Single-pass hybrid laser-MIG welding of 8-mm-thick pure copper (T2) without preheating: weld geometry and integrity

• Published in: International journal of advanced manufacturing technology Vol. 91; no. 9-12; pp. 3749 - 3773
• Main Authors: Yang, Jian-Nan, Zhang, Lin-Jie, Ning, Jie, Bai, Qing-Lin, Yin, Xian-Qing, Zhang, Jian-Xun
• Format: Journal Article
• Language: English
• Published: London Springer London 01.08.2017; Springer Nature B.V
• Subjects: Aspect ratio; Butt joints; Butt welding; CAE) and Design; Computer-Aided Engineering (CAD; Configurations; Copper; Digital cameras; Digital imaging; Engineering; Gas metal arc welding; Heat treatment; Heating; High speed; Industrial and Production Engineering; Inspection; Integrity; Laser beam welding; Mechanical Engineering; Media Management; MIG welding; Nondestructive testing; Original Article; Process parameters; Welding parameters; X ray inspection; Copper; Single pass; Butt joint configuration; Hybrid laser-arc welding
• ISSN: 0268-3768; 1433-3015
• DOI: 10.1007/s00170-017-0083-x

The present study is a work on a single-pass full penetration hybrid laser-metal inter gas (MIG) welding of 8-mm-thick pure copper (T2) in butt joint configuration without any heat treatment before the welding process. The effect of process parameters and joint configuration on the geometry and integrity of the joint was studied and then analyzed with the aid of digital camera through high-speed imaging. The optimized joint configuration and optimal welding parameters were experimentally investigated. The fusion zone showed an aspect ratio of about 1.43, the ratio of plate thickness to weld width. Nondestructive X-ray inspection revealed that the joint could satisfy the requirement of a nondestructive test of pressure equipment standard JB/T4730–2005.