Manufacture method of high-intensity welded special pipe

Abstract

The invention relates to a manufacture method of a high-intensity welded special pipe. The manufacture method comprises the following steps of: a, striping, namely computing the width, and striping a steel plate coil according to the outer diameter and the wall depth of a steel pipe; b, welding, namely forming current at a position in which high-frequency voltage is contacted with the steel plate by the high-frequency voltage, and generating high temperature through the resistance of the edge of the steel plate, so as to enable the edge of the steel plate to be melted, and extruding the steel plate by an extruding roller, so as to enable the edge of the steel plate to be melted together; f, detecting flaw, namely inspecting the quality of a weld joint by eddy current inspection; g, cooling, namely quickly cooling by using the means in which a front section is cooled by air and a rear section is cooled by water; h, sizing, namely renovating a circular pipe by a mouth-shaped mould to form quadrangle; k, finally detecting, namely finally detecting the steel pipe, and storing in a storehouse after the steel pipe is detected to be qualified. The manufacture method provided by the invention is suitable for the manufacture of the high-intensity welded special pipe.

Description

technical field [0001] The invention relates to the field of processing and manufacturing methods for steel pipe materials, in particular to a method for manufacturing high-strength welded special-shaped pipes. Background technique [0002] Special-shaped steel pipe refers to long steel with non-circular cross-sectional shape or non-equal wall thickness, which is widely used in structural components such as automobiles, trains, airplanes, ships and space launchers, mechanical parts, petrochemical industry, geological drilling, textile machinery, etc. , radio communications, medical and health, military and other fields. The use of special-shaped steel pipes to manufacture ring parts can improve the utilization rate of materials, simplify the manufacturing process, and save materials and processing hours. At present, the traditional special-shaped tube manufacturing method has a complicated process, requires a lot of manpower and material resources, and has a high cost. Co...

AI Technical Summary

Problems solved by technology

At present, the traditional special-shaped tube manufacturing method has a complicated process, requires more manpower and material resources, and has a higher cost.