EP0412355A1 - High velocity flame spray gun - Google Patents

High velocity flame spray gun Download PDF

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Publication number
EP0412355A1
EP0412355A1 EP90114216A EP90114216A EP0412355A1 EP 0412355 A1 EP0412355 A1 EP 0412355A1 EP 90114216 A EP90114216 A EP 90114216A EP 90114216 A EP90114216 A EP 90114216A EP 0412355 A1 EP0412355 A1 EP 0412355A1
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EP
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Prior art keywords
combustion chamber
gas
injector
spray gun
flame spray
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Granted
Application number
EP90114216A
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German (de)
French (fr)
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EP0412355B1 (en
Inventor
Erwin Dieter Hühne
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UTP Schweissmaterial GmbH and Co KG
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UTP Schweissmaterial GmbH and Co KG
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Application filed by UTP Schweissmaterial GmbH and Co KG filed Critical UTP Schweissmaterial GmbH and Co KG
Priority to AT90114216T priority Critical patent/ATE96058T1/en
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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
    • B05B7/16—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
    • B05B7/20—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 by flame or combustion
    • B05B7/201—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 by flame or combustion downstream of the nozzle

Definitions

  • the invention relates to a high-speed flame spray gun with a water-cooled combustion chamber, injector gas mixing block and expansion nozzle, in which the gas and flame-exposed surfaces have an affinity-free top layer for the molten spray additive materials and other combustion residues.
  • High-speed flame spray guns have a gas mixing block with a water-cooled combustion chamber and a downstream expansion nozzle.
  • the advantage over conventional flame spray guns is that the fuel gases z. B. acetylene, propane or hydrogen and / or the combustion gases z. B. burn oxygen or air in the water-cooled combustion chamber, resulting in a very strong gas expansion, with the result that the hot gas jet emerging from the water-cooled expansion nozzle has supersonic speed.
  • the injector gas mixing block, the combustion chamber and the connected expansion nozzle are usually made of copper, the surfaces of which are exposed to gas and flame are smoothed to the maximum.
  • the invention is therefore based on the object of providing a high-speed flame spray gun of the type mentioned at the outset, in which no deposits of spray additives and other combustion residues are formed in the region of the combustion chamber.
  • this object is achieved in that the surfaces exposed to gas and flame have a cover layer which has no affinity for the molten spray additive materials and other combustion residues.
  • FIG. 1 shows, among other things, the expansion nozzle 22, the combustion chamber 2, the injector gas mixing block 18 and the cooling water jacket 23 of a high-speed flame spray gun 1.
  • the spray additive in powder form starting from the feed line 24 through the combustion chamber 2.
  • the filler is placed in a molten or melt-plastic state.
  • oxygen flows through the combustion gas supply 4 into the transverse groove 7 through the bore 8 into a radial groove 9 from where it flows through the fuel gas-filled annular groove 13, which acts as an injector gap, via the injector pressure nozzle bore 10.
  • the fuel gas flows via the feed 3 into the transverse groove 12 and flows from here into the annular space 11, which is connected to the annular groove (injector gap) 13.
  • the injector gap 13 is part of the injector system, consisting of an injector pressure nozzle bore 10, an injector gap 13 and an injector mixing nozzle bore 14.
  • the injector system causes a negative pressure to develop in the injector gap, which in this case draws in the fuel gas (so-called Venturi principle in a simplified version).
  • the combustion gas flows at supersonic speed from at least two injector pressure nozzle bores 10 through the annular groove (injector gap) 13 into the injector mixing nozzle bores 14 and thereby sucks fuel gas from the injector gap 13 into the injector mixing nozzle bores 14, where the mixture between fuel and combustion gas takes place.
  • the mixture then enters the combustion chamber 2. Due to the arrangement of the top layer 21 without affinity for the spray additive and the other combustion residues on the end face 17 of the injector gas mixing block 18, on the combustion chamber wall 16, the combustion chamber floor 19 and on the transition area 20 to the expansion nozzle 22, the spray additive material, like the other combustion residues, cannot be contained therein Store or bake the area.
  • Elements are preferably suitable for the cover layer 21 from group VIII of the periodic system, preferably platinum. Furthermore, some members of subgroup I (Ia), namely gold / silver and ceramic layers, for example oxide and carbide ceramic layers.
  • the cover layer 21, for example gold layer, is preferably applied to the finished component and tested for functionality, for example by galvanic processes or by vapor deposition.
  • the layer thickness is preferably 1 to 5 ⁇ .
  • a high-speed flame spray gun is created, with which by means of the arrangement of a coating layer which has no affinity for spray additive materials and other combustion residues on the gas- and flame-exposed surfaces, a deposition and caking of these substances is avoided and thus prevented, and thus the problem that this deposition of the High-speed flame is entrained and thrown or shot onto the substrate, where it creates defects in the spray layer, is avoided and switched off.

