Title:
METHOD FOR HEAT TREATING Co BASE ALLOY
Document Type and Number:
Japanese Patent JP3263378
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for heat treating a Co base alloy capable of suppressing deterioration in the intergranular corrosion resistance of a Co base alloy even in the case arc welding such as PTA welding and TIG welding is used.
SOLUTION: This method includes a process in which a Co base alloy having chemical components of, by weight, 0.9 to 1.4% C, ≤1.0% Mn, 0.4 to 2.0% Si, 26.0 to 32.0% Cr, 3.0 to 6.0% W, ≤1.0% Mo, ≤3.0% Ni, ≤3.0% Fe, and the balance Co with ≤0.5% other impurities is welded to a carbon steel and is heated to ≥700°C at the point of time in which the content of Fe reaches ≥5.0%.
Inventors:
Masatoshi Okano
Osamu Honda
Osamu Honda
Application Number:
JP17268599A
Publication Date:
March 04, 2002
Filing Date:
June 18, 1999
Export Citation:
Assignee:
Okano Valve Manufacturing Co., Ltd.
International Classes:
C22F1/10; B23K9/04; C22C19/07; C22F1/00; (IPC1-7): B23K9/04; C22C19/07; C22F1/10
Domestic Patent References:
| JP59169696A | ||||
| JP64104473A | ||||
| JP8134571A | ||||
| JP4162984A |
Other References:
【文献】蓮井、森垣 ”現代溶接技術体系<第15巻>肉盛溶接・容射”産報出版株式会社 昭和55年 1月23日
Attorney, Agent or Firm:
Soga Michiteru (8 people outside)
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