US3235700A - Apparatus for projecting materials in powder form by means of a concentrated electric arc - Google Patents

Apparatus for projecting materials in powder form by means of a concentrated electric arc Download PDF

Info

Publication number
US3235700A
US3235700A US291851A US29185163A US3235700A US 3235700 A US3235700 A US 3235700A US 291851 A US291851 A US 291851A US 29185163 A US29185163 A US 29185163A US 3235700 A US3235700 A US 3235700A
Authority
US
United States
Prior art keywords
nozzle
apparatus
means
powder form
powder
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 - Lifetime
Application number
US291851A
Inventor
Mondain-Monval Gerard
Audric Guy
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.)
Air Liquide SA
Original Assignee
Air Liquide SA
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 to FR905359A priority Critical patent/FR1336870A/en
Application filed by Air Liquide SA filed Critical Air Liquide SA
Application granted granted Critical
Publication of US3235700A publication Critical patent/US3235700A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16Spraying 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
    • B05B7/22Spraying 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
    • B05B7/222Spraying 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
    • B05B7/226Spraying 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
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C4/00Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/134Plasma spraying
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05HPLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00Generating plasma; Handling plasma
    • H05H1/24Generating plasma
    • H05H1/26Plasma torches
    • H05H1/32Plasma torches using an arc
    • H05H1/42Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder, liquid

Description

:- Feb. 15, 1966 G. MONDAlN-MONVAL ETAL 3,235,700

APPARATUS FOR PROJECTING MATERIALS IN POWDER FORM BY MEANS OF A CONCENTRATED ELECTRIC ARC Filed July 1, 1965 Pisa 3,235,700 APPARATUS FOR PROEECTiNG MATERIALS IN POWDER FORM BY MEANS UP A CONCEN- TRATED ELECTRIC ARC Grard Mondain-Monval and Guy Audric, Paris, France, assignors to LAir Liquide, Soeiete Anonyme pour IEtude et lExploitation des precedes Georges Claude Filed July 1, 1963, Ser. No. 291,851 Claims priority, application France, July 27, 1962, 905,359, Patent 1,336,870 3 Claims. (Cl. 219-46) The present invention relates to the projection of materials in powder form, more especially for obtaining me tallic or refractory coatings on articles of any type, by means of a jet of ionised gas which is brought to very high temperature by an electric arc (plasma) or a blow-pipe flame. Apparatus of this type is already known in which the powder to be projected, suspended in an auxiliary gaseous current, is introduced into the plasma jet or into the flame through a radial conduit of circular section opening into the end portion of the neck of the nozzle through which the said jet escapes, and in fact downstream of the inlet of the nozzle. This method of introducing the powdcr into the column of hot gas or flames requires difiicult adjustments in the injection of the powder in order to obtain a good distribution of the powder grains within this column. In addition, the inlet tube for the powder, which is connected by means of a flange to the radial conduit opening into the neck of the column, is considerably overheated.

The apparatus forming the subject of the present invention enables these disadvantages to be overcome; it is characterized in that the powder supply conduit extending through the wall of the nozzle has in the direction at right angles to the axis of said nozzle a width approximately equal to the diameter of the nozzle, while its depth, measured parallel to the axis of the nozzle, is sutliciently small to spread out the jet of powder as a thin sheet perpendicular to the axis of the hot gas jet, which jet intercepts the said sheet over its entire Width so that the grains of powder are distributed regularly over the entire section of the jet.

This conduit may in particular be formed by a simple incision or milling formed in the nozzle at right angles to its axis.

By way of example, one embodiment of the invention is hereinafter described and illustrated in the accompanying drawing.

FIGURE 1 is a diagrammatic perspective view of the end of the projection nozzle.

FIGURE 2 is a perspective view of the powder supply device.

FIGURE 3 is an axial section of the end of a plasma I United States Patent Patented Feb. 15, 1966 projection apparatus equipped with the device according to the invention.

As shown in FIGURE 1, the nozzle 1 has in its end portion a transverse passage 2 formed by an incision, a milling or a simple saw cut at right angles to the axis of the nozzle and extending to the Vicinity of the horizontal diametrical plane of the nozzle so as to open into the duct 3 of the latter through an opening at an angle in the region of The supply tube 4 for the auxiliary gas jet containing the powder to be projected in suspension is connected to the opening 2 by means of a collar 5 of a material with a relatively low heat-conductive power, for example stainless steel, fitting over the end 1 of the nozzle, on which it may be secured by a locking screw 6.

