JPS561276A - Plural electrode welding method - Google Patents

Plural electrode welding method

Info

Publication number
JPS561276A
JPS561276A JP7471879A JP7471879A JPS561276A JP S561276 A JPS561276 A JP S561276A JP 7471879 A JP7471879 A JP 7471879A JP 7471879 A JP7471879 A JP 7471879A JP S561276 A JPS561276 A JP S561276A
Authority
JP
Japan
Prior art keywords
electrode
weld metal
succeeding
degradation
toughness
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
JP7471879A
Other languages
Japanese (ja)
Inventor
Kazuo Nonaka
Masakazu Ikeuchi
Kyoichi Murakami
Masaaki Ueno
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.)
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP7471879A priority Critical patent/JPS561276A/en
Publication of JPS561276A publication Critical patent/JPS561276A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arc Welding In General (AREA)

Abstract

PURPOSE: To improve the freezing structure of weld metal and prevent the degradation in toughness by providing a cooling nozzle between a preceding electrode and a succeeding electrode and forcedly cooling the weld metal formed by the preceding electrode.
CONSTITUTION: In plural electrode MIG welding, the degradation of toughness caused owing to the columnar crystal structure developed continuously between the weld metal by the preceding electrode and the weld metal by the succeeding electrode is prevented. For example, a cooling nozzle 2 is provided between the preceding electrode 1 and succeeding electrode 3. While the weld metal a formed by the preceding electrode is forcedly cooled by using suitable inert gas such as Argon gas, the weld metal b is formed by the succeeding electrode in succession. Thereby, the region where the columnar crystal structure is fined is much formed and the degradation of toughness is prevented. Here, compressed air may be used in place of inert gas, depending upon conditions.
COPYRIGHT: (C)1981,JPO&Japio
JP7471879A 1979-06-15 1979-06-15 Plural electrode welding method Pending JPS561276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7471879A JPS561276A (en) 1979-06-15 1979-06-15 Plural electrode welding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7471879A JPS561276A (en) 1979-06-15 1979-06-15 Plural electrode welding method

Publications (1)

Publication Number Publication Date
JPS561276A true JPS561276A (en) 1981-01-08

Family

ID=13555272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7471879A Pending JPS561276A (en) 1979-06-15 1979-06-15 Plural electrode welding method

Country Status (1)

Country Link
JP (1) JPS561276A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS647378U (en) * 1987-07-01 1989-01-17
WO2012117808A1 (en) * 2011-02-28 2012-09-07 株式会社神戸製鋼所 Gas shielded arc welding method and welding apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS647378U (en) * 1987-07-01 1989-01-17
WO2012117808A1 (en) * 2011-02-28 2012-09-07 株式会社神戸製鋼所 Gas shielded arc welding method and welding apparatus
JP2012179614A (en) * 2011-02-28 2012-09-20 Kobe Steel Ltd Gas shield arc welding method and welding apparatus

Similar Documents

Publication Publication Date Title
KR940003652A (en) Shielding gas for arc welding
JPS5542148A (en) Inconel welding method of dissimilar material joint
JPS561276A (en) Plural electrode welding method
JPS5527418A (en) Welding or cutting method
IE44577L (en) Arc welding
JPS5471744A (en) Welding method by direct current gas shielded arc
JPS5527417A (en) Vertical downward build-up welding method
JPS558411A (en) Nitriding method for aluminum or aluminum alloy in molten state
JPS55122684A (en) Double shielded tig welding method
GB1349536A (en) Process of welding a high tensile steel
JPS5395155A (en) Starting method for arc welding
JPS5739081A (en) Gas shielded arc welding method and multiple gas shielding nozzles
JPS53130241A (en) Welding method for manufacture of thick walled steel pipe
JPS5395152A (en) Method and apparatus for narrow gap welding
JPS5420932A (en) High speed welding method
JPS5633193A (en) Preventing method for strain ageing embrittlement of weld zone of low alloy steel
JPS5317903A (en) Manufacturing method of stator iron core
JPS56148474A (en) Tig welding method
JPS52147513A (en) Smelting method of low nitrogen steel at steel making arc furnace
JPS5625963A (en) Melt nitriding method for aluminum and aluminum alloy
JPS5339288A (en) Purifying method for inert gas
JPS53118241A (en) Welding method for steel intended for use at extra low temperature
JPS5495952A (en) Repairing method for vertical plane of large cast steel structure by building up
JPS55136586A (en) Electron beam welding method
JPS5499046A (en) Method and apparatus for gas shielded welding and gas shielded welding torch