Abstract

The invention relates to a high-velocity flame spray gun with water-cooled combustion chamber (2), injector gas mixing block (18) and expansion nozzle (22), which is characterised in that the surfaces which are acted on by gas and flames have a cover layer 21 which has no affinity with the molten spray additive materials and other combustion residues. <IMAGE>

Description

Die Erfindung betrifft eine Hochgeschwindigkeitsflammspritz­pistole mit wassergekühlter Brennkammer, Injektorgasmisch­block und Expansionsdüse, bei der die gas- und flammenbeaufschlagten Oberflächen eine zu den schmelz­flüssigen Spritzzusatzwerkstoffen und sonstigen Verbrennungs­rückständen affinitätslose Deckschicht aufweisen.The invention relates to a high-speed flame spray gun with a water-cooled combustion chamber, injector gas mixing block and expansion nozzle, in which the gas and flame-exposed surfaces have an affinity-free top layer for the molten spray additive materials and other combustion residues.

Hochgeschwindigkeitsflammspritzpistolen weisen einen Gasmischblock mit wassergekühlter Brennkammer und nachgeschalteter Expansionsdüse auf. Der Vorteil gegenüber konventionellen Flammspritzpistolen besteht darin, daß die Brenngase z. B. Acetylen, Propan oder Wasserstoff und/oder die Verbrennungsgase z. B. Sauerstoff bzw. Luft in der wassergekühlten Brennkammer verbrennen, wobei es zu einer sehr starken Gasexpansion kommt, mit der Folge, daß der aus der wassergekühlten Expansionsdüse austretende Heißgasstrahl Überschallgeschwindigkeit aufweist.High-speed flame spray guns have a gas mixing block with a water-cooled combustion chamber and a downstream expansion nozzle. The advantage over conventional flame spray guns is that the fuel gases z. B. acetylene, propane or hydrogen and / or the combustion gases z. B. burn oxygen or air in the water-cooled combustion chamber, resulting in a very strong gas expansion, with the result that the hot gas jet emerging from the water-cooled expansion nozzle has supersonic speed.

Hierbei durchströmt z. B. pulverförmiger Spritzzusatz­werkstoff die Brennkammer, wobei dieser in einen geschmolzenen oder schmelzplastischen Zustand versetzt wird. Das Gemisch aus Brenn- und Verbrennungsgas strömt ebenfalls in die Brennkammer ein und ist beim Eintritt des draht- oder pulverförmigen Spritzzusatzwerkstoffes bereits gezündet. Hierbei entstehen naturgemäß gewisse technische Probleme derart, daß der Zusatzwerkstoff durch den Druck und die Gasverwirbelung in der Brennkammer nachteiligerweise nicht zentrisch in die gegenüberliegende Expansionsdüsenbohrung eintreten kann. Auf diese Weise werden geschmolzene Spritzzu­satzwerkstoffpartikel an die Brennkammerwandung oder an die Stirnseite des Injektorgasmischblocks geschleudert, wo diese anbacken bzw. ablagern.Here flows through z. B. powdery spray additive, the combustion chamber, which is placed in a molten or melt-plastic state. The mixture of fuel and combustion gas also flows into the combustion chamber and is already ignited when the wire or powdered spray additive enters. Certain technical problems arise naturally in such a way that the filler material cannot disadvantageously enter the opposite expansion nozzle bore centrally due to the pressure and the gas swirl in the combustion chamber. In this way, molten spray additive particles are thrown onto the combustion chamber wall or onto the end face of the injector gas mixing block, where they cake or deposit.

Diese Ablagerungen treten ebenfalls auf dem Brennkammerboden und im Übergangsbereich der Brennkammer zur Expansionsdüsen­bohrung auf.These deposits also occur on the combustion chamber floor and in the transition area of the combustion chamber to the expansion nozzle bore.

Da diese Ablagerungen von Zeit zu Zeit von der Hochge­schwindigkeitsflamme mitgerissen und auf das Substrat geschleudert bzw. aufgeschossen werden, verursachen diese Fehlstellen in der zu erzeugenden Spritzschicht.Since these deposits are entrained from time to time by the high-speed flame and thrown or shot onto the substrate, they cause defects in the spray layer to be produced.

