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GB1370593A - Plasma spray torch and a method of operating the plasma spray torch - Google Patents

Plasma spray torch and a method of operating the plasma spray torch

Info

Publication number
GB1370593A
GB1370593A GB1229272A GB1229273A GB1370593A GB 1370593 A GB1370593 A GB 1370593A GB 1229272 A GB1229272 A GB 1229272A GB 1229273 A GB1229273 A GB 1229273A GB 1370593 A GB1370593 A GB 1370593A
Authority
GB
United Kingdom
Prior art keywords
nozzle
sprayed
cathode
plasma spray
arc
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
GB1229272A
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.)
BBC BROWN BOVERI and CIE
BBC Brown Boveri AG Switzerland
Original Assignee
BBC BROWN BOVERI and CIE
BBC Brown Boveri AG Switzerland
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 BBC BROWN BOVERI and CIE, BBC Brown Boveri AG Switzerland filed Critical BBC BROWN BOVERI and CIE
Publication of GB1370593A publication Critical patent/GB1370593A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/22—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc
    • B05B7/222—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using an arc
    • B05B7/226—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using an arc the material being originally a particulate material
    • 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
    • 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
    • H05H1/42—Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder or liquid
    • 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
    • H05H1/3484—Convergent-divergent nozzles

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electromagnetism (AREA)
  • Plasma Technology (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Arc Welding Control (AREA)
  • Discharge Heating (AREA)
  • Arc Welding In General (AREA)

Abstract

1370593 Plasma-spray coating BBC BROWN BOVERI & CO Ltd 14 March 1973 [16 March 1972] 12292/73 Heading C7F [Also in Divisions B2 and H5] A plasma spray torch for producing a plasma jet 14 containing particulate material to be sprayed with the use of an electric arc, comprises a cathode 1, a nozzle 2 through which a working gas flows and which is connected as an anode, and means for pulsating in synchronism the flow of working gas through the nozzle 2 and the current of the arc. During each pulse the pressure of the working gas is more than two atmospheres, preferably twenty atmospheres, and the arc current has a value of more than one kA, preferably twenty kA, and between each pulse the pressure and current values are close to or equal to zero. The cathode 1 is reciprocated to open or close the nozzle 2 by means of a cam and lever arrangement 10, 11, but alternatively, the cathode may be reciprocated by magnetic means (not shown). The arc current is switched on when the nozzle 2 is open by means of a switch 13 controlled by the cam 11. The nozzle 2 is of the Laval type and is water cooled. The particulate material to be sprayed is 10-100Á in size and tungsten may be sprayed on to brass or tungsten carbide on to steel.
GB1229272A 1972-03-16 1973-03-14 Plasma spray torch and a method of operating the plasma spray torch Expired GB1370593A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH392872A CH578622A5 (en) 1972-03-16 1972-03-16

Publications (1)

Publication Number Publication Date
GB1370593A true GB1370593A (en) 1974-10-16

Family

ID=4266499

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1229272A Expired GB1370593A (en) 1972-03-16 1973-03-14 Plasma spray torch and a method of operating the plasma spray torch

Country Status (6)

Country Link
US (1) US3803380A (en)
JP (1) JPS48103050A (en)
CH (1) CH578622A5 (en)
DE (1) DE2216981C2 (en)
FR (1) FR2176042B1 (en)
GB (1) GB1370593A (en)

