Steel pipe embedded type bidirectional welding process

Abstract

The invention discloses a steel pipe embedded type bidirectional welding process, and belongs to the field of welding. According to the steel pipe embedded type bidirectional welding process, through the arrangement of a bidirectional welding assisting pipe, during high-temperature welding, an outer wrapping welding piece can form a radial welding seam on the sections of two steel pipes, inner welding powder blocks are melted and make contact with the inner walls of the steel pipes after being heated, and a transverse welding seam can be formed inside. Compared the prior art in which only a radial welding seam is formed, the welding strength is remarkably improved, and the welded steel pipes are not prone to cracking or breaking. Meanwhile, in cooperation with a temporarily sealed environment in transverse welding pipes, high-thermal-conductivity gas expands after being heated. On one hand, the molten inner welding powder blocks are pushed through metal elastic pieces, then welding layers formed by the molten inner welding powder blocks and the inner walls of the steel pipes are more compact and stable, and the welding strength is further improved; and on the other hand, the high-thermal-conductivity gas pushes hollow pre-sealing balls to make the hollow pre-sealing balls separated from the transverse welding pipes to finish the airtightness of the transverse welding pipes, and the situation that the transverse welding pipes explode due to excessive expansion of the expanded high-thermal-conductivity gas is effectively avoided.

Description

technical field [0001] The invention relates to the field of welding, and more specifically relates to a steel pipe embedded bidirectional welding process. Background technique [0002] Welding, also known as welding, is a manufacturing process and technique that uses heat, high temperature, or pressure to join metal or other thermoplastic materials such as plastics. [0003] There are many sources of energy for modern welding, including gas flames, electric arcs, lasers, electron beams, friction, and ultrasound. In addition to its use in factories, welding can also be performed in a variety of environments, such as in the field, underwater and in space. Welding, wherever it occurs, can pose a hazard to the operator, so proper precautions must be taken when welding. Possible injuries caused by welding to the human body include burns, electric shock, visual impairment, inhalation of toxic gases, and excessive ultraviolet radiation. [0004] Regarding the welding of two ste...

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Problems solved by technology

[0004] Regarding the welding of two steel pipes, in the prior art, the two steel pipes are usually welded at the cross section close to each other, and the connection is only realized through this place, but in this way, one welding in the radial direction leads to a decrease in the overall welding strength, When cracks occur in the weld, the two steel pipes are easily broken

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