公开(公告)号：US20240300052A1

公开(公告)日：2024-09-12

申请号：US18668288

申请日：2024-05-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： MASATO TAYAMOTO ,  YOSHIRO KITAMURA ,  MASAHIRO MORI

IPC: B23K26/323 ,  B23K26/06 ,  B23K26/064 ,  B23K26/067 ,  B23K103/10 ,  B23K103/12 ,  B23K103/20 ,  B23K103/22

CPC classification number: B23K26/323 ,  B23K26/0608 ,  B23K26/0619 ,  B23K26/064 ,  B23K26/0676 ,  B23K2103/10 ,  B23K2103/12 ,  B23K2103/20 ,  B23K2103/22

Abstract: A laser machining method is a laser machining method for joining a first member containing a first metal and a second member containing a second metal different from the first metal, the method including a first step of forming a joint in which the first metal and the second metal are melted by performing scanning with a first laser beam, and a second step of stirring a metal structure near the joint by performing scanning, on a rear side in a scanning direction of the first laser beam, with a second laser beam having a beam diameter larger than a bean diameter of the first laser beam and having a lower power density than a power density of the first laser beam.