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GB1543164A (en) * 1975-03-05 1979-03-28 Nat Res Dev Plasma torches
DE2544539C2 (en) * 1975-10-04 1977-09-01 Messer Griesheim Gmbh, 6000 Frankfurt Method for closing a keyhole in plasma keyhole welding
JPS5913307B2 (en) * 1976-05-19 1984-03-28 三菱電機株式会社 Welding method
US4142089A (en) * 1977-03-22 1979-02-27 Canadian Patents And Development Limited Pulsed coaxial thermal plasma sprayer
US4430546A (en) * 1981-08-14 1984-02-07 Metco, Inc. Plasma spray gun nozzle
IL77868A (en) * 1985-02-12 1989-07-31 Metallurg Ind Inc Welding apparatus and method for depositing wear surfacing material
US4689463A (en) * 1985-02-12 1987-08-25 Metallurgical Industries, Inc. Welding apparatus method for depositing wear surfacing material and a substrate having a weld bead thereon
US4692584A (en) * 1985-11-29 1987-09-08 Caneer Jr Clifford Gas control system for a plasma arc welding apparatus
US4775774A (en) * 1985-11-29 1988-10-04 Caneer Jr Clifford Plasma arc welding apparatus
US4701590A (en) * 1986-04-17 1987-10-20 Thermal Dynamics Corporation Spring loaded electrode exposure interlock device
US4896016A (en) * 1989-04-24 1990-01-23 Century Mfg. Co. Plasma arc metal cutting apparatus with actuation spring
US4990739A (en) * 1989-07-07 1991-02-05 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Plasma gun with coaxial powder feed and adjustable cathode
FR2677450B1 (en) * 1991-06-07 1993-10-08 Aerospatiale Ste Nationale Indle MODULAR NOZZLE WITH WATER FILM COOLING, PARTICULARLY FOR HIGH TEMPERATURE TESTS OF TESTS OR THE LIKE.
US5233153A (en) * 1992-01-10 1993-08-03 Edo Corporation Method of plasma spraying of polymer compositions onto a target surface
US5518178A (en) * 1994-03-02 1996-05-21 Sermatech International Inc. Thermal spray nozzle method for producing rough thermal spray coatings and coatings produced
DE4406940A1 (en) * 1994-03-03 1995-09-07 Cerasiv Gmbh Process for the production of coated materials
US5599469A (en) * 1994-06-28 1997-02-04 Kabushiki Kaisha Kobe Seiko Sho Plasma welding process
DE4440323A1 (en) * 1994-11-11 1996-05-15 Sulzer Metco Ag Nozzle for a torch head of a plasma spraying unit
US5609451A (en) * 1994-12-16 1997-03-11 Mcstack Usa Display unit with improved support feet
DE19532412C2 (en) * 1995-09-01 1999-09-30 Agrodyn Hochspannungstechnik G Device for surface pretreatment of workpieces
US5858469A (en) * 1995-11-30 1999-01-12 Sermatech International, Inc. Method and apparatus for applying coatings using a nozzle assembly having passageways of differing diameter
US6447632B1 (en) * 1998-03-18 2002-09-10 Ebara Corporation Apparatus and nozzle device for gaseous polishing
US6091043A (en) * 1999-03-19 2000-07-18 Ford Global Technologies, Inc. Depositing metal upon an article
SE529058C2 (en) 2005-07-08 2007-04-17 Plasma Surgical Invest Ltd Plasma generating device, plasma surgical device, use of a plasma surgical device and method for forming a plasma
SE529056C2 (en) 2005-07-08 2007-04-17 Plasma Surgical Invest Ltd Plasma generating device, plasma surgical device and use of a plasma surgical device
SE529053C2 (en) 2005-07-08 2007-04-17 Plasma Surgical Invest Ltd Plasma generating device, plasma surgical device and use of a plasma surgical device
FR2891434A1 (en) * 2005-09-23 2007-03-30 Renault Sas Slipping plasma arc generator comprises a reactor internally delimits a closed enclosure having reactive gas and two removable electrodes that are connected to a source of voltage to start and maintain the reactive gas discharge
