect of improving the strength, hardness, and wear resistance of the roller-type high-titanium alloy resistance welding workpiece, and improve the economic efficiency of production. The design is reasonable, reliable, and has excellent applicability and a wide range of applications.

[0032] In this embodiment, the resistance welding robot 6 is provided with two resistance rollers 7, on which a first workpiece 8 and a second workpiece 9 are respectively provided, and the first workpiece 8 and the second workpiece 9 are butted against each other, and the butt joint is a welding position. A protective belt 10 is provided on the outer side of the resistance roller 7.

[0033] The embodiments of the utility model disclosed above are only used to help explain the utility model. The embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.

Claims

1. A roller type titanium alloy resistance welding gas protection device, characterized in that: The invention comprises a base (1), an air inlet joint, a universal tube (4) and a nozzle (5); one end of the universal tube (4) is connected to the nozzle (5), and the other end is connected to the air inlet joint; the air inlet joint is connected to the base (1); an air inlet (3) is provided on the air inlet joint; the air inlet (3) is connected to a gas cylinder; the base (1) is detachably connected to the side of a resistance welding robot (6); the universal tube (4) is adjusted so that the nozzle (5) is located at the welding position of a roller-type titanium alloy resistance welding workpiece.

2. A roller type titanium alloy resistance welding gas protection device according to claim 1, characterized in that: An air gun valve (2) is provided at the air inlet (3).

3. A roller type titanium alloy resistance welding gas protection device according to claim 1, characterized in that: The nozzle (5) and the universal tube (4) are connected in a detachable manner.

4. A roller type titanium alloy resistance welding gas protection device according to claim 1 or 3, characterized in that: The universal tube (4) and the air intake joint are connected in a detachable manner.

5. A roller type titanium alloy resistance welding gas protection device according to claim 4, characterized in that: The air inlet connector and the base (1) are connected in a detachable manner.

6. A roller type titanium alloy resistance welding gas protection device according to claim 5, characterized in that: The base (1) is a magnetic base, a clamping base or a vacuum adsorption base.

7. The roller type titanium alloy resistance welding gas protection device according to claim 5, characterized in that: The nozzle (5) is a duckbill nozzle, a circular nozzle, a fan-shaped nozzle or an annular nozzle.

8. The roller type titanium alloy resistance welding gas protection device according to claim 1, characterized in that: The gas cylinder contains inert gas.

9. The roller type titanium alloy resistance welding gas protection device according to claim 1, characterized in that: The resistance welding robot (6) is provided with two resistance rollers (7), on which a first workpiece (8) and a second workpiece (9) are respectively provided, and the first workpiece (8) and the second workpiece (9) are butt-jointed, and the butt joint is a welding position.

10. A roller type titanium alloy resistance welding gas protection device according to claim 9, characterized in that: A protective belt (10) is arranged on the outer side of the resistance roller (7).

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