US3912235A - Multiblend powder mixing apparatus - Google Patents

Multiblend powder mixing apparatus Download PDF

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US3912235A
US3912235A US534339A US53433974A US3912235A US 3912235 A US3912235 A US 3912235A US 534339 A US534339 A US 534339A US 53433974 A US53433974 A US 53433974A US 3912235 A US3912235 A US 3912235A
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gas
powder
mixing
valve
remotely
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US534339A
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Kenneth T Janssen
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Raytheon Technologies Corp
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United Technologies Corp
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    • 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
    • B05B7/14—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 designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1418—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/003—Methods or devices for colour determination, selection or synthesis, e.g. use of colour tables
    • 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
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • 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, liquid

Definitions

  • the present invention relates to powder blending apparatus particularly for use with thermal spray equipment.
  • thermal spray techniques will be understood to make reference to either flame or plasma spray procedures.
  • coatings which are a blend of two or more distinct components.
  • the characteristics of such components may be such that simple preblending in a single hopper is notfeasible, perhaps due to reactivity problems or difficulties in maintaining a uniform blend because of density or particle size differences.
  • the present invention relates to powder blending apparatus wherein two or more powders of distinct composition are blended and delivered in a common manifold to thermal spray equipment.
  • powders from separate sources may be delivered into the system in any given ratio or sequence either at a constant rate or at a changing rate.
  • FIG. 1 is a somewhat schematic representation of a preferred embodiment of the present invention.
  • FIG. 2 shows the powder manifold in greater detail.
  • a blended powder mixture typically carried by The principal motive power for the flow of powders from the respective feeders through the manifold to the gun, is provided by a high pressure gas flow.
  • a source of high pressure argon (not shown) is utilized to charge a high pressure gas line 24 through shutoff valve 26.
  • Four separate gas lines are tapped off line 24, specifically lines 30, 32, 34 and 36.
  • Gas line 30 normally feeds inert gas through a pressure regulator 40, flow meter 42, and normally open solenoid 44 through line 13 to manifold 14 to the gun 22, such as a plasma gun.
  • the gas lines 32, 34, and 36 which are also tapped off argon feeder line 24 provide a flow of gas through pressure regulators 50, 52 and 54, solenoid valves 56, 58 and 60, and flowmeters 62, 64 and 66.
  • the flow of gas into the respective feeders entrains powders therein, dependent upon the rate of gas flow and therefrom to the gun as previously described.
  • the three powder feeders 2, 4 and 6 were Mark IX Powder Feeders made by Sylvester & Co., Cleveland, Oh.
  • the four pressure regulators 40, 50, 52 and 54 were 0-160 p.s.i. regulators obtained from Nordson Corp., Amherst, Oh.
  • the flowmeters 42, 62, 64 and 66 were all identical and had a capacity of 030 cubic feet per hour.
  • the cyclone mixer was procured from Sylvester and Co., and the spray gun 22 was a Plasmadyne 1068 Minigun.
  • the powder manifold 14 is shown in greater detail in FIG. 2.
  • the manifold was provided with a central passageway 70 into which four subpassageways 72, 74, 76 and 78 extend at an angle of about 45.
  • Four check valves 80, 82, 84 and 86 such as Parker Model VCL4P1, are connected to the subpassageways by four nipples 90, 92, 94 and 96. Flow through one or more of the subpassageways carrying inert gas and entrained powders from the respective powder feeders enters the central passageway and the gases and mixed powders exit the manifold through line 16.
