JPS5645269A - Welding method for repairing low alloy steel - Google Patents

Welding method for repairing low alloy steel

Info

Publication number
JPS5645269A
JPS5645269A JP11797079A JP11797079A JPS5645269A JP S5645269 A JPS5645269 A JP S5645269A JP 11797079 A JP11797079 A JP 11797079A JP 11797079 A JP11797079 A JP 11797079A JP S5645269 A JPS5645269 A JP S5645269A
Authority
JP
Japan
Prior art keywords
welding
welded
welding electrode
low alloy
base metals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11797079A
Other languages
Japanese (ja)
Inventor
Katsuyuki Imai
Seishin Kirihara
Shizuo Matsushita
Yoshiteru Chiba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11797079A priority Critical patent/JPS5645269A/en
Publication of JPS5645269A publication Critical patent/JPS5645269A/en
Pending legal-status Critical Current

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  • Arc Welding In General (AREA)

Abstract

PURPOSE: To lower residual stress by using a low alloy welding electrode of hardness lower than that of base metals as padding metal for the surface layer in contact with corrosive environments.
CONSTITUTION: In the case of locally shaping off the defect part of a structure of low alloy steels, particularly Mn-Mo or Mn-Ni-Mo steels and repair-welding the same, 1W2 layers of the surface side in contact with corrosive environments are left and said part is welded with a welding electrode of the same component system as that of the base metals. Thence, the outside circumferential part around the repairing part is beforehand welded with a high-nickel-welding electrode, after which it is successively build-up welded toward the central part side by a nickel welding electrode or a stainless steel welding electrode. In this welding process, the hardened layer near the welding heat affected zone bond of the base metals is made into fine tempered martensite structure; in addition, plastic working is applied to the build-up welded metal near the welding boundary after the end of the welding, whereby residual stress is lowered.
COPYRIGHT: (C)1981,JPO&Japio
JP11797079A 1979-09-17 1979-09-17 Welding method for repairing low alloy steel Pending JPS5645269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11797079A JPS5645269A (en) 1979-09-17 1979-09-17 Welding method for repairing low alloy steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11797079A JPS5645269A (en) 1979-09-17 1979-09-17 Welding method for repairing low alloy steel

Publications (1)

Publication Number Publication Date
JPS5645269A true JPS5645269A (en) 1981-04-24

Family

ID=14724774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11797079A Pending JPS5645269A (en) 1979-09-17 1979-09-17 Welding method for repairing low alloy steel

Country Status (1)

Country Link
JP (1) JPS5645269A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6188994A (en) * 1984-10-05 1986-05-07 Mitsubishi Heavy Ind Ltd Weld repairing method
USRE37562E1 (en) 1988-05-05 2002-02-26 Siemens Westinghouse Power Corporation Turbine system having more failure resistant rotors and repair welding of low alloy ferrous turbine components by controlled weld build-up

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6188994A (en) * 1984-10-05 1986-05-07 Mitsubishi Heavy Ind Ltd Weld repairing method
USRE37562E1 (en) 1988-05-05 2002-02-26 Siemens Westinghouse Power Corporation Turbine system having more failure resistant rotors and repair welding of low alloy ferrous turbine components by controlled weld build-up

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