EP0204052A3 - Method and system for controlling the electrode erosion of a plasma torch - Google Patents

Method and system for controlling the electrode erosion of a plasma torch Download PDF

Info

Publication number
EP0204052A3
EP0204052A3 EP85420199A EP85420199A EP0204052A3 EP 0204052 A3 EP0204052 A3 EP 0204052A3 EP 85420199 A EP85420199 A EP 85420199A EP 85420199 A EP85420199 A EP 85420199A EP 0204052 A3 EP0204052 A3 EP 0204052A3
Authority
EP
European Patent Office
Prior art keywords
arc
electrodes
controlling
plasma torch
rotation
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.)
Granted
Application number
EP85420199A
Other languages
French (fr)
Other versions
EP0204052A2 (en
EP0204052B1 (en
Inventor
Michel G. Drouet
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.)
Hydro Quebec
Original Assignee
Hydro Quebec
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 Hydro Quebec filed Critical Hydro Quebec
Priority to AT85420199T priority Critical patent/ATE66562T1/en
Publication of EP0204052A2 publication Critical patent/EP0204052A2/en
Publication of EP0204052A3 publication Critical patent/EP0204052A3/en
Application granted granted Critical
Publication of EP0204052B1 publication Critical patent/EP0204052B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05H1/40—Details, e.g. electrodes, nozzles using applied magnetic fields, e.g. for focusing or rotating the arc
    • 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
    • H05H1/3431—Coaxial cylindrical electrodes

Landscapes

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

Abstract

Method and device for controlling the erosion of the electrodes of a plasma torch, in which an electrical arc is produced when the electrodes are connected to an electrical supply. An axial magnetic field generated by a system of field coil causes the rotation of the extremities of the arc according to a circular trajectory inside the electrodes. The relative position of the field coils is such that there exists a position on the electrode surface where the value of the total magnetic field is a minimum where the arc runs thereby controlling the erosion of the electrodes. According to the invention, the value of current is periodically varied in the system of field coil used to cause the rotation of the arc, thereby producing a controlled axial displacement of the circular trajectory of the extremity of the arc. The plasma torch according to the invention is characterized by structure to periodically vary the value of the current in the field coil system used to cause the rotation of the arc thereby producing a controlled axial displacement of the circular trajectory of the extremity of the arc. Under these conditions, the life of the electrodes is substantially increased.
EP85420199A 1985-06-07 1985-11-08 Method and system for controlling the electrode erosion of a plasma torch Expired - Lifetime EP0204052B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85420199T ATE66562T1 (en) 1985-06-07 1985-11-08 METHOD AND SYSTEM FOR CONTROLLING ELECTRODE EROSION OF A PLASMA TORCH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000483451A CA1248185A (en) 1985-06-07 1985-06-07 Method and system for erosion control of plasma torch electrodes
CA483451 1985-06-07

Publications (3)

Publication Number Publication Date
EP0204052A2 EP0204052A2 (en) 1986-12-10
EP0204052A3 true EP0204052A3 (en) 1987-11-04
EP0204052B1 EP0204052B1 (en) 1991-08-21

Family

ID=4130664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85420199A Expired - Lifetime EP0204052B1 (en) 1985-06-07 1985-11-08 Method and system for controlling the electrode erosion of a plasma torch

Country Status (5)

Country Link
US (1) US4683367A (en)
EP (1) EP0204052B1 (en)
AT (1) ATE66562T1 (en)
CA (1) CA1248185A (en)
DE (1) DE3583864D1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609358B1 (en) * 1987-01-07 1991-11-29 Electricite De France PLASMA TORCH LONGITUDINALLY MOBILE UPSTREAM ARC AND METHOD FOR CONTROLLING ITS MOVEMENT
US5235160A (en) * 1990-03-22 1993-08-10 Matsushita Electric Industrial Co., Ltd. Heat-plasma-jet generator capable of conducting plasma spray or heat-plasma cvd coating in a relatively wide area
FR2685850B1 (en) * 1991-12-31 1994-04-01 Electricite De France IMPROVED METHOD AND POWER SUPPLY FOR PLASMA TORCH.
JPH06126159A (en) * 1992-06-25 1994-05-10 Carter & Ogilvie Res Pty Ltd Method and device for treating material
US5298714A (en) * 1992-12-01 1994-03-29 Hydro-Quebec Plasma torch for the treatment of gases and/or particles and for the deposition of particles onto a substrate
FR2734445B1 (en) * 1995-05-19 1997-07-18 Aerospatiale CONTINUOUS CURRENT ARC PLASMA TORCH, ESPECIALLY INTENDED FOR OBTAINING A CHEMICAL BODY BY DECOMPOSITION OF A PLASMAGEN GAS
IL116939A0 (en) * 1996-01-29 1996-05-14 Netanya Plasmatek Ltd Plasma torch apparatus
US6478841B1 (en) 2001-09-12 2002-11-12 Techint Technologies Inc. Integrated mini-mill for iron and steel making
FR2940584B1 (en) * 2008-12-19 2011-01-14 Europlasma METHOD FOR CONTROLLING THE WEAR OF AT LEAST ONE OF THE ELECTRODES OF A PLASMA TORCH
US8852693B2 (en) 2011-05-19 2014-10-07 Liquipel Ip Llc Coated electronic devices and associated methods
CN108566715B (en) * 2018-04-11 2020-12-18 航天神洁(北京)科技发展有限公司 Plasma gun for preparing acetylene from coal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB966103A (en) * 1960-01-04 1964-08-06 Her Majesty S Principal Sec De Improvements in or relating to arc torches
US3416021A (en) * 1966-05-11 1968-12-10 Navy Usa Arc apparatus employing three dimensional arc motion and dynamic balancing
DE1300182B (en) * 1967-09-29 1969-07-31 Siemens Ag Vortex stabilized arc plasma torch
US3521106A (en) * 1965-04-12 1970-07-21 Siemens Ag Plasma burner with adjustable constriction structure in gas flow path

