WORKPIECE PRODUCTS AND WORKPIECE PRODUCT MANUFACTURING METHOD USING FRICTION STIR WELDING, AND REMAINING WORKPIECE AFTER WORKPIECE PRODUCTS ARE CUT OUT FROM WORKPIECE

WIPO Patent Application WO/2018/150509

A1

[Problem] To enable improvement in material yield and improvement in shortening processing time by applying friction stirring to a large-size workpiece, and to solve problems associated with application of fiction stirring to the large-size workpiece. [Solution] A friction-stir-welded workpiece is manufactured by applying friction stir welding along butt joint surfaces throughout a length, of a length L, that is obtained by adding a length of at least twice a thickness l of one member to a total width Lo of a plurality of workpiece products, and the plurality of workpiece products are cut out from the friction-stir-welded workpiece in a direction perpendicular to the friction stir welding surface. The plurality of workpiece products having the same width are cut out from the friction-stir-welded workpiece while leaving cutting margins, each having a length greater than the thickness l of the one member, on both sides of each of the workpiece products prior to being cut out.

WO/2016/186134	FRICTION STIR WELDING DEVICE AND FRICTION STIR WELDING METHOD
WO/2015/182497	HEAT-RESISTANT TUNGSTEN ALLOY, FRICTION STIR WELDING TOOL, AND METHOD FOR MANUFACTURING SAME

JOO YOUNG-HWAN (KR)
ASAKURA RIKA (JP)
ODA HISATAKA (JP)
TOMIYAMA YASUHIRO (JP)

PCT/JP2017/005685

August 23, 2018

February 16, 2017

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V TEX CORP (JP)

B23K20/12

JP2003211326A	2003-07-29
JP4732109B2	2011-07-27
JP4352814B2	2009-10-28
JP2011218363A	2011-11-04

NIPPO INTERNATIONAL PATENT CORPORATION (JP)

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