Axial plate type integrated welding technology for pipes

Abstract

The invention discloses an axial plate type integrated welding technology for pipes. A metal heating plate is fixed between the welding end surfaces of the two pipes, the pipes are fully fused on theshaft end surfaces after being electrified, heated and pressurized, the pipes are axially fused into a whole, the strength of pipe bodies can be achieved, the areas of the welding end surfaces are increased, the axial tensile strength of pipe connection openings can be enhanced, and the ring stiffness of the pipe connection openings can also be improved. According to the axial plate type integrated welding technology for the pipes, the problem that when the pipes with relatively-thick pipe walls and relatively-large pipe weights are connected, the condition that the tensile strength of the connecting positions is low occurs easily is solved, the problem that the welding surfaces of the pipes are torn due to dragging by large-tonnage ships is solved in the field of marine pipeline laying, and the axial plate type integrated welding technology is suitable for general popularization and use.

Description

technical field [0001] The invention belongs to the technical field of pipe welding, and in particular relates to a pipe axial plate-type integrated welding process. Background technique [0002] Usually the current pipe fittings connections include socket electrofusion welding technology, socket type single / double rubber ring connection technology, two-way socket elastic seal, hot melt butt welding, and heat shrinkable sleeve welding technology. [0003] In the case of connecting the pipes first and then the overall construction, if the wall of the pipe involved is thicker and the weight of the pipe body is heavier, none of the above connection methods can make the connection end face have better bending resistance and good axial direction. Tensile strength, which may cause the joint surface to tear or bend. Contents of the invention [0004] The object of the present invention is to provide an axial plate-type integrated welding process for pipes, so as to solve the pro...

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Problems solved by technology

[0003] In the case of connecting the pipes first and then the overall construction, if the wall of the pipe involved is thicker and the weight of the pipe body is heavier, none of the above connection methods can make the connection end face have better bending resistance and good axial direction. Tensile strength, which may cause the connecting surface to tear or bend

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