FRICTION PRESSURE WELDING METHOD

WIPO Patent Application WO/2022/064980

A1

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.

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WO/2017/017254	METHOD FOR FRICTION STIR WELDING AND FRICTION-STIR-WELDED WORKPIECE
JP2007185690	VEHICLE BODY MEMBER HEMMING METHOD, AND VEHICLE BODY MEMBER HEMMING STRUCTURE

FUJII HIDETOSHI (JP)
LIU HUIHONG (JP)
MORISADA YOSHIAKI (JP)

PCT/JP2021/032079

March 31, 2022

September 01, 2021

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UNIV OSAKA (JP)

B23K20/12

WO2018168687A1	2018-09-20
WO2019181360A1	2019-09-26
WO2017022184A1	2017-02-09

IPR CONSULTANT PPC (JP)

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