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Date of Publication:2020-01-01

Journal:Zhongguo Jixie Gongcheng/China Mechanical Engineering

Volume:31

Issue:17

Page Number:2137-2141

ISSN No.:1004-132X

Abstract:A low-power pulsed laser induced metal active gas(MAG) arc hybrid welding tests in overhead positions were carried out for 5mm thick E36 high strength steel plates. The results show that heat input of laser induced MAG arc hybrid welding is 29% lower than that of single arc welding. By reducing weld pool sizes, hybrid welding may effectively inhibit the formation of concave defects, and then increase the processsing parameter ranges. Tensile tests and bending tests show that the welding joints without internal concave defects have good static tensile strength and bending load. Static tensile strength of the welding joints with internal concave is equivalent to the base metal, but the maximum bending load is significantly reduced. © 2020, China Mechanical Engineering Magazine Office. All right reserved.

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