In FIGURE 3, the collar 5 is shown in position on the external end bearing surface 1 of the nozzle of a plasma torch. The powder conduit 4 opens into the collar 5 facing the milling 2 of the nozzle, which opens into the central duct 3 of the nozzle, perpendicularly of the axis of the latter.

The nozzle is provided with an external shoulder 7 which enables the collar 5 to be secured in position with the conduit 4 just facing the milling 2 of the nozzle.

In known manner, the nozzle is extended towards the interior of the torch by a sleeve 8 surrounding the central electrode 9 and constituting the internal wall of a chamber 10 in which the cooling water for the nozzle circulates, the external Wall of this chamber being formed by the body 11 of the torch, to which the nozzle is fixed by a cap nut 12 with interposition of a packing 13.

What we claim is:

1. Apparatus for introducing materials in powder form into a projection nozzle comprising an opening through the wall of the nozzle having a width substantially equal to the diameter of the nozzle and a height less than the width, and means for supplying powder to said opening.

2. Apparatus for projecting materials in powder form into a nozzle comprising an incision in the wall of the nozzle and means for supplying powder to said incision, said incision intersecting the inner wall of the nozzle along substantially half the periphery of the cross-section of said inner wall and having a height less than the inner diameter of the nozzle.

3. An apparatus as claimed in claim 1 wherein said supplying means comprises a collar of low heat conductivity, an opening through said collar, and a tube connected to the collar.

References Cited by the Examiner UNITED STATES PATENTS 3,010,009 11/1961 Ducati 219-76 RICHARD M. WOOD, Primary Examiner.

Claims (1)

1. APPARATUS FOR INTRODUCING MATERIALS IN POWDER FORM INTO A PROJECTION NOZZLE COMPRISING AN OPENING THROUGH THE WALL OF THE NOZZLE HAVING A WIDTH SUBSTANTIALLY EQUAL TO THE DIAMETER OF THE NOZZLE AND A HIGHT LESS THAN THE WIDTH, AND MEANS FOR SUPPLYING POWDER TO SAID OPENING.
US291851A 1962-07-27 1963-07-01 Apparatus for projecting materials in powder form by means of a concentrated electric arc Expired - Lifetime US3235700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR905359A FR1336870A (en) 1962-07-27 1962-07-27 An apparatus for spraying powdered materials by means of a concentrated arc

Publications (1)

Publication Number Publication Date
US3235700A true US3235700A (en) 1966-02-15

Family

ID=8784113

Family Applications (1)

Application Number Title Priority Date Filing Date
US291851A Expired - Lifetime US3235700A (en) 1962-07-27 1963-07-01 Apparatus for projecting materials in powder form by means of a concentrated electric arc

Country Status (8)

Country Link
US (1) US3235700A (en)
BE (1) BE634714A (en)
DE (1) DE1261789B (en)
ES (1) ES289618A1 (en)
FR (1) FR1336870A (en)
GB (1) GB969746A (en)
LU (1) LU44018A1 (en)
NL (1) NL295849A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004028222A1 (en) * 2002-09-18 2004-04-01 Volvo Aero Corporation A thermal spraying device
US20040129222A1 (en) * 2002-09-18 2004-07-08 Volvo Aero Corporation Thermal spraying device
US20080277092A1 (en) * 2005-04-19 2008-11-13 Layman Frederick P Water cooling system and heat transfer system
US20110143041A1 (en) * 2009-12-15 2011-06-16 SDCmaterials, Inc. Non-plugging d.c. plasma gun
US20110143933A1 (en) * 2009-12-15 2011-06-16 SDCmaterials, Inc. Advanced catalysts for automotive applications
US20110143930A1 (en) * 2009-12-15 2011-06-16 SDCmaterials, Inc. Tunable size of nano-active material on nano-support
US20110143916A1 (en) * 2009-12-15 2011-06-16 SDCmaterials, Inc. Catalyst production method and system
US8859035B1 (en) 2009-12-15 2014-10-14 SDCmaterials, Inc. Powder treatment for enhanced flowability
US8969237B2 (en) 2011-08-19 2015-03-03 SDCmaterials, Inc. Coated substrates for use in catalysis and catalytic converters and methods of coating substrates with washcoat compositions
US9089840B2 (en) 2007-10-15 2015-07-28 SDCmaterials, Inc. Method and system for forming plug and play oxide catalysts
US9156025B2 (en) 2012-11-21 2015-10-13 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9216406B2 (en) 2011-02-23 2015-12-22 SDCmaterials, Inc. Wet chemical and plasma methods of forming stable PtPd catalysts
US9427732B2 (en) 2013-10-22 2016-08-30 SDCmaterials, Inc. Catalyst design for heavy-duty diesel combustion engines
US9511352B2 (en) 2012-11-21 2016-12-06 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9517448B2 (en) 2013-10-22 2016-12-13 SDCmaterials, Inc. Compositions of lean NOx trap (LNT) systems and methods of making and using same
US9522388B2 (en) 2009-12-15 2016-12-20 SDCmaterials, Inc. Pinning and affixing nano-active material
US9586179B2 (en) 2013-07-25 2017-03-07 SDCmaterials, Inc. Washcoats and coated substrates for catalytic converters and methods of making and using same
US9687811B2 (en) 2014-03-21 2017-06-27 SDCmaterials, Inc. Compositions for passive NOx adsorption (PNA) systems and methods of making and using same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010009A (en) * 1958-09-29 1961-11-21 Plasmadyne Corp Method and apparatus for uniting materials in a controlled medium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1260262A (en) * 1959-08-21 1961-05-05 Metallizing Engineering Co Inc Apparatus as spray and powder material spray process using a flame formed by a plasma

