期刊
JOURNAL OF LASER APPLICATIONS
卷 30, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.2351/1.5010072
关键词
laser welding; narrow gap; energy allocation; orthogonal experiments; weld formation
资金
- Ministry of Industry and Information Technology of China under the project of LNG shipbuilding
- National Natural Science Foundation of China [51475297]
The allocation of laser power was a complicated process for narrow gap laser welding with filler wire. The narrow gap laser welding of a 16 mm thick 9% Ni steel plate was performed with nickel based alloy as filler wire. The effects of laser power, defocusing amount, and the distance between laser and filler wire were investigated through orthogonal experiments. The allocation paths of laser energy on molten pool, keyhole, metallic vapor, and filler wire were presented. The influencing mechanism and optimization strategies of sidewall fusion ratio, coarse grain region width, and weld bead surface evenness were investigated. (C) 2018 Laser Institute of America.
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