GB1425526A - Method of plasma arc welding - Google Patents

Method of plasma arc welding

Info

Publication number
GB1425526A
GB1425526A GB1351973A GB1351973A GB1425526A GB 1425526 A GB1425526 A GB 1425526A GB 1351973 A GB1351973 A GB 1351973A GB 1351973 A GB1351973 A GB 1351973A GB 1425526 A GB1425526 A GB 1425526A
Authority
GB
United Kingdom
Prior art keywords
pulses
nozzle
reverse
straight
polarity
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.)
Expired
Application number
GB1351973A
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.)
V N I PK I T I ELEKTROSVAROCHN
Original Assignee
V N I PK I T I ELEKTROSVAROCHN
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 V N I PK I T I ELEKTROSVAROCHN filed Critical V N I PK I T I ELEKTROSVAROCHN
Priority to GB1351973A priority Critical patent/GB1425526A/en
Publication of GB1425526A publication Critical patent/GB1425526A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/44—Plasma torches using an arc using more than one torch
    • 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
    • B23K10/00—Welding or cutting by means of a plasma
    • B23K10/02—Plasma welding
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/36—Circuit arrangements

Landscapes

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

Abstract

1425526 Welding by fusion VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY PROEKTNO-KONSTRUKTORSKY I TEKHNOLOGICHESKY INSTITUT ELEKTROSVAROCHNOGO OBORUDOVANIYA 21 March 1973 13519/73 Heading B3R [Also in Division H5] In plasma-arc welding together metal sheets, e.g. of stainless steel, or aluminium, magnesium or alloys thereof, covered with oxide film, current pulses are alternately applied to a cleaning electrode 2, in a nozzle 9, and a welding electrode 1, in a nozzle 10, the pulses to the electrodes 2, 1 being respectively of reverse and straight polarity and the electrodes and nozzles being so sized that the straight, welding, current density is at least 30% greater than that of the reverse, cleaning, current density. Preferably, the reverse polarity nozzle 9 is fed with argon and the straight polarity nozzle 10 is fed with an argon-helium mixture. For thin sheets with an oxide film thickness of 100- 300 Á, the duration and/or current amplitude of the reverse polarity pulses may be at least 30% greater than these of the straight polarity pulses; and for thick sheets with an oxide film thickness up to 100 Á. the duration and/or current amplitude of the straight polarity pulses may be at least 30% greater than these of the reverse polarity pulses.
GB1351973A 1973-03-21 1973-03-21 Method of plasma arc welding Expired GB1425526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1351973A GB1425526A (en) 1973-03-21 1973-03-21 Method of plasma arc welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1351973A GB1425526A (en) 1973-03-21 1973-03-21 Method of plasma arc welding

Publications (1)

Publication Number Publication Date
GB1425526A true GB1425526A (en) 1976-02-18

Family

ID=10024453

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1351973A Expired GB1425526A (en) 1973-03-21 1973-03-21 Method of plasma arc welding

Country Status (1)

Country Link
GB (1) GB1425526A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4119828A (en) * 1977-02-08 1978-10-10 Vsesojuzny Nauchno-Issledovatelsky Proektno-Konstruktorsky I Tekhnologichesky Institut Elektrosvarochnogo Oborudovania Method of plasma multiarc welding by permanently burning direct-current arcs
US4136273A (en) * 1977-03-04 1979-01-23 Nippon Steel Corporation Method and apparatus for tig welding
EP0241110A2 (en) * 1986-02-10 1987-10-14 Electro-Plasma, Inc. Oxide reduction in a plasma coating environment
JP2013094849A (en) * 2011-11-07 2013-05-20 Nippon Steel & Sumikin Welding Co Ltd Welding method by two-electrode plasma torch

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4119828A (en) * 1977-02-08 1978-10-10 Vsesojuzny Nauchno-Issledovatelsky Proektno-Konstruktorsky I Tekhnologichesky Institut Elektrosvarochnogo Oborudovania Method of plasma multiarc welding by permanently burning direct-current arcs
US4136273A (en) * 1977-03-04 1979-01-23 Nippon Steel Corporation Method and apparatus for tig welding
EP0241110A2 (en) * 1986-02-10 1987-10-14 Electro-Plasma, Inc. Oxide reduction in a plasma coating environment
EP0241110A3 (en) * 1986-02-10 1989-04-12 Electro-Plasma, Inc. Oxide reduction in a plasma coating environment
JP2013094849A (en) * 2011-11-07 2013-05-20 Nippon Steel & Sumikin Welding Co Ltd Welding method by two-electrode plasma torch

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Legal Events

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