Welding 1

[SLPC10-03] Elucidation of Spatter Generation Mechanism in Medium Vacuum Laser Welding

*Kai Tomita¹, Koichi Taniguchi¹, Keiji Ueda¹, Yuji Sato², Masahiro Tsukamoto² (1. JFE Steel Corporation, 2. JWRI, Osaka Univ.)

Laser welding under an atmospheric pressure of 1200 Pa or more clarified that the molten pool repeatedly expanded and shrunk due to unstable heat input, leading to the generation of spatter.