GB992683A - An electric arc-heated plasma torch - Google Patents

An electric arc-heated plasma torch

Info

Publication number
GB992683A
GB992683A GB49104/62A GB4910462A GB992683A GB 992683 A GB992683 A GB 992683A GB 49104/62 A GB49104/62 A GB 49104/62A GB 4910462 A GB4910462 A GB 4910462A GB 992683 A GB992683 A GB 992683A
Authority
GB
United Kingdom
Prior art keywords
electrodes
nozzle
tungsten
thoria
torch
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
GB49104/62A
Inventor
Edward Leslie Burrill
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.)
BOC Group Ltd
Original Assignee
British Oxigen 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 British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB49104/62A priority Critical patent/GB992683A/en
Publication of GB992683A publication Critical patent/GB992683A/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
    • H05H1/34—Details, e.g. electrodes, nozzles

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Plasma Technology (AREA)

Abstract

992,683. Removing metal by fusion. BRITISH OXYGEN CO. Ltd. Dec. 30, 1963 [Dec. 31, 1962], No. 49104/62. Heading B3V. [Also in Division H5] A plasma arc torch for surface conditioning, e.g. stainless steel comprises a plurality of electrodes in a nozzle having an elongated outlet (i.e. length to breadth of outlet at least 4 :1). As shown, the torch comprises a watercooled nozzle 2 and a watercooled upper housing formed of three similar parts 6, 7, 8, each supporting an electrode 1, and insulated from one ananother by blocks 9, and electrically and thermally insulated from the nozzle by blocks 4, 5. Electric power is fed through water - cooled cables to unions on the water conduits supplying the housings 6 ... 8 and the nozzle. The arc may be started by H.F. discharge and maintained by D.C. and may be struck between the electrodes and nozzle or between the electrodes and work. The gas supply is arranged to swirl round the electrodes, and may be argon/nitrogen. Electrodes-for inert gases: preferably tungsten with 2% thoria; plain thoria, tungsten tube with thoria core; copper rod with tungsten or thoriated tungsten tip: for oxidizing gases:- water-cooled copper electrodes with zirconia or lanthaneum hexaboride insert. For desurfacing the torch is inclined at 20- 60 degrees to the work; for removing casting fins the angle may be near 0 degrees. Speed of movement may be 20-200 ft./hour.
GB49104/62A 1962-12-31 1962-12-31 An electric arc-heated plasma torch Expired GB992683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB49104/62A GB992683A (en) 1962-12-31 1962-12-31 An electric arc-heated plasma torch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49104/62A GB992683A (en) 1962-12-31 1962-12-31 An electric arc-heated plasma torch

Publications (1)

Publication Number Publication Date
GB992683A true GB992683A (en) 1965-05-19

Family

ID=10451156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49104/62A Expired GB992683A (en) 1962-12-31 1962-12-31 An electric arc-heated plasma torch

Country Status (1)

Country Link
GB (1) GB992683A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145310A (en) * 1981-03-19 1985-03-20 Loughborough Consult Ltd Generating a plurality of electric discharges, plasma torches

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145310A (en) * 1981-03-19 1985-03-20 Loughborough Consult Ltd Generating a plurality of electric discharges, plasma torches

Similar Documents

Publication Publication Date Title
US4055741A (en) Plasma arc torch
US3575568A (en) Arc torch
US3194941A (en) High voltage arc plasma generator
US4439662A (en) Method of operating a plasma generating apparatus
JPH0763033B2 (en) High power plasma jet generator
GB892448A (en) Arc torch
GB1456539A (en) Arc welding
KR910015359A (en) Gas metal arc welding method and shielding gas used for welding thereof
GB1341183A (en) Consumable electrode wire contact tube for an arc welding torch
GB1101036A (en) Electric arc welding
GB1477655A (en) Electrical arc-welding torches
GB866106A (en) Improved arc working process and apparatus
US3344256A (en) Method for producing arcs
GB992683A (en) An electric arc-heated plasma torch
GB1008687A (en) Improvements in and relating to arc working
US1911033A (en) Atomic gas torch
US3504219A (en) Non-consumable electrode for plasma jet torches
GB1520000A (en) Plasma arc torches
GB1061643A (en) Melting of metals in a furnace by means of a stabilized alternating current arc
SE7413542L (en)
GB995152A (en) Improvements in electric arc cutting apparatus
GB1533963A (en) Plasma-mig welding torch
GB1340794A (en) Plasma-mig arc welding
GB1260021A (en) Heating device
GB912915A (en) Electric arc welding