  • the above described apparatus is capable of operation in various degrees of sophistication depending upon the desires of the user.
  • all of the pressure regulators 40, 50, 52 and 54 are preset to provide desired levels of gas flow through regulators 42, 62, 64 and 66 which in turn regulate the powder amounts fed from the feeders 2, 4 and 6 into the manifold 14 and ultimately to the gun.
  • Argon flow is established through the line 30 and normally open solenoid 44 and thence into the gun 22 without powder entrainment.
  • a powder feed is then initiated closing solenoid 44 and opening one or more of the solenoids 56,
  • solenoids 56, 58 and 60 may be all opened simultaneously or sequentially.
  • Solenoid 56 may be programmed to open first, solenoids 58 and'60 remaining closed.
  • Solenoid 58 may then be opened while solenoid 56 is closed, solenoid 60 remaining closed. The sequence may be further repeated with respect to the closing of solenoid 58 and the opening of solenoid 60.
  • solenoid phase in/phase out operation may be timed such that with solenoid 56 open and all others closed, solenoid 58 may be opened before solenoid 56 closes, providing powders from feeder 2 alone at first, then a mixture of powders from feeders 2 and 4, before solenoid 56 closes, at which time only powders from feeder 4 are provided.
  • solenoid phase in/phase out operation may be timed such that with solenoid 56 open and all others closed, solenoid 58 may be opened before solenoid 56 closes, providing powders from feeder 2 alone at first, then a mixture of powders from feeders 2 and 4, before solenoid 56 closes, at which time only powders from feeder 4 are provided.
  • the same or different sequencing may be accomplished with the powders in feeders 4 and 6.
  • the gas flows through the lines 32, 34 and 36 can also be varied during the time gas is flowing therethrough by variation of the settings of the regulators 50, 52 and 54.
  • the pressure admitted through regulator 50 may gradually be increased or decreased by opening or closing regulator 50. This may be automatically programmed or may be a simple mechanical adjustment by the operator.
  • a blend of powders is provided to the gun 22 through a single manifold, permitting the use of a single feed gun.
  • valve sequencing is programmed for the operator he, therefore, need be concerned only with the application of the desired coating thickness, since composition of the coating is automatically controlled by the powder blending apparatus.
  • Powders admitted through various ports into the manifold 14 are prevented from backing into other ports by the check valves 80, 82, 84 and 86.
  • feeders 2, 4 and 6 may be cleaned and reused with the appropriate powders fed thereinto or, of course, substitute containers may be utilized.
  • a gas purge may be utilized to clear the lines of the old powders and substitute feeders can be brought into the system by simply breakprises:
  • a pluralityof powder feeders each including means for storing powders, a gas inlet, and an outlet for discharging gas and entrained powders therefrom;
  • a powder mixing manifold having a mixing chamber therein, a plurality of inlets to the mixing chamber, and an outlet from the mixing chamber;
  • entrained powder transmission means interconnecting, for each powder feeder, a powder feeder outlet and a mixing manifold inlet;
  • gun supply means for connecting the outlet of the mixing manifold to powder spraying apparatus
  • independent gas means for providing a regulated flow of gas from the gas source through the gun supply means, bypassing the powder feeders.
  • the regulating means for controlling as flow includes a pressure regulator and a remotely-operable on/- off valve.
  • the regulating means also includes a flowmeter.
  • the independent gas means is connected between the gas source and an inlet to the powder mixing manifold.
  • the independent gas means includes a pressure regulator and a remotely-operable on/off valve.
  • the remotely-operable valve is a normally-open solenoid valve.
  • the remotely-operable valve in the regulating means is a normally-closed solenoid valve.
  • an additional gas/entrained powder mixing means is installed in the gun supply means.

