1Cr18Ni9Ti 奥氏体不锈钢管焊接工艺

摘要

1Cr18Ni9Ti 钢材由于 Cr 元素含量较高，焊接时极易氧化。1Cr18Ni9Ti奥氏体不锈钢管焊接时，当采用TIG焊焊接，由于管材焊缝背部的高温金属无法进行有效保护，焊缝背部的高温金属与空气中的氧产生剧烈反应，导致焊缝根部的严重氧化和烧损。本文采用TIG焊进行焊接，可有效避免焊缝根部氧化，实现焊接。%1Cr18Ni9Ti steel because of the high content of Cr element, welding is easy to be oxidized. Welding of 1Cr18Ni9Ti austenitic stainless steel pipe, when using TIG welding, due to the high temperature metal pipe weld back can not be effective protection, the high temperature metal and weld back in the air oxygen reacts violently, causing severe oxidation and burning loss of the weld root. This paper uses the TIG welding, which can effectively avoid the weld root oxidation, welding.