Welding method of three-layer dual-face stainless steel composite board

Abstract

The invention discloses a welding method of a three-layer dual-face stainless steel composite board and belongs to the technical field of welding. The welding method is used for welding the stainlesssteel+ carbon steel+ stainless steel three-layer dual-face stainless steel composite board, the thickness of the stainless steel is not smaller than 2 mm, and the overall thickness is smaller than 15mm. The welding method comprises the following steps that oxide on the surface of the composite board is removed; a groove is not formed before welding, and two welding boards are connected in the same horizontal face; stainless steel welding materials are adopted for spot welding; and a keyhole TIG welding method is adopted for one-time welding forming, no filler wire is filled in the welding process, and protective gas is high-purity argon gas. The welding method of the three-layer dual-face stainless steel composite board has the advantages of being high in welding efficiency, good in welding quality and simple in process.

Description

technical field [0001] The invention belongs to the field of welding technology, in particular to a welding method for a three-layer double-sided stainless steel composite plate. Background technique [0002] The three-layer double-sided stainless steel composite plate is stainless steel + carbon steel + stainless steel combined by metallurgy or mechanical means, which not only has the mechanical properties of carbon steel, but also ensures the corrosion resistance of both sides of the composite plate, while saving costs. It has broad application prospects in chemical industry, seawater desalination and environmental governance. [0003] The current welding method of stainless steel clad plate is mainly for double-layer stainless steel clad plate, that is, stainless steel + carbon steel clad plate. The specific welding process is to separate the clad layer and the base layer with different welding materials. , The welding material needs to be replaced during the welding pro...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a welding method for a three-layer double-sided stainless steel composite plate, which solves the need to open a gap before welding in the welding process of stainless steel + carbon steel + stainless steel three-layer double-sided stainless steel composite plate, and needs to replace welding materials during the welding process , the welding cost is high, and multi-layer welding adopts small current and low heat input, which reduces the welding efficiency and other issues

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