Abstract

Apparatus for delivering two or more metallic, ceramic or plastic powders, at any given ratio, through a common manifold to thermal spray equipment permits the production of multiblend or graded coatings.

Description

United States Patent 1191 Janssen Oct. 14, 1975 [5 MULTIBLEND POWDER MIXING 3,361,412 l/l968 Cole 259 4 APPARATUS 3,424,439 l/l969 Baker 259/4 3,462,130 8/1969 J0achim.... 259/4 [75] Inventor: .K nneth T. Janss n, Br k, 3,478,963 ll/l969 Winn 259 5 C011. 3,554,7l4 l/l97l JOhnSOn.... 259/4 3,593,735 7/1971 Reiher 259/4 [73] Asslgneel g Corpwatm, 3,623,704 11/1971 SkObel 259/4 a or onn.
[22] Filed: 1974 Primary ExaminerRobert W. Jenkins [21] A NO 1 534,339 Attorney, Agent, or Firm-Richard N. James [52] US. Cl 259/4; 259/7 511 lm. c1. B01F 15/02 [57] ABSIRACT [58] new of 259/4 Apparatus for delivering two or more metallic, ce-
259/18 ramic or plastic powders, at any given ratio, through a 61; 222/3; 23/252 R common manifold to thermal spray equipment permits [56] R f Cted the production of multiblend 0r graded coatings.
e erences 1 UNITED STATES PATENTS 8 Claims, 2 Drawing Figures 3,236,419 2/l966 Rerner 259/7 g 62 M /Z E E E E Z W 30 7% V .Z A V\ I, rm 16 7 2% 7 W /Z a i U.S. Patent Oct.14,1975 SheetlofZ 3,912,235
US. Patent Oct. 14, 1975 Sheet 2 of 2 &
MULTIBLEND POWDER MIXING APPARATUS BACKGROUND OF THE INVENTION The present invention relates to powder blending apparatus particularly for use with thermal spray equipment. As used herein, thermal spray techniques will be understood to make reference to either flame or plasma spray procedures.
In the generation of coatings by thermal spray techniques it is frequently desirable to provide coatings which are a blend of two or more distinct components. The characteristics of such components may be such that simple preblending in a single hopper is notfeasible, perhaps due to reactivity problems or difficulties in maintaining a uniform blend because of density or particle size differences. Furthermore, it is frequently desirable to provide a coating wherein the composition varies as a function of coating thickness. For example, it is known that ceramic coatings applied directly to metallic substrates often are unduly shocksensitive because of relative differences in thermal expansion between the metal substrates and the ceramic coatings.
In such instances it is desirable to provide a coating which varies, as a function of coating thickness, from metal adjacent the substrate to ceramic at its outer surface. For the above reasons and others, the use of a single source of premixed powder frequently is unsatisfactory in the generation of coatings by thermal spray techniques.
For the development of graded coatings, one alternative involves the use of multiple spraying guns, one gun being phased out while another or others are gradually phased in. Such a technique is disclosed in the US. Pat. No. 3,545,944 to Emmanuelson et al, of common assignee herewith. Such a technique, of course, involves multiple spraying guns.
Another alternative is the technique disclosed in Winzeler et al, US. Pat. No. 3,378,391 wherein multiple feed'lines from separate powder sources are fed into a spray gun of special design and mixed therein.
SUMMARY OF THE INVENTION The present invention relates to powder blending apparatus wherein two or more powders of distinct composition are blended and delivered in a common manifold to thermal spray equipment. In this apparatus powders from separate sources may be delivered into the system in any given ratio or sequence either at a constant rate or at a changing rate.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a somewhat schematic representation of a preferred embodiment of the present invention.
FIG. 2 shows the powder manifold in greater detail.
DESCRIPTION OF THE PREFERRED EMBODIMENTS occurs. A blended powder mixture, typically carried by The principal motive power for the flow of powders from the respective feeders through the manifold to the gun, is provided by a high pressure gas flow. In the drawing, a source of high pressure argon (not shown) is utilized to charge a high pressure gas line 24 through shutoff valve 26. Four separate gas lines are tapped off line 24, specifically lines 30, 32, 34 and 36.
Gas line 30 normally feeds inert gas through a pressure regulator 40, flow meter 42, and normally open solenoid 44 through line 13 to manifold 14 to the gun 22, such as a plasma gun.
The gas lines 32, 34, and 36, which are also tapped off argon feeder line 24 provide a flow of gas through pressure regulators 50, 52 and 54, solenoid valves 56, 58 and 60, and flowmeters 62, 64 and 66. The flow of gas into the respective feeders entrains powders therein, dependent upon the rate of gas flow and therefrom to the gun as previously described.
In the equipment actually constructed, the three powder feeders 2, 4 and 6 were Mark IX Powder Feeders made by Sylvester & Co., Cleveland, Oh. The four pressure regulators 40, 50, 52 and 54 were 0-160 p.s.i. regulators obtained from Nordson Corp., Amherst, Oh. The flowmeters 42, 62, 64 and 66 were all identical and had a capacity of 030 cubic feet per hour. The cyclone mixer was procured from Sylvester and Co., and the spray gun 22 was a Plasmadyne 1068 Minigun.
