An argon-filled sealing protection device suitable for pipeline argon arc welding
A sealing protection and argon arc welding technology, which is used in devices for supplying/removing shielding gas, arc welding equipment, welding equipment, etc., which can solve the problem that the argon gas in the pipeline air pipeline is difficult to reach the specified concentration, the processing time of processing enterprises is prolonged, and the production is affected. efficiency and other issues, to achieve the effect of shortening the argon filling time, improving the welding quality, and reducing the manufacturing cost
Active Publication Date: 2021-10-08
CHINA MERCHANTS HEAVY IND JIANGSU +2
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However, the limitations of this operation method are also very obvious. When the diameter of the pipeline to be processed is large, the volume of the internal air chamber will also increase accordingly, and the argon filling time will increase significantly (for example, for a pipeline to be processed with a diameter of 168mm, its It takes more than 25 minutes to fill the argon), which will prolong the processing time of the processing enterprise, disrupt the production rhythm, and seriously affect the production efficiency
At the same time, the larger pipe diameter also makes it easy to generate eddy currents when filling the pipe to be processed with argon, the air inside the pipe is difficult to be completely exhausted, and the argon in the pipe is difficult to reach the specified concentration. Welding operations are carried out under such conditions , the welds inside the pipeline will be oxidized to varying degrees, which will directly affect the final welding quality
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[0034] The invention proposes an argon-filled sealing protection device suitable for pipeline argon arc welding, and the specific scheme is as follows.
[0035] Such as Figure 1~Figure 2 As shown, an argon-filled sealing protection device suitable for pipeline argon arc welding can be used in the process of argon arc welding of two non-ferrous metal pipelines, including front clamp expansion mechanism, rear clamp expansion mechanism and gas circuit drive mechanism, both the front clamp expansion mechanism and the rear clamp expansion mechanism are connected to the air path drive mechanism and driven by its control.
[0036] There is a processing gap on the outer peripheral side of the front clamp expansion mechanism, and an argon gas delivery channel 11 is arranged inside the air circuit driving mechanism, and one end of the argon gas delivery channel 11 communicates with the processing gap. During the argon arc welding butt joint process of two sections of nonferrous metal ...
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The invention discloses an argon-filled sealing protection device suitable for pipeline argon arc welding, which can be used in the argon arc welding butt joint process of two non-ferrous metal pipelines, including a front clamp expansion mechanism, a rear clamp expansion mechanism and a gas circuit Drive mechanism, during the argon arc welding butt joint process, the front clamp expansion mechanism completes the expansion and fixation of the front pipeline, the rear clamp expansion mechanism completes the expansion and fixation of the rear pipeline, and the processing gap on the outer peripheral side of the front clamp expansion mechanism It is located on the inner peripheral side of the seam and cooperates with the pipe walls of the non-ferrous metal pipeline in the front section and the non-ferrous metal pipeline in the rear section to jointly form an argon-filled gas chamber, and argon gas is sent into it through the argon gas delivery channel. The invention is aimed at the argon arc welding process of non-ferrous metal pipelines, especially large-diameter pipelines, which can minimize the volume of the gas chamber inside the pipeline, shorten the argon filling time, reduce the amount of argon gas, and improve the production efficiency of processing enterprises at the same time The application cost of argon arc welding technology is reduced.
Description
technical field [0001] The invention relates to an auxiliary device used in the welding process, in particular to an argon-filled sealing protection device suitable for pipeline argon arc welding, which belongs to the technical field of welding processing. Background technique [0002] Argon arc welding is a welding technology that uses argon as a shielding gas, also known as argon shielded welding. This technology is based on the principle of ordinary arc welding, using argon to protect metal welding materials, and using high current to The metal welding material melts into a liquid state on the base material to be welded to form a molten pool, thereby realizing the metallurgical bond between the base material to be welded and the metal welding material. And because argon gas is continuously supplied during high-temperature fusion welding, so that the welding material will not be in contact with oxygen in the air, thereby effectively preventing the oxidation of the welding ...
Claims
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IPC IPC(8): B23K9/32B23K9/16
CPCB23K9/16B23K9/325
Inventor韦刚梅先志陈旭东孙学荣王永强康攀勤周文
OwnerCHINA MERCHANTS HEAVY IND JIANGSU