ROTARY TOOL FOR BOTH SURFACE FRICTION STIRRING JOINING AND BOTH SURFACE FRICTION STIRRING JOINING METHOD

Japanese Patent JP2021053700

A

To provide a rotary tool for both surface friction stirring joining that is used in both surface friction stirring joining which joins two steel plates with different plate thicknesses to each other, while rotating a pair of opposing rotary tools in opposite directions to each other, and a both surface friction stirring joining method.SOLUTION: The rotary tool for both surface friction stirring joining is used in both surface friction stirring joining which joins steel plates to each other by rotating a pair of rotary tools arranged at one surface side and at the other surface side of a not-joined part having the two steel plates with different plate thicknesses butted to each other in opposite directions from each other. The rotary tool has a tip part at a center of the rotary tool and an outer periphery part outside the tip part, where the outer periphery part is taper-shaped, and the tip part and the outer periphery part are made of materials harder than the steel plate.SELECTED DRAWING: Figure 1

WO/1998/013574	WELDED DRILL PIPES IN WHICH THE INTERNAL FLASH IS REMOVED AND RELATIVE PROCEDURE OF MANUFACTURING
JP4869817	Friction stir welding equipment
JP5338936	Joining method

IWATA SHOHEI
MATSUSHITA MUNEO
KITANI YASUSHI

JP2020158110A

April 08, 2021

September 23, 2020

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JFE STEEL CORP

B23K20/12

JP2007301579A	2007-11-22
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WO2011024320A1	2011-03-03
WO2015053258A1	2015-04-16

Isomura Tetsuro
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori

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