Title:
WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/208727
Kind Code:
A1
Abstract:
A welding method for welding a cast iron (first member) (11) and a steel (second member) (12) having a lower hardness than the cast iron (11), which comprises: a first step for inserting an insert material (third member) (13) having a lower hardness than the steel (12) between the cast iron (11) and the steel (12); a second step for welding the boundary portion between the cast iron (11) and the insert material (13); and a third step for welding the boundary portion between the steel (12) and the insert material (13). Consequently, this welding method is able to improve the strength characteristics after welding.
Inventors:
FUJIYA YASUYUKI (JP)
WATANABE MASAO (JP)
WATANABE MASAO (JP)
Application Number:
PCT/JP2017/017329
Publication Date:
December 07, 2017
Filing Date:
May 08, 2017
Export Citation:
Assignee:
MITSUBISHI HEAVY IND MACHINE TOOL CO LTD (JP)
International Classes:
B23K26/211; B23K15/00; B23K26/21; B23K26/323; B23K31/00
Foreign References:
| JP2001087882A | 2001-04-03 | |||
| JP2015136705A | 2015-07-30 | |||
| JP5293840B2 | 2013-09-18 |
Attorney, Agent or Firm:
MITSUISHI, Toshiro et al. (JP)
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