The powder manifold 14 is shown in greater detail in FIG. 2. The manifold was provided with a central passageway 70 into which four subpassageways 72, 74, 76 and 78 extend at an angle of about 45. Four check valves 80, 82, 84 and 86, such as Parker Model VCL4P1, are connected to the subpassageways by four nipples 90, 92, 94 and 96. Flow through one or more of the subpassageways carrying inert gas and entrained powders from the respective powder feeders enters the central passageway and the gases and mixed powders exit the manifold through line 16.
The above described apparatus is capable of operation in various degrees of sophistication depending upon the desires of the user. In one mode of operation, all of the pressure regulators 40, 50, 52 and 54 are preset to provide desired levels of gas flow through regulators 42, 62, 64 and 66 which in turn regulate the powder amounts fed from the feeders 2, 4 and 6 into the manifold 14 and ultimately to the gun. Argon flow is established through the line 30 and normally open solenoid 44 and thence into the gun 22 without powder entrainment. A powder feed is then initiated closing solenoid 44 and opening one or more of the solenoids 56,
58 and 60. The solenoids 56, 58 and 60 may be all opened simultaneously or sequentially. Solenoid 56 may be programmed to open first, solenoids 58 and'60 remaining closed. Solenoid 58 may then be opened while solenoid 56 is closed, solenoid 60 remaining closed. The sequence may be further repeated with respect to the closing of solenoid 58 and the opening of solenoid 60.
In a further variation the solenoid phase in/phase out operation may be timed such that with solenoid 56 open and all others closed, solenoid 58 may be opened before solenoid 56 closes, providing powders from feeder 2 alone at first, then a mixture of powders from feeders 2 and 4, before solenoid 56 closes, at which time only powders from feeder 4 are provided. The same or different sequencing may be accomplished with the powders in feeders 4 and 6.
In another degree of refinement, the gas flows through the lines 32, 34 and 36 can also be varied during the time gas is flowing therethrough by variation of the settings of the regulators 50, 52 and 54. For example, when solenoid 44 is closed and solenoid 56 is opened, the pressure admitted through regulator 50 may gradually be increased or decreased by opening or closing regulator 50. This may be automatically programmed or may be a simple mechanical adjustment by the operator.
Whatever the sequencing employed in the system or degree of sophistication provided, a blend of powders is provided to the gun 22 through a single manifold, permitting the use of a single feed gun. When the valve sequencing is programmed for the operator he, therefore, need be concerned only with the application of the desired coating thickness, since composition of the coating is automatically controlled by the powder blending apparatus.
Powders admitted through various ports into the manifold 14 are prevented from backing into other ports by the check valves 80, 82, 84 and 86. When switching from one coating system to another, feeders 2, 4 and 6 may be cleaned and reused with the appropriate powders fed thereinto or, of course, substitute containers may be utilized. A gas purge may be utilized to clear the lines of the old powders and substitute feeders can be brought into the system by simply breakprises:
a pluralityof powder feeders each including means for storing powders, a gas inlet, and an outlet for discharging gas and entrained powders therefrom;
means for connecting the individual powder feeder gas inlets to a source of pressurized gas;
regulating means for controlling the gas flow through each connecting means; 1
a powder mixing manifold having a mixing chamber therein, a plurality of inlets to the mixing chamber, and an outlet from the mixing chamber;
entrained powder transmission means interconnecting, for each powder feeder, a powder feeder outlet and a mixing manifold inlet;
gun supply means for connecting the outlet of the mixing manifold to powder spraying apparatus; and
independent gas means for providing a regulated flow of gas from the gas source through the gun supply means, bypassing the powder feeders.
2. Apparatus according to claim 1 wherein:
the regulating means for controlling as flow includes a pressure regulator and a remotely-operable on/- off valve.
3. Apparatus according to claim 2 wherein:
the regulating means also includes a flowmeter.
4. Apparatus according to claim 2 wherein:
the independent gas means is connected between the gas source and an inlet to the powder mixing manifold.
5. Apparatus according to claim 4 wherein:
the independent gas means includes a pressure regulator and a remotely-operable on/off valve.
6. Apparatus according to claim 5 wherein:
the remotely-operable valve is a normally-open solenoid valve.
7. Apparatus according to claim 6 wherein:
the remotely-operable valve in the regulating means is a normally-closed solenoid valve.
8. Apparatus according to claim 1 wherein:
an additional gas/entrained powder mixing means is installed in the gun supply means.