US7547861B2 (en) * 2006-06-09 2009-06-16 Morten Jorgensen Vortex generator for plasma treatment
US20070284342A1 (en) * 2006-06-09 2007-12-13 Morten Jorgensen Plasma treatment method and apparatus
US7928338B2 (en) * 2007-02-02 2011-04-19 Plasma Surgical Investments Ltd. Plasma spraying device and method
US8735766B2 (en) * 2007-08-06 2014-05-27 Plasma Surgical Investments Limited Cathode assembly and method for pulsed plasma generation
CN101828433B (en) * 2007-08-06 2013-04-24 普拉斯马外科投资有限公司 Cathode assembly and method for pulsed plasma generation
US7589473B2 (en) * 2007-08-06 2009-09-15 Plasma Surgical Investments, Ltd. Pulsed plasma device and method for generating pulsed plasma
US20090047439A1 (en) * 2007-08-16 2009-02-19 Withers James C Method and apparatus for manufacturing porous articles
EP2547178B1 (en) 2009-11-04 2014-07-16 Siemens Aktiengesellschaft Plasma spray nozzle with internal injection
US8613742B2 (en) * 2010-01-29 2013-12-24 Plasma Surgical Investments Limited Methods of sealing vessels using plasma
US9089319B2 (en) 2010-07-22 2015-07-28 Plasma Surgical Investments Limited Volumetrically oscillating plasma flows
DE202010008661U1 (en) 2010-09-29 2012-01-13 Technische Universität Chemnitz Device for thermal spraying
DE102010037848A1 (en) * 2010-09-29 2012-03-29 Technische Universität Chemnitz Method for spraying welding-rod materials on electric arc wire, involves supplying compressed gas towards base substrate at high speed
DE102012003563B4 (en) * 2012-02-23 2017-07-06 Drägerwerk AG & Co. KGaA Device for disinfecting wound treatment
CN103269558A (en) * 2013-06-05 2013-08-28 南京理工大学 Anode of supersonic plasma spray gun and supersonic plasma spray gun
GB201409693D0 (en) * 2014-05-31 2014-07-16 Element Six Gmbh Thermal spray assembly and method for using it
GB201409694D0 (en) * 2014-05-31 2014-07-16 Element Six Gmbh Method of coating a body, granules for the method and method of making granules
GB201409692D0 (en) * 2014-05-31 2014-07-16 Element Six Gmbh Thermal spray assembly and method for using it
US9704694B2 (en) * 2014-07-11 2017-07-11 Rolls-Royce Corporation Gas cooled plasma spraying device
DE102014215357A1 (en) * 2014-08-04 2016-02-04 Dr. Laure Plasmatechnologie Gmbh plasma generator
CN105228329A (en) * 2015-10-30 2016-01-06 中国科学院力学研究所 A kind of method and arc plasma generator disperseing the electric arc raising generator life-span
EA202090366A1 (en) * 2017-07-21 2020-05-14 Пайродженизис Кэнада Инк. METHOD FOR PROFITABLE PRODUCTION OF ULTRA-SMALL SPHERICAL POWDERS IN LARGE-SCALE USING PLASMA ATOMIZATION USING THE ACCELERATOR
CN107470050B (en) * 2017-09-30 2023-04-18 江西远达环保有限公司 Spray gun with cooling effect for desulfurization and denitrification
CN111043000B (en) * 2019-12-23 2020-12-29 北京航空航天大学 A magnetic plasma thruster
EP4205515A2 (en) 2020-08-28 2023-07-05 Plasma Surgical Investments Limited Systems, methods, and devices for generating predominantly radially expanded plasma flow

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007072A (en) * 1959-01-29 1961-10-31 Gen Electric Radial type arc plasma generator
US3324278A (en) * 1964-01-15 1967-06-06 Union Carbide Corp Welding process

Also Published As

Publication number Publication date
FR2176042A1 (en) 1973-10-26
FR2176042B1 (en) 1977-02-04
CH578622A5 (en) 1976-08-13
DE2216981B1 (en) 1973-07-05
DE2216981C2 (en) 1974-01-31
US3803380A (en) 1974-04-09
JPS48103050A (en) 1973-12-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee