GB1524222A - Method of and apparatus for protecting the nozzle of a plasma torch - Google Patents

Method of and apparatus for protecting the nozzle of a plasma torch

Info

Publication number
GB1524222A
GB1524222A GB4099975A GB4099975A GB1524222A GB 1524222 A GB1524222 A GB 1524222A GB 4099975 A GB4099975 A GB 4099975A GB 4099975 A GB4099975 A GB 4099975A GB 1524222 A GB1524222 A GB 1524222A
Authority
GB
United Kingdom
Prior art keywords
arc
nozzle
plasma torch
oct
workpiece
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
GB4099975A
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.)
Mansfeld Kom Wilhelm Pieck V E
Original Assignee
Mansfeld Kom Wilhelm Pieck V E
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 Mansfeld Kom Wilhelm Pieck V E filed Critical Mansfeld Kom Wilhelm Pieck V E
Publication of GB1524222A publication Critical patent/GB1524222A/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
    • H05H1/36—Circuit arrangements
    • 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
    • B23K10/006—Control circuits therefor

Landscapes

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

Abstract

1524222 Detecting double arcs in plasma torches MANSFELD KOMBINAT WILHELM PIECK VEB 7 Oct 1975 [8 Oct 1974] 40999/75 Heading H2K In a plasma torch having a nozzle 2 for shaping the arc between a cathode 1 and a workpiece 6, an auxiliary alternating voltage (9, 10) is applied between the nozzle and the arc and if the resultant alternating nozzle current becomes excessive, indicating incipient breakdown of the gas layer insulating the nozzle from the arc, the main arc current is reduced or interrupted (13). Capacitors 12 connected between the A.C. source 9, 10 and both the cathode 1 and workpiece 6 effectively couple the A.C. source to the arc without interfering with the normal, direct, arc current.
GB4099975A 1974-10-08 1975-10-07 Method of and apparatus for protecting the nozzle of a plasma torch Expired GB1524222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD18153174A DD132706A3 (en) 1974-10-08 1974-10-08 METHOD AND DEVICE FOR PROTECTING THE DUTIES OF WORK-PLASTERED PLASMA ROLLERS

Publications (1)

Publication Number Publication Date
GB1524222A true GB1524222A (en) 1978-09-06

Family

ID=5497561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4099975A Expired GB1524222A (en) 1974-10-08 1975-10-07 Method of and apparatus for protecting the nozzle of a plasma torch

Country Status (4)

Country Link
JP (1) JPS5191850A (en)
DD (1) DD132706A3 (en)
DE (1) DE2541166C2 (en)
GB (1) GB1524222A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10039178B2 (en) 2010-07-16 2018-07-31 Hypertherm, Inc. Failure event detection in a plasma arc torch

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD151248A1 (en) * 1978-12-21 1981-10-08 Wenzel Bernd Dieter PROTECTION DEVICE FOR PLASMATRONES HIGH PERFORMANCE
DD142267B1 (en) * 1979-03-06 1980-12-24 Jochen Boehme Plasma torch with contact protection
US4330700A (en) * 1980-03-25 1982-05-18 Peter Jagieniak Plasmaburner with contact protection
FR2562453B1 (en) * 1984-04-04 1988-02-26 Soudure Autogene Francaise VERY LOW POWER PLASMA CUTTING EQUIPMENT
DE3435680A1 (en) * 1984-09-28 1986-04-03 Fried. Krupp Gmbh, 4300 Essen PLASMA TORCH
US4929811A (en) * 1988-12-05 1990-05-29 The Lincoln Electric Company Plasma arc torch interlock with disabling control arrangement system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1565733A1 (en) * 1966-11-30 1970-07-16 Messer Griesheim Gmbh Device for regulating the distance between the plasma torch and workpiece surfaces
DE2140241C3 (en) * 1971-08-26 1975-02-27 Ilja Samojlowitsch Schapiro Method for regulating the operating status of a system for plasma arc processing of workpieces and plasma arc processing system
DD97364A1 (en) * 1972-06-13 1973-05-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10039178B2 (en) 2010-07-16 2018-07-31 Hypertherm, Inc. Failure event detection in a plasma arc torch

Also Published As

Publication number Publication date
DD132706A3 (en) 1978-10-25
DE2541166A1 (en) 1976-04-22
JPS5191850A (en) 1976-08-12
DE2541166C2 (en) 1982-05-13

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921007