EP0461263A4 - Moving plasma torch - Google Patents

Moving plasma torch

Info

Publication number
EP0461263A4
EP0461263A4 EP19910900350 EP91900350A EP0461263A4 EP 0461263 A4 EP0461263 A4 EP 0461263A4 EP 19910900350 EP19910900350 EP 19910900350 EP 91900350 A EP91900350 A EP 91900350A EP 0461263 A4 EP0461263 A4 EP 0461263A4
Authority
EP
European Patent Office
Prior art keywords
plasma torch
increase
moving plasma
moving
plasma
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
EP19910900350
Other versions
EP0461263A1 (en
EP0461263B1 (en
Inventor
Kazushige Nkk Corporation Inokuchi
Akio Nkk Corporation Nagamune
Isamu Nkk Corporation Komine
Norio Nkk Corporation Ao
Hiroshi Nkk Corporation Sekine
Yoshiyuki Nkk Corporation Kanao
Yoshiyuki Nkk Corporation Kitano
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
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
Priority claimed from JP2000165A external-priority patent/JPH03205796A/en
Priority claimed from JP2125355A external-priority patent/JPH0395900A/en
Priority claimed from JP2208044A external-priority patent/JPH03257796A/en
Application filed by NKK Corp filed Critical NKK Corp
Publication of EP0461263A1 publication Critical patent/EP0461263A1/en
Publication of EP0461263A4 publication Critical patent/EP0461263A4/en
Application granted granted Critical
Publication of EP0461263B1 publication Critical patent/EP0461263B1/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
    • H05H1/3421—Transferred arc or pilot arc mode
    • 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
    • H05H1/3442—Cathodes with inserted tip
    • 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
    • H05H1/3468—Vortex generators

Landscapes

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

Abstract

A moving plasma torch which generates a plasma arc between a nozzle and an object to be heated. A thermionic cathode is used as an electrode to secure a cathode point, the speed of plasma arc in the axial direction is suppressed to a degree to generate magnetically unstable condition, and the plasma torch is turned, reversely rotated or vibrated, in order to increase the energy density and to increase the capacity. <IMAGE>
EP91900350A 1990-01-04 1990-11-22 Plasma torch with instable plasma arc Expired - Lifetime EP0461263B1 (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP1290 1990-01-04
JP12/90 1990-01-04
JP165/90 1990-01-04
JP2000165A JPH03205796A (en) 1990-01-04 1990-01-04 Transition type plasma torch
JP2125355A JPH0395900A (en) 1989-05-17 1990-05-17 Migration type plasma torch
JP125355/90 1990-05-17
JP2208044A JPH03257796A (en) 1990-01-04 1990-08-08 Transition type plasma torch
JP208044/90 1990-08-08
PCT/JP1990/001530 WO1991010342A1 (en) 1990-01-04 1990-11-22 Moving plasma torch

Publications (3)

Publication Number Publication Date
EP0461263A1 EP0461263A1 (en) 1991-12-18
EP0461263A4 true EP0461263A4 (en) 1993-01-07
EP0461263B1 EP0461263B1 (en) 1998-04-01

Family

ID=27453077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91900350A Expired - Lifetime EP0461263B1 (en) 1990-01-04 1990-11-22 Plasma torch with instable plasma arc

Country Status (5)

Country Link
EP (1) EP0461263B1 (en)
AT (1) ATE164721T1 (en)
CA (1) CA2048654A1 (en)
DE (1) DE69032205T2 (en)
WO (1) WO1991010342A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5508492A (en) * 1991-03-18 1996-04-16 Aluminum Company Of America Apparatus for extending broad metal surface areas with a magnetically impelled arc
DE102013103508A1 (en) * 2013-04-09 2014-10-09 PLASMEQ GmbH plasma torch

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102946A (en) * 1961-07-24 1963-09-03 Fonberg Zygmunt Electric arc torch
FR2298399A1 (en) * 1975-01-27 1976-08-20 Secheron Soudure Sa METHOD OF USING AN ELECTRIC ARC AND DEVICE FOR ITS IMPLEMENTATION
US4013866A (en) * 1975-03-05 1977-03-22 National Research Development Corporation Plasma torches
US4242562A (en) * 1977-10-18 1980-12-30 Karinsky Viktor Nikolaevich Plasma arc torch head
DE3805732A1 (en) * 1988-02-24 1989-09-07 Linde Ag Plasma burner

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DD151249A1 (en) * 1979-12-18 1981-10-08 Armin Gruenler DUESE FOR A HIGH-POWER PLASMATRON
AT382890B (en) * 1982-10-05 1987-04-27 Voest Alpine Ag PLASMA MELTING OVEN
US4581745A (en) * 1985-01-16 1986-04-08 Timet Electric arc melting apparatus and associated method
JPH0522386Y2 (en) * 1988-03-03 1993-06-08
JPH01299777A (en) * 1988-05-24 1989-12-04 Komatsu Ltd Structure of plasma torch
JP2516804B2 (en) * 1988-12-26 1996-07-24 株式会社小松製作所 Plasma torch
JPH10299777A (en) * 1997-04-30 1998-11-10 Toyota Motor Corp Stopping method for fluid for bearing of swivel device and device therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102946A (en) * 1961-07-24 1963-09-03 Fonberg Zygmunt Electric arc torch
FR2298399A1 (en) * 1975-01-27 1976-08-20 Secheron Soudure Sa METHOD OF USING AN ELECTRIC ARC AND DEVICE FOR ITS IMPLEMENTATION
US4013866A (en) * 1975-03-05 1977-03-22 National Research Development Corporation Plasma torches
US4242562A (en) * 1977-10-18 1980-12-30 Karinsky Viktor Nikolaevich Plasma arc torch head
DE3805732A1 (en) * 1988-02-24 1989-09-07 Linde Ag Plasma burner

Also Published As

Publication number Publication date
WO1991010342A1 (en) 1991-07-11
EP0461263A1 (en) 1991-12-18
DE69032205D1 (en) 1998-05-07
CA2048654A1 (en) 1991-07-05
EP0461263B1 (en) 1998-04-01
ATE164721T1 (en) 1998-04-15
DE69032205T2 (en) 1998-09-17

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