The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2025
Filed:
Sep. 01, 2021
Osaka University, Osaka, JP;
OSAKA UNIVERSITY, Osaka, JP;
Abstract
The objective of the present invention is to provide a friction pressure welding method with which the welding temperature can be controlled accurately, the welding temperature can be lowered, and the distribution of the welding temperature at an interface to be welded can be made uniform; and to provide a welded structure obtained by this method. The present invention relates to the friction pressure welding method in which one member is abutted against another member and is made to slide in a state in which a welding pressure substantially perpendicular to the interface to be welded is applied, said friction pressure welding method being characterized in that the maximum sliding speed is no greater than 53 mm/sec, the difference in the temperature increase rate between a center portion and an outer peripheral portion at the interface to be welded is 10° C./sec or less, and the difference between the maximum attained temperature between the center portion and the outer peripheral portion at the interface to be welded is no greater than 50° C.