Title:
高強度耐熱鋼の溶接継手部及びその溶接方法
Document Type and Number:
Japanese Patent JP4633959
Kind Code:
B2
Abstract:
This invention provides a welding method and a welded joint for high strength, temperature resistant steels that produces the same strength as the base metal in the welded joint, thereby resolving the strength problems in the heat affected area by making a simple change to the welding method, and additionally, to extend this advantage to high strength ferrite heat resistant steels by providing a multi-pass buildup welding method for such high strength ferrite heat resistant steels. The multi-layered cap 15a fusion area extends past the heat affected area 13 that lies outside groove 11, and the surface area of the foregoing extension that is required to impart the same level of creep strength as is inherent in the base metal is based on the relationship between the groove width and the base metal thickness shown as hatched area in Figure 1(B).
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Inventors:
Nobuyoshi Komai
Fujimitsu Masuyama
Yasuhiro Takaguchi
Fumio Nishi
Fujimitsu Masuyama
Yasuhiro Takaguchi
Fumio Nishi
Application Number:
JP2001137154A
Publication Date:
February 16, 2011
Filing Date:
May 08, 2001
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
B23K9/095; B23K9/23; B23K9/00; B23K9/02; B23K9/04; B23K31/00; B23K33/00
Domestic Patent References:
| JP53073441A | ||||
| JP59159294A | ||||
| JP7060476A | ||||
| JP7009147A | ||||
| JP56023227A |
Attorney, Agent or Firm:
Patent business corporation Takahashi Matsumoto & Partners