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283205A (en) * 1961-06-01 1966-11-01 Bolt Harold E De Shifting arc plasma system
US3654513A (en) * 1969-06-30 1972-04-04 Westinghouse Electric Corp Arc heater apparatus and method for producing a diffuse arc discharge
US4194106A (en) * 1975-01-27 1980-03-18 Secheron Soudure S.A. Methods and devices for cutting, eroding, welding and depositing metallic and non-metallic materials by means of an electric arc
CA1105569A (en) * 1977-10-18 1981-07-21 Ivan A. Kuznetsov Plasma arc torch head
US4278868A (en) * 1977-12-19 1981-07-14 Thermatool Corp. Methods and apparatus for heating metal parts with magnetically driven travelling electric arc
US4219726A (en) * 1979-03-29 1980-08-26 Westinghouse Electric Corp. Arc heater construction with total alternating current usage
US4439657A (en) * 1979-07-30 1984-03-27 Institut Fiziki Akademii Nauk Belorusskoi SSR Apparatus for high temperature treatment of rectilinear-generatrix surfaces of nonconductive products

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB966103A (en) * 1960-01-04 1964-08-06 Her Majesty S Principal Sec De Improvements in or relating to arc torches
US3521106A (en) * 1965-04-12 1970-07-21 Siemens Ag Plasma burner with adjustable constriction structure in gas flow path
US3416021A (en) * 1966-05-11 1968-12-10 Navy Usa Arc apparatus employing three dimensional arc motion and dynamic balancing
DE1300182B (en) * 1967-09-29 1969-07-31 Siemens Ag Vortex stabilized arc plasma torch

Also Published As

Publication number Publication date
US4683367A (en) 1987-07-28
CA1248185A (en) 1989-01-03
ATE66562T1 (en) 1991-09-15
EP0204052A2 (en) 1986-12-10
EP0204052B1 (en) 1991-08-21
DE3583864D1 (en) 1991-09-26

Similar Documents

Publication Publication Date Title
EP0204052A3 (en) Method and system for controlling the electrode erosion of a plasma torch
MY108197A (en) A torch device for chemical processes
DE3377037D1 (en) Cylindrical cathode for magnetically-enhanced sputtering
ES2137204T3 (en) METHOD FOR MANUFACTURE OF CORROSION RESISTANT COMPOSITE WIRE.
JPS6340299A (en) Electrode construction of non-transferring plasma torch
AU548620B2 (en) Electrical switchgear
ES2038407T3 (en) ELECTROMAGNETIC VALVE.
GB1528868A (en) Ignition circuit for an internal combustion engine
SU1586871A1 (en) Torch for welding with magneto-controlled arc
SU1540038A1 (en) Electric-arc device
ATE110515T1 (en) PLASMA TORCH WITH ELECTROMAGNETIC COIL TO ROTATE THE ARC.
JPS5758977A (en) Pulse arc welding machine
JPS5768267A (en) Plasma torch
HUT37301A (en) Current supplying roller structure for wire-heat-treating apparatuses of continuous system
SU803134A1 (en) Electric arc heater for heat treatment of materials
SU863238A1 (en) Apparatus for arc working of materials
SU694314A1 (en) Apparatus for vacuum welding with non -consumable electrode
RU1498371C (en) Plasma generator for treating surfaces of dielectric materials
JPS56134069A (en) Arc generator
JPS5774961A (en) Non-electrode discharge lamp
US2952794A (en) Arc lamp
SU936134A1 (en) Controllable spark discharger
RU2106769C1 (en) Electric-arc gas heater
JPS5611180A (en) High-voltage high-frequency generating device for inert gas arc welding
GB2098814A (en) Plasma cutting and welding systems

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19880429

17Q First examination report despatched

Effective date: 19890623

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 66562

Country of ref document: AT

Date of ref document: 19910915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3583864

Country of ref document: DE

Date of ref document: 19910926

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19911127

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19911129

Year of fee payment: 7

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19921108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19921109

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19921108

EPTA Lu: last paid annual fee
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 85420199.3

Effective date: 19930610

REG Reference to a national code

Ref country code: FR

Ref legal event code: R1

REG Reference to a national code

Ref country code: FR

Ref legal event code: D4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19960625

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19960701

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960927

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19961021

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19961118

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19961126

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19961130

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971108

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971130

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19971130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971130

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971130

BERE Be: lapsed

Owner name: HYDRO-QUEBEC

Effective date: 19971130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980601

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980801

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19980601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST