GB1260021A - Heating device - Google Patents

Heating device

Info

Publication number
GB1260021A
GB1260021A GB52575/69A GB5257569A GB1260021A GB 1260021 A GB1260021 A GB 1260021A GB 52575/69 A GB52575/69 A GB 52575/69A GB 5257569 A GB5257569 A GB 5257569A GB 1260021 A GB1260021 A GB 1260021A
Authority
GB
United Kingdom
Prior art keywords
anode
passage
copper
cathode
zirconium
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
GB52575/69A
Inventor
Alan Lawrence Hare
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.)
British Titan Ltd
Original Assignee
British Titan 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 Titan Ltd filed Critical British Titan Ltd
Priority to GB52575/69A priority Critical patent/GB1260021A/en
Publication of GB1260021A publication Critical patent/GB1260021A/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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/222—Non-consumable electrodes
    • 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
    • H05H1/3436—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mechanical Engineering (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

1,260,021. Plasma torches. BRITISH TITAN Ltd. 20 Oct., 1970 [27 Oct., 1969], No. 52575/69. Heading H5H. In a plasma torch of the type in which the cathode 44 has an arc striking surface 45 of hemispherical shape with a central portion 46 of material which resists erosion during use of the torch, the anode 11 has a central axial passage 27, of length at least three times its diameter, and has at its inner end a part hemispherical cavity 26 in a member either integral with the anode 11 or separate therefrom. A retaining member 28 of polytetrafluorethylene is secured to the anode housing 10 (of metal) by bolts (not shown), and carries a gas injection device 30 for feeding gas through ceramic members 38, 39, into the passage 27. Portion 46 is preferably a zirconium metal insert in the cooled copper cathode 44, and the arc is struck between this insert 46 and the walls of the passage 27. Oxygen gas is heated and used for the vapour phase oxidation of titanium tetrachloride, to produce pigmentary titanium dioxide, in a separate reactor (not shown). The passage in the anode may gradually increase in diameter or be flared outwardly. Fig. 1, (not shown). The insert 46 may be a solid cylinder, e.g. of a carbide or nitride of zirconium, silicon or titanium. The cathode may be of silver or a copper/silver alloy. The anode is of copper, tungsten, silver, zirconium or a copper/silver alloy. The length of the anode passage may be up to 20 times its diameter. Various dimensions are specified. The tank can be used for heating gases other than oxygen, e.g. nitrogen, argon and helium.
GB52575/69A 1969-10-27 1969-10-27 Heating device Expired GB1260021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB52575/69A GB1260021A (en) 1969-10-27 1969-10-27 Heating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB52575/69A GB1260021A (en) 1969-10-27 1969-10-27 Heating device

Publications (1)

Publication Number Publication Date
GB1260021A true GB1260021A (en) 1972-01-12

Family

ID=10464454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52575/69A Expired GB1260021A (en) 1969-10-27 1969-10-27 Heating device

Country Status (1)

Country Link
GB (1) GB1260021A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131160A2 (en) * 1983-07-06 1985-01-16 Allied Corporation Non plugging falling film plasma reactor
EP0157407A2 (en) * 1984-04-04 1985-10-09 General Electric Company Method and apparatus for producing a plasma flow having a heated and broadened plasma jet
EP0194634A2 (en) * 1985-03-14 1986-09-17 The Perkin-Elmer Corporation Plasma gun nozzle with extended life
EP0242023A2 (en) * 1986-04-10 1987-10-21 Thermal Dynamics Corporation Plasma-arc torch with gas cooled blow-out electrode
EP1061781A2 (en) * 1999-06-14 2000-12-20 Tec.Mo S.r.l. Method for providing the electric arc starting point in the electrode of a plasma cutting torch, and electrode thus provided

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131160A2 (en) * 1983-07-06 1985-01-16 Allied Corporation Non plugging falling film plasma reactor
EP0131160A3 (en) * 1983-07-06 1986-07-16 Allied Corporation Non plugging falling film plasma reactor
EP0157407A2 (en) * 1984-04-04 1985-10-09 General Electric Company Method and apparatus for producing a plasma flow having a heated and broadened plasma jet
EP0157407A3 (en) * 1984-04-04 1986-12-03 General Electric Company Method and apparatus for producing a plasma flow having a heated and broadened plasma jet
EP0194634A2 (en) * 1985-03-14 1986-09-17 The Perkin-Elmer Corporation Plasma gun nozzle with extended life
EP0194634A3 (en) * 1985-03-14 1987-11-19 The Perkin-Elmer Corporation Plasma gun nozzle with extended life
EP0242023A2 (en) * 1986-04-10 1987-10-21 Thermal Dynamics Corporation Plasma-arc torch with gas cooled blow-out electrode
EP0242023A3 (en) * 1986-04-10 1988-03-30 Thermal Dynamics Corporation Plasma-arc torch with gas cooled blow-out electrode
EP1061781A2 (en) * 1999-06-14 2000-12-20 Tec.Mo S.r.l. Method for providing the electric arc starting point in the electrode of a plasma cutting torch, and electrode thus provided
EP1061781A3 (en) * 1999-06-14 2002-10-16 Tec.Mo S.r.l. Method for providing the electric arc starting point in the electrode of a plasma cutting torch, and electrode thus provided

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee