Title:
METHOD FOR MANUFACTURING CYLINDRICAL MEMBER
Document Type and Number:
WIPO Patent Application WO/2018/025497
Kind Code:
A1
Abstract:
The method is characterized by including: a butting step for rolling a flat metal plate (1) into a cylindrical member to be welded (1A) and butting end faces thereof against each other, thereby forming a butt portion (J1); an auxiliary member arranging step for arranging a curved portion (K1), which is formed at a backing jig (K), on the inner circumferential surface side of the butt portion (J1) and also arranging an auxiliary member (10) on the outer circumferential surface side of the butt portion (J1); and a friction stir step for inserting a rotating stirring pin (F2) from the surface (10a) side of the auxiliary member (10) and relatively moving a rotary tool for welding (F) along the butt portion (J1), thereby friction stir welding the butt portion (J1), with only the stirring pin (F2) being in contact with the cylindrical member to be welded (1A) and the auxiliary member (10).
Inventors:
HORI HISASHI (JP)
SEO NOBUSHIRO (JP)
SEO NOBUSHIRO (JP)
Application Number:
PCT/JP2017/021300
Publication Date:
February 08, 2018
Filing Date:
June 08, 2017
Export Citation:
Assignee:
NIPPON LIGHT METAL CO (JP)
International Classes:
B23K20/12
Foreign References:
| JP2013252537A | 2013-12-19 | |||
| JPH11267858A | 1999-10-05 | |||
| JP2005028448A | 2005-02-03 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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