Title:
ROTARY TOOL AND JOINING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/008785
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a rotary tool (1) and a joining method which are capable of reducing the size of a recess groove in the surface of a metal member (20) and decreasing the surface roughness of a joint surface. This rotary tool (1) for friction stirring provided with a base end-side pin (3) and a tip-side pin (4) is characterized in that: the taper angle of the base end-side pin (3) is greater than the taper angle of the tip-side pin (4); and a stair-like stepped part (10) is formed on the outer peripheral surface of the base end-side pin (3). The friction stirring is performed while pressing the surfaces of the metal members (20, 20) by means of the base end-side pin (3).
Inventors:
HORI HISASHI (JP)
YAMANAKA KOSUKE (JP)
YAMANAKA KOSUKE (JP)
Application Number:
PCT/JP2017/032146
Publication Date:
January 10, 2019
Filing Date:
September 06, 2017
Export Citation:
Assignee:
NIPPON LIGHT METAL CO (JP)
International Classes:
B23K20/12
Foreign References:
| JP2016215264A | 2016-12-22 | |||
| JP2013509301A | 2013-03-14 | |||
| JP2012125822A | 2012-07-05 | |||
| JP2007160370A | 2007-06-28 | |||
| JP2006212651A | 2006-08-17 | |||
| JP2003136256A | 2003-05-14 | |||
| JPH0747480A | 1995-02-21 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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