An embedded two-way welding process for steel pipes

Abstract

The invention discloses a steel pipe embedded two-way welding process, which belongs to the field of welding. A steel pipe embedded two-way welding process, through the arrangement of two-way welding aid pipes, during high-temperature welding, the outer welding sheet can be formed on the cross-section of two steel pipes Radial welding seam, after heating, the inner welding powder block melts and contacts with the inner wall of the steel pipe, and can form a transverse weld seam inside. Compared with the radial weld seam in the prior art, the welding strength is significantly improved, and the welded steel pipe is not easy to weld. Cracking and breaking, and at the same time, in conjunction with the temporarily sealed environment in the horizontal welded pipe, the high thermal conductivity gas expands after being heated. On the one hand, the molten inner welding powder is pushed by the metal shrapnel, so that the welding layer formed by the molten inner welding powder and the inner wall of the steel pipe is more dense. It is stable and further improves the welding strength. On the other hand, the high thermal conductivity gas pushes the hollow pre-sealed ball to separate it from the horizontal welded pipe and contact the sealing performance of the horizontal welded pipe, effectively preventing the high thermal conductivity gas from expanding and causing the transverse welded pipe to burst due to excessive expansion.

Description

A kind of steel pipe embedded two-way welding process technical field [0001] The present invention relates to the field of welding, and more particularly, to a steel pipe embedded bidirectional welding process. Background technique Welding, also known as welding, is the joining of metals or other thermoplastic materials by means of heat, high temperature, or high pressure. The manufacturing process and technology of materials such as plastics. [0003] There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasonic Wait. In addition to being used in factories, welding can be performed in a variety of environments, such as in the field, underwater, and in space. wherever Wherever welding is possible, it may bring danger to the operator, so appropriate protective measures must be taken when welding. welding to people Possible injuries to the body include burns, electric shock, visual impairment, inhalation...

AI Technical Summary

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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