Penetration increase of AISI 304 using ultrasonic assisted tungsten inert gas welding

Authors: Sun, Q. J.; Lin, S. B.; Yang, C. L.; Zhao, G. Q.

Source: Science and Technology of Welding & Joining, Volume 14, Number 8, November 2009 , pp. 765-767(3)

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Abstract:

Ultrasonic assisted tungsten inert gas (U-TIG) welding method was developed. Both U-TIG and conventional TIG welding of AISI 304 stainless steel with 5 mm thickness were experimentally studied in this paper. The results show that the penetration depth is increased up to 300% for weld made with U-TIG welding compared with conventional TIG welding. Ultrasonic energy enhances arc push force, causes a continual high frequency oscillation in the arc plasma and increases welding penetration. These effects are thought to be responsible for enhancing the welding efficiency and improving the appearance of stainless steel weld joints.

Keywords: U-TIG; AISI 304; WELDING; INCREASED PENETRATION

Document Type: Rapid Communication

DOI: http://dx.doi.org/10.1179/136217109X12505932584772

Affiliations: State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China

Publication date: 2009-11-01

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