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010009A (en) * 1958-09-29 1961-11-21 Plasmadyne Corp Method and apparatus for uniting materials in a controlled medium

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040129222A1 (en) * 2002-09-18 2004-07-08 Volvo Aero Corporation Thermal spraying device
US7557324B2 (en) * 2002-09-18 2009-07-07 Volvo Aero Corporation Backstream-preventing thermal spraying device
WO2004028222A1 (en) * 2002-09-18 2004-04-01 Volvo Aero Corporation A thermal spraying device
US9216398B2 (en) 2005-04-19 2015-12-22 SDCmaterials, Inc. Method and apparatus for making uniform and ultrasmall nanoparticles
US20080277092A1 (en) * 2005-04-19 2008-11-13 Layman Frederick P Water cooling system and heat transfer system
US9023754B2 (en) 2005-04-19 2015-05-05 SDCmaterials, Inc. Nano-skeletal catalyst
US9719727B2 (en) 2005-04-19 2017-08-01 SDCmaterials, Inc. Fluid recirculation system for use in vapor phase particle production system
US9180423B2 (en) 2005-04-19 2015-11-10 SDCmaterials, Inc. Highly turbulent quench chamber
US9599405B2 (en) 2005-04-19 2017-03-21 SDCmaterials, Inc. Highly turbulent quench chamber
US9132404B2 (en) 2005-04-19 2015-09-15 SDCmaterials, Inc. Gas delivery system with constant overpressure relative to ambient to system with varying vacuum suction
US9186663B2 (en) 2007-10-15 2015-11-17 SDCmaterials, Inc. Method and system for forming plug and play metal compound catalysts
US9302260B2 (en) 2007-10-15 2016-04-05 SDCmaterials, Inc. Method and system for forming plug and play metal catalysts
US9737878B2 (en) 2007-10-15 2017-08-22 SDCmaterials, Inc. Method and system for forming plug and play metal catalysts
US9597662B2 (en) 2007-10-15 2017-03-21 SDCmaterials, Inc. Method and system for forming plug and play metal compound catalysts
US9592492B2 (en) 2007-10-15 2017-03-14 SDCmaterials, Inc. Method and system for forming plug and play oxide catalysts
US9089840B2 (en) 2007-10-15 2015-07-28 SDCmaterials, Inc. Method and system for forming plug and play oxide catalysts
US9522388B2 (en) 2009-12-15 2016-12-20 SDCmaterials, Inc. Pinning and affixing nano-active material
US9126191B2 (en) 2009-12-15 2015-09-08 SDCmaterials, Inc. Advanced catalysts for automotive applications
US9149797B2 (en) 2009-12-15 2015-10-06 SDCmaterials, Inc. Catalyst production method and system
US8992820B1 (en) 2009-12-15 2015-03-31 SDCmaterials, Inc. Fracture toughness of ceramics
US8932514B1 (en) 2009-12-15 2015-01-13 SDCmaterials, Inc. Fracture toughness of glass
US8906498B1 (en) 2009-12-15 2014-12-09 SDCmaterials, Inc. Sandwich of impact resistant material
US8859035B1 (en) 2009-12-15 2014-10-14 SDCmaterials, Inc. Powder treatment for enhanced flowability
US8803025B2 (en) * 2009-12-15 2014-08-12 SDCmaterials, Inc. Non-plugging D.C. plasma gun
US20110143916A1 (en) * 2009-12-15 2011-06-16 SDCmaterials, Inc. Catalyst production method and system
US9308524B2 (en) 2009-12-15 2016-04-12 SDCmaterials, Inc. Advanced catalysts for automotive applications
US9332636B2 (en) 2009-12-15 2016-05-03 SDCmaterials, Inc. Sandwich of impact resistant material
US20110143930A1 (en) * 2009-12-15 2011-06-16 SDCmaterials, Inc. Tunable size of nano-active material on nano-support
US20110143041A1 (en) * 2009-12-15 2011-06-16 SDCmaterials, Inc. Non-plugging d.c. plasma gun
US9533289B2 (en) 2009-12-15 2017-01-03 SDCmaterials, Inc. Advanced catalysts for automotive applications
US20110143933A1 (en) * 2009-12-15 2011-06-16 SDCmaterials, Inc. Advanced catalysts for automotive applications
US9216406B2 (en) 2011-02-23 2015-12-22 SDCmaterials, Inc. Wet chemical and plasma methods of forming stable PtPd catalysts
US9433938B2 (en) 2011-02-23 2016-09-06 SDCmaterials, Inc. Wet chemical and plasma methods of forming stable PTPD catalysts
US9498751B2 (en) 2011-08-19 2016-11-22 SDCmaterials, Inc. Coated substrates for use in catalysis and catalytic converters and methods of coating substrates with washcoat compositions
US8969237B2 (en) 2011-08-19 2015-03-03 SDCmaterials, Inc. Coated substrates for use in catalysis and catalytic converters and methods of coating substrates with washcoat compositions
US9511352B2 (en) 2012-11-21 2016-12-06 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9156025B2 (en) 2012-11-21 2015-10-13 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9533299B2 (en) 2012-11-21 2017-01-03 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9586179B2 (en) 2013-07-25 2017-03-07 SDCmaterials, Inc. Washcoats and coated substrates for catalytic converters and methods of making and using same
US9427732B2 (en) 2013-10-22 2016-08-30 SDCmaterials, Inc. Catalyst design for heavy-duty diesel combustion engines
US9566568B2 (en) 2013-10-22 2017-02-14 SDCmaterials, Inc. Catalyst design for heavy-duty diesel combustion engines
US9950316B2 (en) 2013-10-22 2018-04-24 Umicore Ag & Co. Kg Catalyst design for heavy-duty diesel combustion engines
US9517448B2 (en) 2013-10-22 2016-12-13 SDCmaterials, Inc. Compositions of lean NOx trap (LNT) systems and methods of making and using same
US9687811B2 (en) 2014-03-21 2017-06-27 SDCmaterials, Inc. Compositions for passive NOx adsorption (PNA) systems and methods of making and using same
US10086356B2 (en) 2014-03-21 2018-10-02 Umicore Ag & Co. Kg Compositions for passive NOx adsorption (PNA) systems and methods of making and using same

