Title:
JOINING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/150590
Kind Code:
A1
Abstract:
Provided is a joining method which is capable of reducing the size of a recess groove in a surface of a metal member and also reducing the roughness of a joined surface. The present invention is provided with: an abutting step for abutting, to each other, metal members (1), (1) that have varying surface heights, and forming an abutment part (J) having a varying height; and a joining step for inserting a rotary tool F, which is for friction stirring and provided with a base end-side pin (F2) and a tip-side pin (F3), into the abutment part (J) having a varying height to perform friction stirring on the abutment part (J). The taper angle (A) of the base end-side pin (F2) is larger than the taper angle (B) of the tip-side pin (F3). A stair-like stepped part (F21) is formed on the outer circumferential surface of the base end-side pin (F2). In the joining step, the abutment part (J) is friction-stirred in a state in which the base end-side pin (F2) and the tip-side pin (F3) are brought into contact with the metal members (1), (1).
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Inventors:
HORI HISASHI (JP)
YAMANAKA KOSUKE (JP)
YAMANAKA KOSUKE (JP)
Application Number:
PCT/JP2018/010234
Publication Date:
August 08, 2019
Filing Date:
March 15, 2018
Export Citation:
Assignee:
NIPPON LIGHT METAL CO (JP)
International Classes:
B23K20/12
Foreign References:
| JP2016215264A | 2016-12-22 | |||
| JP2008030050A | 2008-02-14 | |||
| JP2015199119A | 2015-11-12 | |||
| JP2007160370A | 2007-06-28 | |||
| JP2006212651A | 2006-08-17 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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