LUO Youhui, LI Yonghui, LIU Jianqiang, et al.Optimization of Multi-Wave Annular Laser Sealing Stud Welding Process[J].Electric Welding Machine, 2024, 54(5): 65-70.
LUO Youhui, LI Yonghui, LIU Jianqiang, et al.Optimization of Multi-Wave Annular Laser Sealing Stud Welding Process[J].Electric Welding Machine, 2024, 54(5): 65-70. DOI: 10.7512/j.issn.1001-2303.2024.05.09.
Optimization of Multi-Wave Annular Laser Sealing Stud Welding Process
To address the issues of cracks and pores in aluminum alloy battery sealing nails during traditional laser welding processes and to enhance production efficiency
we employed a self-developed multi-wavelength ring fiber laser to weld 2 mm thick 3003 aluminum alloy cover plates and 0.95 mm thick sealing nails. The study investigated the impact of key process parameters such as inner and outer ring welding power and defocusing amount on the weld formation at a constant welding speed. The experimental results show that at a welding speed of 40 mm/s
with an optical fiber (inner ring) power of 500 W
a semiconductor (outer ring) power of 1 700 W
and a defocusing amount of +1.5 mm
the weld penetration reached 0.6 mm
and the weld width was 1.2 mm
resulting in the optimal welding effect. At this point
the consistency of the melt depth at various positions of the weld was high
with minimal welding spatter and no explosion points
pores
or cracks. Furthermore
actual sample welding tests demonstrated the stability and reliability of the welding process.
关键词
环形光斑激光器密封钉焊接激光焊接离焦量熔深熔宽
Keywords
multi-wavelength ring lasersealing nail weldinglaser weldingdefocusing amountweld depthweld width
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