期刊
JOURNAL OF LASER APPLICATIONS
卷 26, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.2351/1.4830175
关键词
laser welding; defects; surface tension; elongated keyhole; full penetration
During laser keyhole welding of thin plates, the melt pool is relatively wide compared to the plate thickness. Under certain conditions, an elongated keyhole can be created and a permanent hole is sometimes left in the weld seam. The generation of such holes is determined by surface tension effects in the melt which can generate a self-sustaining geometry at the rear of the melt pool. The geometry of the shape is known as a catenoid and has clear geometrical limits. (C) 2014 Laser Institute of America.
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