公开(公告)号：US20230001510A1

公开(公告)日：2023-01-05

申请号：US17851355

申请日：2022-06-28

Applicant: FUTABA INDUSTRIAL CO., LTD.

Inventor： Shota Muto ,  Shinya Azuchi ,  Koji Yamaguchi

IPC: B23K26/26

Abstract: In a manufacturing method of a tailored blank including a first steel plate and a second steel plate to be joined by butt welding, the first and second steel plates are butt welded with a laser beam. The laser beam has a power density q1 in a first region, a power density q2 in a second region, a power density q3 in a third region, and a power density q4 in a fourth region. The power density q1, the power density q2, the power density q3, and the power density q4 satisfy a relationship of q1>q2>q3>q4.