EP0372500A3 - Plasma arc welding apparatus - Google Patents

Plasma arc welding apparatus Download PDF

Info

Publication number
EP0372500A3
EP0372500A3 EP19890122434 EP89122434A EP0372500A3 EP 0372500 A3 EP0372500 A3 EP 0372500A3 EP 19890122434 EP19890122434 EP 19890122434 EP 89122434 A EP89122434 A EP 89122434A EP 0372500 A3 EP0372500 A3 EP 0372500A3
Authority
EP
European Patent Office
Prior art keywords
circuit
cable
burner
overload
arc welding
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.)
Withdrawn
Application number
EP19890122434
Other languages
German (de)
French (fr)
Other versions
EP0372500A2 (en
Inventor
George D. Blankenship
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.)
Lincoln Electric Co
Original Assignee
Lincoln Electric Co
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 Lincoln Electric Co filed Critical Lincoln Electric Co
Publication of EP0372500A2 publication Critical patent/EP0372500A2/en
Publication of EP0372500A3 publication Critical patent/EP0372500A3/en
Withdrawn legal-status Critical Current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
    • H05H1/3436—Hollow cathodes with internal coolant flow
    • 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
    • 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
    • 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
    • H05H1/3473—Safety means

Landscapes

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

Abstract

Plasmalichtbogenschweißvorichtung mit einem Überlastungsprüf­ kreis, der einen Kurzschluß zwischen der Elektrode (20) und der Brennerdüse (30) erfaßt und die Stromzufuhr abschaltet, wenn der Kurzschluß festgestellt wird. In dem Brennerkabel (130) ist ein Sensorkreis (138, 140) vorgesehen, der den Überlastprüfkreis (82) einschaltet, wenn das Kabel (130) ernstlich durchschlagen wird. Zu dem Sensorkreis gehört eine im Kabel (130) eingebettete Abschirmfolie (138), welche den Hauptleiter (132) umschließt und an den ein Erdungsleiter (140) angeschlossen ist. Der Erdungsleiter (140) erfaßt einen Kurzschluß zwischen der Abschirmfolie (138) und dem Hauptleiter (132), der von einem eindringenden Fremdkörper (150) verursacht wird, und er betätigt den Überlastprüf­ kreis (82). Zusätzlich ist der Überlastprüfkreis (82) in Verbindung mit einem einzigen Durchgangs-Abschaltkreis (121) wirksam, um die Sicherheit des Brenners zu gewährleisten. Ferner ist ein gleichgerichteter Steuerkreis vorgesehen, um einen stabilen Lichtbogen aufrechtzuerhalten und eine Erosion der Düse und ein damit verbundenes Freilegen der Elektrode (20) zu verhindern. Plasma arc welding device with an overload test circuit, the short circuit between the electrode (20) and the burner nozzle (30) is detected and the power supply is switched off, if the short circuit is detected. In the burner cable (130) a sensor circuit (138, 140) is provided, which Overload test circuit (82) switches on when the cable (130) will seriously break through. One belongs to the sensor circuit in the cable (130) embedded shielding film (138), which the Main conductor (132) encloses and to which an earth conductor (140) is connected. The earth conductor (140) detects a short circuit between the shielding film (138) and the Main conductor (132) from an intruding foreign body (150) is caused and he operates the overload check circle (82). In addition, the overload test circuit (82) is in Connection to a single continuity cut-off circuit (121) effective to ensure the safety of the burner. A control circuit with the same direction is also provided, to maintain a stable arc and a Erosion of the nozzle and an associated exposure of the To prevent electrode (20).

EP19890122434 1988-12-05 1989-12-05 Plasma arc welding apparatus Withdrawn EP0372500A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US280240 1988-12-05
US07/280,240 US4929811A (en) 1988-12-05 1988-12-05 Plasma arc torch interlock with disabling control arrangement system

Publications (2)

Publication Number Publication Date
EP0372500A2 EP0372500A2 (en) 1990-06-13
EP0372500A3 true EP0372500A3 (en) 1991-06-05

Family

ID=23072255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890122434 Withdrawn EP0372500A3 (en) 1988-12-05 1989-12-05 Plasma arc welding apparatus

Country Status (9)

Country Link
US (1) US4929811A (en)
EP (1) EP0372500A3 (en)
JP (1) JPH03114678A (en)
KR (1) KR920004844B1 (en)
AU (1) AU614449B2 (en)
DK (1) DK612489A (en)
FI (1) FI895806A0 (en)
NO (1) NO894831L (en)
PT (1) PT92492B (en)

Families Citing this family (48)

