JPS57121881A - Tig welding method - Google Patents

Tig welding method

Info

Publication number
JPS57121881A
JPS57121881A JP504481A JP504481A JPS57121881A JP S57121881 A JPS57121881 A JP S57121881A JP 504481 A JP504481 A JP 504481A JP 504481 A JP504481 A JP 504481A JP S57121881 A JPS57121881 A JP S57121881A
Authority
JP
Japan
Prior art keywords
electrodes
preheating
pieces
distance
blowholes
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
JP504481A
Other languages
Japanese (ja)
Inventor
Kosaku Senda
Hiromizu Mashida
Satoshi Ogura
Masayasu Nihei
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 JP504481A priority Critical patent/JPS57121881A/en
Publication of JPS57121881A publication Critical patent/JPS57121881A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/235—Preliminary treatment

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

PURPOSE:To perform preheating and melting of a weld zone continuously and to form a deposited part of high quality free from blowholes in a TIG welding method using two pieces of non-consumable electrodes by setting the distance between two pieces of electrodes adequately. CONSTITUTION:To weld a base metals 19 to be welded with a torch nozzle 20 provided with two pieces of non-consumable electrodes 13A, 13B made of tungsten, the distance between both electrodes 13A and 13B is set at 5-15mm.. The weld zone of the base metal 19 is preheated with the arc 18A of the preceding side electrode 13A, following to which the preheating part is melted with the arc 18B of the succeeding side electrode 13B, whereby a deposited part 21 is formed. Since the distance between both electrodes is adequate, the inflow of the combustion gas produced during preheating into the shielding gas around the electrode 13B and consequent formation of blowholes in the part 21 are obviated, and the part 21 of superior quality without degradation in preheating effect is obtained.
JP504481A 1981-01-19 1981-01-19 Tig welding method Pending JPS57121881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP504481A JPS57121881A (en) 1981-01-19 1981-01-19 Tig welding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP504481A JPS57121881A (en) 1981-01-19 1981-01-19 Tig welding method

Publications (1)

Publication Number Publication Date
JPS57121881A true JPS57121881A (en) 1982-07-29

Family

ID=11600420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP504481A Pending JPS57121881A (en) 1981-01-19 1981-01-19 Tig welding method

Country Status (1)

Country Link
JP (1) JPS57121881A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5355431A (en) * 1976-10-29 1978-05-19 Nippon Steel Corp Welding process

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5355431A (en) * 1976-10-29 1978-05-19 Nippon Steel Corp Welding process

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