GB2002276A - Welding at pressures greater than atmospheric pressures - Google Patents

Welding at pressures greater than atmospheric pressures

Info

Publication number
GB2002276A
GB2002276A GB7828790A GB7828790A GB2002276A GB 2002276 A GB2002276 A GB 2002276A GB 7828790 A GB7828790 A GB 7828790A GB 7828790 A GB7828790 A GB 7828790A GB 2002276 A GB2002276 A GB 2002276A
Authority
GB
United Kingdom
Prior art keywords
welding
pressures
electrode
mig
atmospheric
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.)
Granted
Application number
GB7828790A
Other versions
GB2002276B (en
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.)
Welding Institute England
Original Assignee
Welding Institute England
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 Welding Institute England filed Critical Welding Institute England
Priority to GB7828790A priority Critical patent/GB2002276B/en
Priority to DE19782836983 priority patent/DE2836983A1/en
Publication of GB2002276A publication Critical patent/GB2002276A/en
Application granted granted Critical
Publication of GB2002276B publication Critical patent/GB2002276B/en
Expired 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
    • B23K9/0061—Underwater arc welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

Metal inert gas (MIG) welding at pressures greater than 7 bars such as welding of pipelines on the seabed, is carried out with the electrode negative with respect to the workpiece and with an electrode wire of diameter not greater than 1.4 mm; the slope of the power supply, as seen from the welding arc, is preferably between 6 and 15V/100A, which is higher than the usual 3 to 4V/100A used in positive-electrode MIG welding at normal atmospheric pressure. The specification discloses orbital pipe welding apparatus with head oscillation. <IMAGE>
GB7828790A 1977-04-05 1978-07-04 Welding at pressures greater than atmospheric pressure Expired GB2002276B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB7828790A GB2002276B (en) 1977-04-05 1978-07-04 Welding at pressures greater than atmospheric pressure
DE19782836983 DE2836983A1 (en) 1977-04-05 1978-08-24 METHOD AND DEVICE FOR WELDING UNDER PRESSURE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1438977 1977-04-05
GB7828790A GB2002276B (en) 1977-04-05 1978-07-04 Welding at pressures greater than atmospheric pressure

Publications (2)

Publication Number Publication Date
GB2002276A true GB2002276A (en) 1979-02-21
GB2002276B GB2002276B (en) 1982-01-06

Family

ID=26250528

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7828790A Expired GB2002276B (en) 1977-04-05 1978-07-04 Welding at pressures greater than atmospheric pressure

Country Status (2)

Country Link
DE (1) DE2836983A1 (en)
GB (1) GB2002276B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3951511A1 (en) 2020-08-05 2022-02-09 Envisics Ltd. Holographic fingerprint

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ182982A (en) * 1976-01-12 1979-10-25 Boc Ltd Arc welding under water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3951511A1 (en) 2020-08-05 2022-02-09 Envisics Ltd. Holographic fingerprint

Also Published As

Publication number Publication date
GB2002276B (en) 1982-01-06
DE2836983C2 (en) 1988-06-16
DE2836983A1 (en) 1980-03-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee