| 摘要 |
PROBLEM TO BE SOLVED: To implement the constantly excellent welding without generating any martensitic transformation and incomplete fusion of a weld metal. SOLUTION: In a method for welding a stainless steel to a surface of a carbon steel using the YAG laser, the welding heat input Q (kJ/cm) is equal to P/Vt×60 [where, P is the laser beam output (kW), and Vt is the welding speed (cm/min)], and when the wire feed length W (cm/min) per unit welding length is equal to Vw/Vt, [where, Vw is the wire feed quantity (cm/min), and Vt is the welding speed (cm/min)], the welding is implemented with the wire feed length W per unit welding length in a range S between W≈0.22Q+0.75 and W≈0.40Q+0.50. |
