LINEAR FRICTION WELDING METHOD, LINEAR FRICTION WELD JOINT, AND WELDED STRUCTURE

WIPO Patent Application WO/2023/166871

A1

The present invention provides a simple and efficient linear friction welding method capable of forming a satisfactory weld portion regardless of the materials, shapes and sizes of members to be welded, and a linear friction welded structure obtained by the linear friction welding method, and also provides a simple and efficient linear friction welding method capable of accurately controlling a welding temperature regardless of the materials, shapes and sizes of members to be welded, and a linear friction welded structure obtained by the linear friction welding method. A linear friction welding method of the present invention is characterized by comprising: a first step for abutting one member against another member to form an interface to be welded; a second step for applying a preliminary pressure substantially perpendicularly to the interface to be welded; a third step for repeatedly sliding the one member and the other member on the same trajectory in a state in which a welding pressure is being applied to the interface to be welded, and removing burrs from the interface to be welded; and a fourth step for stopping the sliding, and forming a welded surface. The preliminary pressure in the second step has a value higher than the welding pressure.

FUJII HIDETOSHI (JP)
USHIODA KOHSAKU (JP)
MORISADA YOSHIAKI (JP)

PCT/JP2023/001203

September 07, 2023

January 17, 2023

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UNIV OSAKA (JP)

B23K20/12

WO2021024687A1	2021-02-11
WO2018029812A1	2018-02-15

JP2018122343A	2018-08-09
JP2012024840A	2012-02-09
JP2015213945A	2015-12-03

IPR CONSULTANT PPC (JP)

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