GB1253298A - Method and apparatus for shielding a gas effluent - Google Patents

Method and apparatus for shielding a gas effluent

Info

Publication number
GB1253298A
GB1253298A GB2368/69A GB236869A GB1253298A GB 1253298 A GB1253298 A GB 1253298A GB 2368/69 A GB2368/69 A GB 2368/69A GB 236869 A GB236869 A GB 236869A GB 1253298 A GB1253298 A GB 1253298A
Authority
GB
United Kingdom
Prior art keywords
annular
stream
jan
inches
sec
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
GB2368/69A
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.)
Union Carbide Corp
Original Assignee
Union Carbide 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
Application filed by Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB1253298A publication Critical patent/GB1253298A/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
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • B23K9/29—Supporting devices adapted for making use of shielding means
    • B23K9/291—Supporting devices adapted for making use of shielding means the shielding means being a gas
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/134—Plasma spraying
    • 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
    • H05H1/341—Arrangements for providing coaxial protecting fluids
    • 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
    • H05H1/3478—Geometrical details

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Geometry (AREA)
  • Arc Welding In General (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

1,253,298. Spray producers. UNION CARBIDE CORP. 15 Jan., 1969 [16 Jan., 1968], No. 2368/69. Heading B2F. [Also in Divisions C6, C7, H3 and H5] A nozzle comprises a central orifice through which a gaseous effluent can flow, surrounded by an annular coaxial orifice through which an inert gas can be forced such that in operation the inert gas forms an uniformly turbulent annular stream with a width W measured in inches of from 0.25 to 4.0 times the square root of the diameter D 0 of the central orifice measured in inches. In operation the longitudinal momentum flux of the stream is greater than 2.0 1b¢/sec ft¢ as given by the expression (Q/A)P<SP>¢</SP> where Q is the flow rate in ft<SP>3</SP>/sec of the annular stream, A is the annular area in ft<SP>2</SP> and p is the density of the gas in 1b/ft<SP>3</SP>. The nozzle may be used in a plasma spray gun.
GB2368/69A 1968-01-16 1969-01-15 Method and apparatus for shielding a gas effluent Expired GB1253298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69826868A 1968-01-16 1968-01-16

Publications (1)

Publication Number Publication Date
GB1253298A true GB1253298A (en) 1971-11-10

Family

ID=24804566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2368/69A Expired GB1253298A (en) 1968-01-16 1969-01-15 Method and apparatus for shielding a gas effluent

Country Status (8)

Country Link
US (1) US3470347A (en)
AT (1) AT293131B (en)
BE (1) BE726980A (en)
CH (1) CH506363A (en)
FR (1) FR1600052A (en)
GB (1) GB1253298A (en)
NL (1) NL163447C (en)
SE (1) SE379661B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985001894A1 (en) * 1983-10-27 1985-05-09 Icab Industrial Coating Ab A process for use with a spraying nozzle, and an arrangement for carrying out the process
GB2149629A (en) * 1983-11-07 1985-06-12 Skf Steel Eng Ab Sealing means for burner/reactor

