Arc assisted activating TIG welding process for stainless steels

被引：0

作者：

Huang, Yong ^{[1
]}

Fan, Ding ^{[1
]}

Lin, Tao ^{[1
]}

Luo, Huansheng ^{[1
]}

机构：

[1] State Key Laboratory of Gansu Advanced New Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China

来源：

Hanjie Xuebao/Transactions of the China Welding Institution | 2009年 / 30卷 / 10期

关键词：

Chemical activation - Gas metal arc welding - Laser beam welding - Production efficiency - Welds - Inert gas welding - Shielding - Tungsten - Gas welding - Welding electrodes - Mixing - Stainless steel;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A new activating TIG welding process for stainless steels called AA-TIG (arc assisted activating TIG) welding is proposed. The weld surface is pre-melted by low current tungsten arc with activating mixing shielding gas before normal TIG welding, which can dramatically improve weld penetration and production efficiency and ensure the repeatability of welding process and automatic welding. O2+Ar, CO2+Ar and air are respectively used as the shielding gas of pre-melting with low current tungsten electrode arc for single-arc AA-TIG welding; compared with conventional TIG welding, all of the three mixing gases can increase weld penetration and decrease weld width; all of the weld appearances are fine. When CO2+Ar mixing gas is used as the shielding gas of low current tungsten electrode arc in dual-arc AA-TIG welding, the weld forming is fine, the weld penetration is improved dramatically, but the weld penetration increases as the distance between the welding torches decreases.

引用

页码：1 / 4

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