公开(公告)号：US20240189937A1

公开(公告)日：2024-06-13

申请号：US18285965

申请日：2022-04-07

Applicant: NTK CUTTING TOOLS CO., LTD. ,  Osaka University

Inventor： Yuki Takeuchi ,  Jun Moteki ,  Hiroki Takeuchi ,  Yusuke Katsu ,  Yasushi Hara ,  Hidetoshi Fujii ,  Yoshiaki Morisada

IPC: B23K20/12 ,  B23K101/18

CPC classification number: B23K20/1255 ,  B23K2101/18

Abstract: A friction stir welding tool and a friction stir welding method that can increase the amount of heat generation, while reducing the amount of escaping heat are provided. The friction stir welding tool (1) has a shoulder portion (7) and a probe portion (5) provided on a bottom surface of the shoulder portion (7) . The base material of the friction stir welding tool (1) is a ceramic material whose main phase is silicon nitride or sialon. The shoulder portion (7) has a diameter of 35 mm or greater.