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FR2654294B1 (en) * 1989-11-08 1992-02-14 Aerospatiale PLASMA TORCH WITH SHORT CIRCUIT PRIMING.
DE4032395A1 (en) * 1990-10-12 1992-04-16 Messer Griesheim Gmbh METHOD AND DEVICE FOR WELDING OR CUTTING
FR2669847B1 (en) * 1990-11-29 1995-11-24 Trafimet Trafilerie Metalliche PLASMA CUTTING TORCH, IN WHICH THE PRIMING OF THE PRIMING IS CARRIED OUT USING A CONTACT.
US5183990A (en) * 1991-04-12 1993-02-02 The Lincoln Electric Company Method and circuit for protecting plasma nozzle
US5216221A (en) * 1992-01-17 1993-06-01 Esab Welding Products, Inc. Plasma arc torch power disabling mechanism
US5578831A (en) * 1995-03-23 1996-11-26 Associated Universities, Inc. Method and apparatus for charged particle propagation
DE19548606A1 (en) * 1995-09-13 1997-03-20 Anton Koukal Initiating operation of plasma cutting machine
US5681489A (en) * 1995-12-13 1997-10-28 The Esab Group, Inc. Plasma arc torch including means for disabling power source
US5961855A (en) * 1998-01-28 1999-10-05 Thermal Dynamics Corporation Low voltage electrical based parts-in-place (PIP) system for contact start torch
US5990443A (en) * 1998-03-12 1999-11-23 Thermal Dynamics Corporation Plasma torch pilot arc circuit
US6350960B1 (en) 2000-11-28 2002-02-26 Thermal Dynamics Corporation Parts-in-place safety reset circuit and method for contact start plasma-arc torch
US6369350B1 (en) * 2001-05-30 2002-04-09 Thermal Dynamics Corporation Plasma-arc torch system with pilot re-attach circuit and method
US6794601B2 (en) 2002-09-05 2004-09-21 Thermal Dynamics Corporation Plasma arc torch system with pilot re-attach circuit and method
DE102004033775A1 (en) * 2004-07-12 2006-02-02 Mapeko Feuer Gmbh + Co. Igniter for pilot burner has electrically conducting section which is flexible and which has ignition cable guided in conduit which is flexible at right angles to ignition cable's longitudinal direction
US7087856B2 (en) * 2004-11-03 2006-08-08 The Esab Group, Inc. System and method for determining an operational condition of a torch
CA2543057C (en) * 2006-04-10 2013-07-16 Stackteck Systems Ltd. Composite nozzle cap
US8664566B2 (en) * 2006-06-07 2014-03-04 Sansha Electric Manufacturing Co., Ltd. Arc welding apparatus and method
CN101801583B (en) * 2007-07-12 2013-06-12 小松产机株式会社 Plasma torch, nozzle of plasma torch, and plasma processing machine
US8927895B2 (en) * 2007-07-31 2015-01-06 Hypertherm, Inc. Method and apparatus for sensing the length of a lead
US20100276397A1 (en) * 2009-05-01 2010-11-04 Baker Hughes Incorporated Electrically isolated gas cups for plasma transfer arc welding torches, and related methods
US8258423B2 (en) * 2009-08-10 2012-09-04 The Esab Group, Inc. Retract start plasma torch with reversible coolant flow
US8258424B2 (en) * 2009-08-20 2012-09-04 The Esab Group, Inc. Plasma torch with electrode wear detection system
US10455682B2 (en) 2012-04-04 2019-10-22 Hypertherm, Inc. Optimization and control of material processing using a thermal processing torch
US10486260B2 (en) * 2012-04-04 2019-11-26 Hypertherm, Inc. Systems, methods, and devices for transmitting information to thermal processing systems
KR101320430B1 (en) * 2010-11-16 2013-10-23 이민선 Plasma heating system
KR101880622B1 (en) * 2011-12-16 2018-07-24 한국전자통신연구원 plasma jet assembly and plasma brush including the same
US11783138B2 (en) * 2012-04-04 2023-10-10 Hypertherm, Inc. Configuring signal devices in thermal processing systems
US20150332071A1 (en) 2012-04-04 2015-11-19 Hypertherm, Inc. Configuring Signal Devices in Thermal Processing Systems
US11684995B2 (en) 2013-11-13 2023-06-27 Hypertherm, Inc. Cost effective cartridge for a plasma arc torch
US11278983B2 (en) 2013-11-13 2022-03-22 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
US10456855B2 (en) 2013-11-13 2019-10-29 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
US11432393B2 (en) 2013-11-13 2022-08-30 Hypertherm, Inc. Cost effective cartridge for a plasma arc torch
US9981335B2 (en) 2013-11-13 2018-05-29 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
US20150196977A1 (en) 2014-01-13 2015-07-16 Camarc Llc Electrode and method changing an electrode to a welding torch
US20160107260A1 (en) * 2014-01-13 2016-04-21 Camarc Llc Welding nozzle of a welding torch
US20160129531A1 (en) * 2014-01-13 2016-05-12 Camarc Llc Electrode of a welding torch
US10786924B2 (en) 2014-03-07 2020-09-29 Hypertherm, Inc. Waterjet cutting head temperature sensor
US20150269603A1 (en) 2014-03-19 2015-09-24 Hypertherm, Inc. Methods for Developing Customer Loyalty Programs and Related Systems and Devices
AU2015301727B2 (en) 2014-08-12 2020-05-14 Hypertherm, Inc. Cost effective cartridge for a plasma arc torch
KR102586885B1 (en) 2015-08-04 2023-10-06 하이퍼썸, 인크. Cartridges for liquid-cooled plasma arc torches
US10863610B2 (en) * 2015-08-28 2020-12-08 Lincoln Global, Inc. Plasma torch and components thereof
DE102016108450B4 (en) * 2016-05-06 2020-01-02 Cinogy Gmbh Treatment arrangement and method for producing a treatment arrangement
JP6922034B2 (en) * 2017-04-04 2021-08-18 株式会社Ｆｕｊｉ Plasma generator and current detection method in plasma generator
CN110463353B (en) * 2017-04-04 2022-01-11 株式会社富士 Plasma generating device
CN108372349B (en) * 2018-03-07 2023-06-30 上海威特力焊接设备制造股份有限公司 Electric shock protection device and method for plasma cutting machine
JP7112912B2 (en) * 2018-08-31 2022-08-04 株式会社Fuji Plasma generator and information processing method
WO2020059809A1 (en) * 2018-09-20 2020-03-26 積水化学工業株式会社 Plasma irradiation device
JP7309368B2 (en) * 2019-01-21 2023-07-18 日鉄溶接工業株式会社 Plasma processing equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1195420A (en) * 1967-11-09 1970-06-17 Westinghouse Brake & Signal Electric Power Supplies for Arc Welding
US3745321A (en) * 1971-07-28 1973-07-10 L Persits Method of control over operating conditions of an apparatus for plasma-arc treatment of articles and an apparatus for plasma-arc treatment
DE2541166A1 (en) * 1974-10-08 1976-04-22 Mansfeld Kombinat W Pieck Veb PROCEDURE AND EQUIPMENT FOR PROTECTING THE NOZZLE OF WORKPIECE POLARIZED PLASMA TORCHES
US4247752A (en) * 1978-03-31 1981-01-27 Westinghouse Electric Corp. Constant current arc welder
US4663515A (en) * 1985-11-04 1987-05-05 Thermal Dynamics Corporation Plasma-arc torch interlock with flow sensing