Claims (8)

1. Multiblend powder mixing apparatus which comprises: a plurality of powder feeders each including means for storing powders, a gas inlet, and an outlet for discharging gas and entrained powders therefrom; means for connecting the individual powder feeder gas inlets to a source of pressurized gas; regulating means for controlling the gas flow through each connecting means; a powder mixing manifold having a mixing chamber therein, a plurality of inlets to the mixing chamber, and an outlet from the mixing chamber; entrained powder transmission means interconnecting, for each powder feeder, a powder feeder outlet and a mixing manifold inlet; gun supply means for connecting the outlet of the mixing manifold to powder spraying apparatus; and independent gas means for providing a regulated flow of gas from the gas source through the gun supply means, bypassing the powder feeders.
2. Apparatus according to claim 1 wherein: the regulating means for controlling as flow includes a pressure regulator and a remotely-operable on/off valve.
3. Apparatus according to claim 2 wherein: the regulating means also includes a flowmeter.
4. Apparatus according to claim 2 wherein: the independent gas means is connected between the gas source and an inlet to the powder mixing manifold.
5. Apparatus according to claim 4 wherein: the independent gas means includes a pressure regulator and a remotely-operable on/off valve.
6. Apparatus according to claim 5 wherein: the remotely-operable valve is a normally-open solenoid valve.
7. Apparatus according to claim 6 wherein: the remotely-operable valve in the regulating means is a normally-closed solenoid valve.
8. Apparatus according to claim 1 wherein: an additional gas/entrained powder mixing means is installed in the gun supply means.
US534339A 1974-12-19 1974-12-19 Multiblend powder mixing apparatus Expired - Lifetime US3912235A (en)

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Cited By (23)

