公开(公告)号：US20240157467A1

公开(公告)日：2024-05-16

申请号：US18284426

申请日：2022-03-18

Applicant: OSAKA UNIVERSITY

Inventor： Hidetoshi FUJII ,  Yoshiaki MORISADA ,  Yasuhiro AOKI

IPC: B23K20/12

CPC classification number: B23K20/1205 ,  B23K2103/12

Abstract: Provided are an easy and efficient linear friction-joining method with which it is possible to form an excellent joined section between materials being joined that are of different sizes and shapes, and a linear friction-joining structure obtained through the aforementioned friction-joining method. The present invention discloses a linear friction-joining method characterized by having a first step for bringing an end surface of one member into contact with an end surface of another member to form a joining interface, a second step for repeatedly causing the one member and the other member to slide on the same trajectory in a state in which pressure is applied roughly perpendicularly to the joining interface and eliminating burrs from the joining interface, and a third step for stopping the sliding and forming a joined surface, the linear friction-joining method also being characterized in that the end surface of the one member and the end surface of the other member have different surface areas, and in that the protrusion length of the member having the lesser surface area is set equal to or greater than the upset distance.

公开(公告)号：US20210107087A1

公开(公告)日：2021-04-15

申请号：US16981001

申请日：2019-02-22

Applicant: OSAKA UNIVERSITY

Inventor： Hidetoshi FUJII ,  Yoshiaki MORISADA ,  Huihong LIU ,  Yasuhiro AOKI ,  Masayoshi KAMAI

IPC: B23K20/02

Abstract: To provide a solid phase welding method and a solid phase welding apparatus which are possible to accurately control the welding temperature, to lower the welding temperature and to achieve a solid phase welding of the metallic materials. The present invention provides a solid phase welding method for metallic materials comprising, a first step of forming an interface to be welded by abutting end portions of one material to be welded and the other material to be welded and applying a pressure in a direction substantially perpendicular to the interface to be welded, a second step of raising a temperature of the vicinity of the interface to be welded to a welding temperature by an external heating means, wherein the pressure is set to equal to or more than the yield strength of the one material to be welded and/or the other material to be welded at the welding temperature.