JPS57181792A - Precooling method for weld zone - Google Patents

Precooling method for weld zone

Info

Publication number
JPS57181792A
JPS57181792A JP6479281A JP6479281A JPS57181792A JP S57181792 A JPS57181792 A JP S57181792A JP 6479281 A JP6479281 A JP 6479281A JP 6479281 A JP6479281 A JP 6479281A JP S57181792 A JPS57181792 A JP S57181792A
Authority
JP
Japan
Prior art keywords
torch
refrigerant
prevent
base materials
cracking
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
JP6479281A
Other languages
Japanese (ja)
Inventor
Masanori Watanabe
Yasushi Morii
Hiroshi Koizumi
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.)
Japan Oxygen Co Ltd
Nippon Sanso Corp
Original Assignee
Japan Oxygen Co Ltd
Nippon Sanso Corp
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 Japan Oxygen Co Ltd, Nippon Sanso Corp filed Critical Japan Oxygen Co Ltd
Priority to JP6479281A priority Critical patent/JPS57181792A/en
Publication of JPS57181792A publication Critical patent/JPS57181792A/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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/003—Cooling means

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

PURPOSE:To prevent the cracking, embritling, etc. that may be produced during the cooling process of weld zones and heat-affected zones by ejecting a refrigerant in front of a welding torch thereby precooling the groove and base materials locally. CONSTITUTION:Base materials 8 are welded by a welding torch 1, whereby weld beads 9 are formed. At this time, a refrigerant such as low temp. liquefied gas is ejected through a refrigerant ejection pipe 2 disposed in the part proximity to the torch 1 just before the torch onto a groove part and the base materials 8, whereby these parts are precooled. A shielding plate 7 is provided between the torch 1 and the pipe 2 to prevent or ease the influence of the ejection of the refrigerant upon a shielding gas for welding. It is possible to prevent the high temp. cracking, shrinkage cracking, etc. that may be produced during the cooling process of the weld zones effectively by this method.
JP6479281A 1981-04-28 1981-04-28 Precooling method for weld zone Pending JPS57181792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6479281A JPS57181792A (en) 1981-04-28 1981-04-28 Precooling method for weld zone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6479281A JPS57181792A (en) 1981-04-28 1981-04-28 Precooling method for weld zone

Publications (1)

Publication Number Publication Date
JPS57181792A true JPS57181792A (en) 1982-11-09

Family

ID=13268433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6479281A Pending JPS57181792A (en) 1981-04-28 1981-04-28 Precooling method for weld zone

Country Status (1)

Country Link
JP (1) JPS57181792A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796798A (en) * 1986-06-11 1989-01-10 Kawasaki Jukogyo Kabushiki Kaisha Method of and apparatus for continuous production of seam-welded metal tubing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS527345A (en) * 1975-07-08 1977-01-20 Hitachi Ltd Welding equipment
JPS5346449A (en) * 1976-10-12 1978-04-26 Ishikawajima Harima Heavy Ind Low temperature welding

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS527345A (en) * 1975-07-08 1977-01-20 Hitachi Ltd Welding equipment
JPS5346449A (en) * 1976-10-12 1978-04-26 Ishikawajima Harima Heavy Ind Low temperature welding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796798A (en) * 1986-06-11 1989-01-10 Kawasaki Jukogyo Kabushiki Kaisha Method of and apparatus for continuous production of seam-welded metal tubing

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