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2117731B2 (en) * 1967-10-11 1974-08-23 Anvar
US3526362A (en) * 1968-01-16 1970-09-01 Union Carbide Corp Method for shielding a gas effluent
DE2254491C3 (en) * 1972-11-07 1975-04-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen Process for coating surfaces on workpieces by spraying on laminates melted in an arc, as well as an arrangement for carrying out the process
US4121083A (en) * 1977-04-27 1978-10-17 Metco, Inc. Method and apparatus for plasma flame-spraying coating material onto a substrate
US4121082A (en) * 1977-04-27 1978-10-17 Metco, Inc. Method and apparatus for shielding the effluent from plasma spray gun assemblies
USRE31018E (en) * 1980-11-13 1982-08-24 Metco Inc. Method and apparatus for shielding the effluent from plasma spray gun assemblies
FR2545007B1 (en) * 1983-04-29 1986-12-26 Commissariat Energie Atomique METHOD AND DEVICE FOR COATING A WORKPIECE BY PLASMA SPRAYING
US4869936A (en) * 1987-12-28 1989-09-26 Amoco Corporation Apparatus and process for producing high density thermal spray coatings
EP0357694B1 (en) * 1988-02-01 1991-10-30 Nova-Werke Ag Device for producing an inert gas envelope for plasma spraying
US4964568A (en) * 1989-01-17 1990-10-23 The Perkin-Elmer Corporation Shrouded thermal spray gun and method
US5220150A (en) * 1991-05-03 1993-06-15 Regents Of The University Of Minnesota Plasma spray torch with hot anode and gas shroud
US5562841A (en) * 1991-11-01 1996-10-08 Overseas Publishers Association (Amsterdam) Bv Methods and apparatus for treating a work surface
FR2691478B1 (en) * 1992-05-22 1995-02-17 Neyrpic Metallic coatings based on amorphous alloys resistant to wear and corrosion, ribbons obtained from these alloys, process for obtaining and applications to wear-resistant coatings for hydraulic equipment.
DE4339345C2 (en) * 1993-11-18 1995-08-24 Difk Deutsches Inst Fuer Feuer Process for applying a hard material layer by means of plasma spraying
US5518178A (en) * 1994-03-02 1996-05-21 Sermatech International Inc. Thermal spray nozzle method for producing rough thermal spray coatings and coatings produced
US5486383A (en) 1994-08-08 1996-01-23 Praxair Technology, Inc. Laminar flow shielding of fluid jet
US5662266A (en) * 1995-01-04 1997-09-02 Zurecki; Zbigniew Process and apparatus for shrouding a turbulent gas jet
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
US8535759B2 (en) * 2001-09-04 2013-09-17 The Trustees Of Princeton University Method and apparatus for depositing material using a dynamic pressure
US20050026001A1 (en) * 2003-07-31 2005-02-03 Taylor Thomas A. Shielded ceramic thermal spray coating
US7045172B2 (en) * 2003-07-31 2006-05-16 Praxair S.T. Technology, Inc. Method of shielding effluents in spray devices

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016447A (en) * 1956-12-31 1962-01-09 Union Carbide Corp Collimated electric arc-powder deposition process
US3075066A (en) * 1957-12-03 1963-01-22 Union Carbide Corp Article of manufacture and method of making same
US3246114A (en) * 1959-12-14 1966-04-12 Matvay Leo Process for plasma flame formation
NL271417A (en) * 1960-11-15 1900-01-01
US3312566A (en) * 1962-08-01 1967-04-04 Giannini Scient Corp Rod-feed torch apparatus and method
US3358114A (en) * 1962-08-07 1967-12-12 Inoue Kiyoshi Method of and apparatus for the electric spray-coating of substrates
DE1571153A1 (en) * 1962-08-25 1970-08-13 Siemens Ag Plasma spray gun
US3313908A (en) * 1966-08-18 1967-04-11 Giannini Scient Corp Electrical plasma-torch apparatus and method for applying coatings onto substrates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985001894A1 (en) * 1983-10-27 1985-05-09 Icab Industrial Coating Ab A process for use with a spraying nozzle, and an arrangement for carrying out the process
GB2149629A (en) * 1983-11-07 1985-06-12 Skf Steel Eng Ab Sealing means for burner/reactor

Also Published As

Publication number Publication date
NL163447C (en) 1980-09-15
CH506363A (en) 1971-04-30
BE726980A (en) 1969-07-16
DE1815386B2 (en) 1972-12-28
SE379661B (en) 1975-10-20
NL163447B (en) 1980-04-15
FR1600052A (en) 1970-07-20
NL6900571A (en) 1969-07-18
US3470347A (en) 1969-09-30
AT293131B (en) 1971-08-15
DE1815386A1 (en) 1969-07-31

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