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US4049946A (en) * 1975-11-03 1977-09-20 Eutectic Corporation Power supply for electric arc welding
JPS5541632A (en) * 1978-09-15 1980-03-24 Matsushita Electric Works Ltd Plane heater temperature control system
US4330700A (en) * 1980-03-25 1982-05-18 Peter Jagieniak Plasmaburner with contact protection
US4585921A (en) * 1983-07-20 1986-04-29 Thermal Dynamics Corporation Torch operation interlock device
FR2562748B1 (en) * 1984-04-04 1989-06-02 Soudure Autogene Francaise WELDING TORCH OR PLASMA CUTTING
FR2578137B1 (en) * 1985-02-22 1987-03-27 Soudure Autogene Francaise PLASMA WELDING OR CUTTING TORCH PROVIDED WITH A NOZZLE CARTRIDGE
JPH0641036B2 (en) * 1985-03-23 1994-06-01 大阪電気株式会社 Plasma arc cutting device
IT1191365B (en) * 1986-06-26 1988-03-16 Cebora Spa Control circuit for plasma arc cutting and welding torch
JPS6384774A (en) * 1986-09-26 1988-04-15 Daihatsu Motor Co Ltd Short circuit detector for secondary cable for welder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1195420A (en) * 1967-11-09 1970-06-17 Westinghouse Brake & Signal Electric Power Supplies for Arc Welding
US3745321A (en) * 1971-07-28 1973-07-10 L Persits Method of control over operating conditions of an apparatus for plasma-arc treatment of articles and an apparatus for plasma-arc treatment
DE2541166A1 (en) * 1974-10-08 1976-04-22 Mansfeld Kombinat W Pieck Veb PROCEDURE AND EQUIPMENT FOR PROTECTING THE NOZZLE OF WORKPIECE POLARIZED PLASMA TORCHES
US4247752A (en) * 1978-03-31 1981-01-27 Westinghouse Electric Corp. Constant current arc welder
US4663515A (en) * 1985-11-04 1987-05-05 Thermal Dynamics Corporation Plasma-arc torch interlock with flow sensing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 311 (M-734)(3158) 24 August 1988, & JP-A-63 084 774 (DAIHATSU MOTOR CO LTD) 15 April 1988, *

Also Published As

Publication number Publication date
FI895806A0 (en) 1989-12-04
PT92492A (en) 1990-06-29
DK612489D0 (en) 1989-12-05
US4929811A (en) 1990-05-29
AU614449B2 (en) 1991-08-29
AU4593889A (en) 1990-06-07
DK612489A (en) 1990-06-06
EP0372500A2 (en) 1990-06-13
NO894831D0 (en) 1989-12-04
NO894831L (en) 1990-06-06
JPH03114678A (en) 1991-05-15
KR920004844B1 (en) 1992-06-19
PT92492B (en) 1995-09-12
KR900009206A (en) 1990-07-02

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