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US4101116A (en) * 1975-10-08 1978-07-18 Motan Gesellschaft Mit Beschrankter Haftung Apparatus for mixing granulated and/or pulverous materials
FR2511271A1 (en) * 1981-08-11 1983-02-18 Coal Industry Patents Ltd METHOD AND APPARATUS FOR SPRAYING REFRACTORY MATERIAL INTO A FLAME FOR OVEN REPAIR
EP0229522A2 (en) * 1985-12-28 1987-07-22 National Aerospace Laboratories of Science & Technology Agency A method of producing a functionally gradient material
US4696855A (en) * 1986-04-28 1987-09-29 United Technologies Corporation Multiple port plasma spray apparatus and method for providing sprayed abradable coatings
US4835022A (en) * 1986-07-29 1989-05-30 Utp Schweibmaterial Gmbh & Co. Kg Process and apparatus for coating components
JPH04200665A (en) * 1990-11-29 1992-07-21 Seiko Riken Kk Thermal spraying device
WO1993005194A1 (en) * 1991-09-05 1993-03-18 Technalum Research, Inc. Method for the production of compositionally graded coatings
US5879753A (en) * 1997-12-19 1999-03-09 United Technologies Corporation Thermal spray coating process for rotor blade tips using a rotatable holding fixture
EP1160348A2 (en) * 2000-05-22 2001-12-05 Praxair S.T. Technology, Inc. Process for producing graded coated articles
WO2002009886A1 (en) * 2000-08-02 2002-02-07 Sames Technologies Device for supplying a powdery coating product to a sprayer and spray installation comprising same
JP2002143732A (en) * 2000-11-07 2002-05-21 Asahi Sunac Corp Coating method and coating apparatus
WO2002057023A1 (en) * 2001-01-19 2002-07-25 Eisenmann France Sarl Colour shade changing unit module for painting installation
US20030008167A1 (en) * 2001-05-23 2003-01-09 Michael Loch Process for applying a heat shielding coating system on a metallic substrate
US20050279860A1 (en) * 2004-06-03 2005-12-22 Fulkerson Terrence M Color change for powder coating material application system
US20060219807A1 (en) * 2004-06-03 2006-10-05 Fulkerson Terrence M Color changer for powder coating system with remote activation
US20070095852A1 (en) * 2005-11-03 2007-05-03 Murphy Christopher M Multiple color powder paint application
EP1821584A1 (en) * 2006-02-20 2007-08-22 Snecma Services Method of depositing a thermal barrier by plasma torch
US20070253279A1 (en) * 2003-02-28 2007-11-01 Degussa Ag Homogenisation of Nanoscale Powders
US20100104764A1 (en) * 2005-07-12 2010-04-29 Mohamed Youssef Nazmy Method of forming a ceramic thermal barrier coating
US20110165335A1 (en) * 2004-07-30 2011-07-07 United Technologies Corporation Dispersion strengthened rare earth stabilized zirconia
US8337989B2 (en) 2010-05-17 2012-12-25 United Technologies Corporation Layered thermal barrier coating with blended transition
JP2013237927A (en) * 2012-04-20 2013-11-28 Reinhausen Plasma Gmbh Device and method for marking substrate, and mark
EP2711441A1 (en) * 2012-09-21 2014-03-26 Reinhausen Plasma GmbH Device and method for creating a coating system

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US3478963A (en) * 1967-07-17 1969-11-18 Archilithic Co Dispensing gun for fiber rovings and cementitious materials
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US10058884B2 (en) 2004-06-03 2018-08-28 Nordson Corporation Color change for powder coating material application system
US9067223B2 (en) 2004-06-03 2015-06-30 Nordson Corporation Color change for powder coating material application system
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US7712681B2 (en) 2004-06-03 2010-05-11 Nordson Corporation Color change for powder coating material application system
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US20100104764A1 (en) * 2005-07-12 2010-04-29 Mohamed Youssef Nazmy Method of forming a ceramic thermal barrier coating
US8662410B2 (en) * 2005-11-03 2014-03-04 GM Global Technology Operations LLC Multiple color powder paint application
US20070095852A1 (en) * 2005-11-03 2007-05-03 Murphy Christopher M Multiple color powder paint application
US7763328B2 (en) 2006-02-20 2010-07-27 Snecma Services Method of depositing a thermal barrier by plasma torch
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US8449677B2 (en) 2006-02-20 2013-05-28 Snecma Method of depositing a thermal barrier by plasma torch
US20070196662A1 (en) * 2006-02-20 2007-08-23 Snecma Services Method of depositing a thermal barrier by plasma torch
FR2897748A1 (en) * 2006-02-20 2007-08-24 Snecma Services Sa THERMAL BARRIER DEPOSITION METHOD BY PLASMA TORCH
US8337989B2 (en) 2010-05-17 2012-12-25 United Technologies Corporation Layered thermal barrier coating with blended transition
US8574721B2 (en) 2010-05-17 2013-11-05 United Technologies Corporation Layered thermal barrier coating with blended transition and method of application
JP2013237927A (en) * 2012-04-20 2013-11-28 Reinhausen Plasma Gmbh Device and method for marking substrate, and mark
EP2674223A3 (en) * 2012-04-20 2016-08-24 Maschinenfabrik Reinhausen GmbH Device and method for marking a substrate, as well as a marking therefor
EP2711441A1 (en) * 2012-09-21 2014-03-26 Reinhausen Plasma GmbH Device and method for creating a coating system

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