Also Published As

Publication number Publication date
GB969746A (en) 1964-09-16
NL295849A (en) 1900-01-01
LU44018A1 (en) 1963-09-06
BE634714A (en) 1900-01-01
ES289618A1 (en) 1963-11-01
FR1336870A (en) 1963-09-06
DE1261789B (en) 1968-02-22

Similar Documents

Publication Publication Date Title
US3408007A (en) Apparatus for atomizing highly viscous materials
US3685740A (en) Rocket burner with flame pattern control
US3004137A (en) Method and apparatus for the production of high gas temperatures
US3567898A (en) Plasma arc cutting torch
US3246114A (en) Process for plasma flame formation
US3077108A (en) Supersonic hot gas stream generating apparatus and method
US3294953A (en) Plasma torch electrode and assembly
US5170033A (en) Swirl ring and flow control process for a plasma arc torch
US2858411A (en) Arc torch and process
US2922869A (en) Plasma stream apparatus and methods
JP4081129B2 (en) Combustion method and combustion containing the separated injection fuel and oxidant streams
US5733662A (en) Method for depositing a coating onto a substrate by means of thermal spraying and an apparatus for carrying out said method
GB1125806A (en) Plasma guns
US3770935A (en) Plasma jet generator
US4311897A (en) Plasma arc torch and nozzle assembly
US3534388A (en) Plasma jet cutting process
US4841114A (en) High-velocity controlled-temperature plasma spray method and apparatus
GB951850A (en) Plasma flame generator
US20060102606A1 (en) Plasma arc torch having an electrode with internal passages
GB1284454A (en) Corpuscular beam in the atmosphere
US2911035A (en) Polymix gas burner
US3131288A (en) Electric arc torch
US3224679A (en) Combustion device for hydrocarbon fuel
US4341941A (en) Method of operating a plasma generating apparatus
US3075065A (en) Hyperthermal tunnel apparatus and electrical plasma-jet torch incorporated therein