Title:
FRICTION STIR WELDING METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/070317
Kind Code:
A1
Abstract:
Provided are a friction welding method and device whereby plastic flow defects caused by insufficient heating of a material to be machined are effectively eliminated, sufficient strength is obtained, and bonding workability is improved. During friction stir welding of structural steel: a rotation tool is used that has a raw material having a dynamic friction coefficient for steel plates of no more than 0.6; the rotation tool is arranged on one surface side and the other surface side of the steel plate; and at least 65% of the area of a heating zone to be heated by the heating means provided in front of the rotation tool is positioned between a welding center line and a straight line that is parallel to the welding center line and separated towards a retreating side by a distance the same as the maximum diameter of a pin section of the rotation tool, said welding center line being a straight line on the surface of the steel plate, that passes through the rotation axis of the rotation tool and is parallel to the welding direction.
Inventors:
MATSUSHITA MUNEO (JP)
IKEDA RINSEI (JP)
TANIGUCHI KOICHI (JP)
IKEDA RINSEI (JP)
TANIGUCHI KOICHI (JP)
Application Number:
PCT/JP2017/036093
Publication Date:
April 19, 2018
Filing Date:
October 04, 2017
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B23K20/12
Domestic Patent References:
| WO2015045299A1 | 2015-04-02 |
Foreign References:
| JP2014193489A | 2014-10-09 | |||
| JP4838385B2 | 2011-12-14 |
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
Download PDF: