GB1345031A - Cutting by plasma arc torches - Google Patents

Cutting by plasma arc torches

Info

Publication number
GB1345031A
GB1345031A GB34471A GB1345031DA GB1345031A GB 1345031 A GB1345031 A GB 1345031A GB 34471 A GB34471 A GB 34471A GB 1345031D A GB1345031D A GB 1345031DA GB 1345031 A GB1345031 A GB 1345031A
Authority
GB
United Kingdom
Prior art keywords
nozzle
torch
plasma arc
gas
cutting
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
GB34471A
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.)
Electricity Council
Original Assignee
Electricity Council
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 Electricity Council filed Critical Electricity Council
Publication of GB1345031A publication Critical patent/GB1345031A/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
    • 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
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
    • B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
    • 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
    • H05H1/3478—Geometrical details

Landscapes

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

Abstract

1345031 Cutting by plasma arc ELECTRICITY COUNCIL 4 Jan 1972 [4 Jan 1971] 344/71 Heading B3V [Also in Divisions B4 and H5] A workpiece is cut by a plasma arc torch by placing it at or near the centre of a high pressure region 32 of a supersonic plasma jet issuing from the torch nozzle 21. A gas such as argon, nitrogen or a mixture of these containing 70% or 90% argon, is fed through an inlet 17 and holes 18 into a gas dispenser 14, from which it leaves via holes 19 to be funnelled by an insulating shroud 20 into the nozzle 21 where a gas pressure above 30 p.s.i. is produced. The workpiece such as metal foil or cloth is positioned at the centre of the high pressure region 32 nearest to the nozzle 21 of the supersonic plasma jet produced. The throat 22 of the nozzle 21 has an included angle of at least 60 degrees, e.g. 80 degrees and a cylindrical bore 23 having a diameter of 0À5 mm. and a length of at least 1 mm., e.g. 1À78 mm. The nozzle 21 is screwed to a water cooled mount 24 which is secured, together with an adaptor ring 31, to the shroud 20 by a ring 30. The torch also includes a moulded plastics body 10 screwed to a moulded plastics cap 11.
GB34471A 1972-01-04 1972-01-04 Cutting by plasma arc torches Expired GB1345031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34471 1972-01-04

Publications (1)

Publication Number Publication Date
GB1345031A true GB1345031A (en) 1974-01-30

Family

ID=9702748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34471A Expired GB1345031A (en) 1972-01-04 1972-01-04 Cutting by plasma arc torches

Country Status (1)

Country Link
GB (1) GB1345031A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0205318A2 (en) * 1985-06-07 1986-12-17 Magnetronics Limited Improvements in or relating to the cutting of flexible material
EP0257766A2 (en) * 1986-08-21 1988-03-02 The Electricity Council Method and apparatus for cutting or welding

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0205318A2 (en) * 1985-06-07 1986-12-17 Magnetronics Limited Improvements in or relating to the cutting of flexible material
EP0205318A3 (en) * 1985-06-07 1989-01-25 Magnetronics Limited Improvements in or relating to the cutting of flexible material
EP0257766A2 (en) * 1986-08-21 1988-03-02 The Electricity Council Method and apparatus for cutting or welding
GB2194190A (en) * 1986-08-21 1988-03-02 Electricity Council Method and apparatus for cutting or welding
EP0257766A3 (en) * 1986-08-21 1989-01-11 The Electricity Council Method and apparatus for cutting or welding

Similar Documents

Publication Publication Date Title
US4743734A (en) Nozzle for plasma arc torch
ES8704694A1 (en) Welding or cutting plasma torch with nozzle unit.
GB1125806A (en) Plasma guns
GB1326128A (en) Process for removing metal
US2874265A (en) Non-transferred arc torch process and apparatus
GB1272544A (en) Electric arc torches
GB1346790A (en) Plasma jet generators
GB1139092A (en) Arc plasma torch
GB1484652A (en) Plasma spraying
GB1108726A (en) Improvements in and relating to plasma arc burners
GB872563A (en) Improved arc-working process and apparatus
GB969746A (en) Improvements relating to apparatus for projecting materials in powder form
GB1345031A (en) Cutting by plasma arc torches
GB1209672A (en) Plasma-jet generation
GB1022556A (en) Improved apparatus for projecting pulverulent materials
GB958375A (en) Improvements in or relating to constricted arc or plasma jet torches
JPS5768269A (en) Plasma cutting torch
GB1003118A (en) Method of fusing atomizing and spraying a refractory oxide
GB1025678A (en) Improvements in or relating to plasma arc burners
GB1376527A (en) Plasma welding and or cutting torch
GB1520000A (en) Plasma arc torches
GB816255A (en) Electric arc cutting
GB1062496A (en) Cutting and gouging torch
GB1132580A (en) Plasma torches
US3750957A (en) Torch for thermochemical processing of work pieces

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee