High Efficiency and Quality of Multi-Pass Tandem Gas Metal Arc Welding for Thick Al 5083 Alloy Plates

doi:10.1007/s12204-018-1977-y

Journal of Shanghai Jiao Tong University (Science) ›› 2019, Vol. 24 ›› Issue (2): 148-157.doi: 10.1007/s12204-018-1977-y

High Efficiency and Quality of Multi-Pass Tandem Gas Metal Arc Welding for Thick Al 5083 Alloy Plates

JIANG Zhao (姜朝), HUA Xueming* (华学明), HUANG Lijin (黄立进),WU Dongsheng (吴东升), LI Fang (李芳), CAI Yan (蔡艳)

(Shanghai Key Laboratory of Materials Laser Processing and Modification; Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China)

出版日期:2019-04-30 发布日期:2019-04-01
通讯作者: HUA Xueming* (华学明) E-mail:xmhua@sjtu.edu.cn

High Efficiency and Quality of Multi-Pass Tandem Gas Metal Arc Welding for Thick Al 5083 Alloy Plates

JIANG Zhao (姜朝), HUA Xueming* (华学明), HUANG Lijin (黄立进),WU Dongsheng (吴东升), LI Fang (李芳), CAI Yan (蔡艳)

(Shanghai Key Laboratory of Materials Laser Processing and Modification; Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China)

Online:2019-04-30 Published:2019-04-01
Contact: HUA Xueming* (华学明) E-mail:xmhua@sjtu.edu.cn

摘要/Abstract

摘要： Multi-pass tandem gas metal arc welding (TGMAW) for Al 5083 alloy plates with 30mm thickness is carried out to study its high efficiency and high quality. The welding process is evaluated by high-speed photographs and electrical signals. The deposition rate and welding time are calculated to characterize the welding efficiency. The bead formation, porosity, microstructure and mechanical properties are tested and analyzed. The results indicate that though arc deflection occurs due to the electromagnetic interference between two arcs during TGMAWprocess, it does not affect the welding process stability significantly. The deposition rate and welding time of TGMAW process are about 15 g/min larger and about 16.7% less than those of gas metal arc welding (GMAW) process respectively, accompanied by the reduction of heat input. The TGMAW welded joint has less porosity and more refined microstructure to contribute to the improvement of mechanical properties (micro-hardness, tensile strength and ductility). It can be concluded that TGMAW process yields excellent performance of welded joint with improved welding efficiency, which makes it extremely practical during welding of thick plates.

关键词: multi-pass welding, tandem gas metal arc welding (TGMAW), welding efficiency, porosity, microstructure, mechanical property

Abstract: Multi-pass tandem gas metal arc welding (TGMAW) for Al 5083 alloy plates with 30mm thickness is carried out to study its high efficiency and high quality. The welding process is evaluated by high-speed photographs and electrical signals. The deposition rate and welding time are calculated to characterize the welding efficiency. The bead formation, porosity, microstructure and mechanical properties are tested and analyzed. The results indicate that though arc deflection occurs due to the electromagnetic interference between two arcs during TGMAWprocess, it does not affect the welding process stability significantly. The deposition rate and welding time of TGMAW process are about 15 g/min larger and about 16.7% less than those of gas metal arc welding (GMAW) process respectively, accompanied by the reduction of heat input. The TGMAW welded joint has less porosity and more refined microstructure to contribute to the improvement of mechanical properties (micro-hardness, tensile strength and ductility). It can be concluded that TGMAW process yields excellent performance of welded joint with improved welding efficiency, which makes it extremely practical during welding of thick plates.

Key words: multi-pass welding, tandem gas metal arc welding (TGMAW), welding efficiency, porosity, microstructure, mechanical property

中图分类号:

TG 44

JIANG Zhao (姜朝), HUA Xueming* (华学明), HUANG Lijin (黄立进),WU Dongsheng (吴东升), LI Fa. High Efficiency and Quality of Multi-Pass Tandem Gas Metal Arc Welding for Thick Al 5083 Alloy Plates[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(2): 148-157.

JIANG Zhao (姜朝), HUA Xueming* (华学明), HUANG Lijin (黄立进),WU Dongsheng (吴东升), LI Fang (李芳), CAI Yan (蔡艳). High Efficiency and Quality of Multi-Pass Tandem Gas Metal Arc Welding for Thick Al 5083 Alloy Plates[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(2): 148-157.

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High Efficiency and Quality of Multi-Pass Tandem Gas Metal Arc Welding for Thick Al 5083 Alloy Plates

High Efficiency and Quality of Multi-Pass Tandem Gas Metal Arc Welding for Thick Al 5083 Alloy Plates

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