Processing method for compound tube of stainless steel and lined copper

Abstract

The invention discloses a processing method for a compound tube of stainless steel and lined copper. The processing method comprises the following steps: first, manufacturing a lined copper cavity; then manufacturing a stainless steel bushing; then assembling the lined copper cavity and the stainless steel bushing; then welding the assembled lined copper cavity and stainless steel bushing; and finally, cutting off sealing end covers at two ends of the lined copper cavity to obtain the compound tube of stainless steel and lined copper. The processing method has the beneficial effects that localdeformation positions on a compound welding surface between the outer wall of the lined copper cavity and the inner wall of the stainless steel bushing can be fully attached during welding, so that asilver layer on the outer wall of the lined copper cavity can be tightly attached to a nickel layer on the inner wall of the stainless steel bushing fully, the welding rate and the welding quality ofthe compound surface are improved, the heat conductivity and the compound strength of the welded compound tube are improved greatly, the wall thickness of the compound tube is more uniform, and the high precision compounding demand can be met.

Description

technical field [0001] The invention relates to the technical field of processing stainless steel and copper-lined composite pipes, in particular to a processing method for stainless steel and copper-lined composite pipes. Background technique [0002] Stainless steel and copper-lined composite pipes have good thermal conductivity and are more and more widely used in daily life. The existing stainless steel and copper-lined composite pipes are generally processed by mechanical rolling and compounding. Since there may be local deformation (such as pits, etc.) on the welding composite surface between the lined copper and stainless steel, the traditional mechanical The rolling composite method cannot make the locally deformed position on the welding composite surface between the lined copper and the stainless steel fit closely, resulting in welding failure due to insufficient contact of the locally deformed part on the welding composite surface during welding, thereby reducing ...

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Problems solved by technology

[0003] Aiming at the problems existing in the prior art, the main purpose of the present invention is to provide a method for processing a stainless steel and copper-lined composite pipe, aiming at solving the problem of the composite pipe processed by the existing method of processing stainless steel and copper-lined composite pipe. , thermal conductivity and composite strength are poor, and the wall thickness is uneven, which cannot meet the requirements of high precision.

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