GB974820A - Arc working system - Google Patents

Arc working system

Info

Publication number
GB974820A
GB974820A GB11973/62D GB1197362D GB974820A GB 974820 A GB974820 A GB 974820A GB 11973/62 D GB11973/62 D GB 11973/62D GB 1197362 D GB1197362 D GB 1197362D GB 974820 A GB974820 A GB 974820A
Authority
GB
United Kingdom
Prior art keywords
nozzle
electrode
workpiece
central electrode
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
GB11973/62D
Inventor
Richard Edgar Jahn
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
Publication of GB974820A publication Critical patent/GB974820A/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
    • B23K10/00—Welding or cutting by means of a plasma

Landscapes

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

Abstract

974,820. Cutting and welding by fusion. BRITISH OXYGEN CO. Ltd. March 27, 1963 [March 28, 1962], No. 11973/62. Headings B3R and B3V. [Also in Division H5] A system for arc working a metal workpiece, using a plasma jet torch which has a nozzle electrode through which a high velocity plasma flame flows towards the workpiece from a central electrode disposed upstream of the outlet nozzle electrode, has the nozzle electrode and the central electrode connected to a direct current power source for operation in the non- transferred mode, and the nozzle electrode maintained at substantially the same potential as the workpiece, so that the torch automatically changes over to operation in a semi-transferred mode when the nozzle electrode is brought close to the workpiece .The use in accordance with the above system of a plasma jet torch with a tungsten central electrode and a copper nozzle using high-frequency spark injection to establish the are between the central electrode and the nozzle is described. The system may be applied to metal working processes which require a heating and/or melting operation, such as welding, gouging, localized surface heating, cutting &c.
GB11973/62D 1962-03-28 1962-03-28 Arc working system Expired GB974820A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB974820X 1962-03-28

Publications (1)

Publication Number Publication Date
GB974820A true GB974820A (en) 1964-11-11

Family

ID=30776561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11973/62D Expired GB974820A (en) 1962-03-28 1962-03-28 Arc working system

Country Status (1)

Country Link
GB (1) GB974820A (en)

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