Title:
WELDING METHOD
Document Type and Number:
Japanese Patent JP2020062688
Kind Code:
A
Abstract:
To improve a strength characteristic after welded.SOLUTION: A welding method for welding a cast iron 11 (a first member) and a steel 12 (a second member) having hardness lower than that of the cast iron 11 is provided that comprises: a first step of inserting an insert material 13 (a third member) having hardness lower than that of the steel 12 between the cast iron 11 and the steel 12; a second step of welding the boundary portion between the cast iron 11 and the insert material 13; and a third step of welding the boundary portion between the steel 12 and the insert material 13, so that strength characteristics after welded can be improved.SELECTED DRAWING: Figure 1
Inventors:
FUJITANI YASUYUKI
WATANABE MASANARI
WATANABE MASANARI
Application Number:
JP2019236356A
Publication Date:
April 23, 2020
Filing Date:
December 26, 2019
Export Citation:
Assignee:
MITSUBISHI HEAVY IND MACHINE TOOL CO LTD
International Classes:
B23K26/21; B23K15/00; B23K26/211; B23K26/323
Domestic Patent References:
JPH07286528A | 1995-10-31 | |||
JPS536244A | 1978-01-20 | |||
JPS63171265A | 1988-07-15 | |||
JP2009068380A | 2009-04-02 | |||
JPS5511491A | 1980-01-26 | |||
JP2000117470A | 2000-04-25 |
Attorney, Agent or Firm:
Noriharu Fujita
Miori Takao
Kawakami Miki
Daisuke Nagata
Miori Takao
Kawakami Miki
Daisuke Nagata