Für bestimmte spezielle Anwendungen, z. B. High-Tech-­Schichten im Flugzeugmotorenbau und Gasturbinenschaufelbau sind die herkömmlichen Verfahrensweisen der Schichtauf­bringung daher nicht immer zufriedenstellend.For certain special applications, e.g. B. High-tech layers in aircraft engine construction and gas turbine blade construction, the conventional methods of layer application are therefore not always satisfactory.

Bei den bekanntten Hochgeschwindigkeitsflammspritzpistolen besteht der Injektorgasmischblock, die Brennkammer und die angeschlossene Expansionsdüse normalerweise aus Kupfer, deren gas- und flammenbeaufschlagten Oberflächen maximal geglättet sind.In the known high-speed flame spray guns, the injector gas mixing block, the combustion chamber and the connected expansion nozzle are usually made of copper, the surfaces of which are exposed to gas and flame are smoothed to the maximum.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Hochgeschwindigkeitsflammspritzpistole der eingangs genannten Gattung zu schaffen, bei der im Bereich der Brennkammer keine Ablagerungen von Spritzzusatzwerkstoffen und sonstigen Verbrennungsrückständen gebildet werden.The invention is therefore based on the object of providing a high-speed flame spray gun of the type mentioned at the outset, in which no deposits of spray additives and other combustion residues are formed in the region of the combustion chamber.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die gas- und flammenbeaufschlagten Oberflächen eine zu den schmelzflüssigen Spritzzusatzwerkstoffen und sonstigen Verbrennungsrückständen affinitätslose Deckschicht aufweisen.According to the invention, this object is achieved in that the surfaces exposed to gas and flame have a cover layer which has no affinity for the molten spray additive materials and other combustion residues.

Besondere Ausführungsformen sind in den Unteransprüchen gekennzeichnet.Particular embodiments are characterized in the subclaims.

Anhand der beigefügten Zeichnung, die ein besonderes Ausführungsbeispiel der Erfindung zeigt, wird diese nun näher erläutert.Based on the accompanying drawing, which shows a particular embodiment of the invention, this will now be explained in more detail.

Die Figur 1 zeigt unter anderem die Expansionsdüse 22, die Brennkammer 2, den Injektorgasmischblock 18 und den Kühlwassermantel 23 einer Hochgeschwindigkeitsflammspritzpistole 1.FIG. 1 shows, among other things, the expansion nozzle 22, the combustion chamber 2, the injector gas mixing block 18 and the cooling water jacket 23 of a high-speed flame spray gun 1.

In dem Aufnahmeelement 25 an das der Injektorgasmischblock 18 und der Kühlwassermantel 23 angeschlossen werden, sind verschiedene Zu- und Abführungsdüsen 26 bis 30 eingelassen, die in entsprechende Zuführungs- und Abführungsleitungen 3 bis 6 und 24 münden.In the receiving element 25 to which the injector gas mixing block 18 and the cooling water jacket 23 are connected, various inlet and outlet nozzles 26 to 30 are let in, which open into corresponding inlet and outlet lines 3 to 6 and 24.

Hierbei durchströmt z. B. der Spritzzusatzwerkstoff in Pulverform ausgehend von der Zuführungsleitung 24 durch die Brennkammer 2. Im Bereich der Brennkammer 2 wird der Zusatzwerkstoff in einen geschmolzenen oder schmelz­plastischen Zustand versetzt. Z. B. Sauerstoff strömt durch die Verbrennungsgaszuführung 4 in die Quernute 7 durch die Bohrung 8 in eine Radialnute 9 von wo aus dieser über die Injektordruckdüsenbohrung 10 durch die brenngasgefüllte Ringnute 13, die als Injektorspalt fungiert. Das Brenngas strömt über die Zuführung 3 in die Quernute 12 und strömt von hier aus in den Ringraum 11, der mit der Ringnute (Injektorspalt) 13 verbunden ist. Der Injektorspalt 13 ist Teil des Injektorsystems, bestehend aus Injektordruckdüsen­bohrung 10, Inkjektorspalt 13 und Injektormischdüsen­bohrungen 14.Here flows through z. B. the spray additive in powder form starting from the feed line 24 through the combustion chamber 2. In the area of the combustion chamber 2, the filler is placed in a molten or melt-plastic state. For example, oxygen flows through the combustion gas supply 4 into the transverse groove 7 through the bore 8 into a radial groove 9 from where it flows through the fuel gas-filled annular groove 13, which acts as an injector gap, via the injector pressure nozzle bore 10. The fuel gas flows via the feed 3 into the transverse groove 12 and flows from here into the annular space 11, which is connected to the annular groove (injector gap) 13. The injector gap 13 is part of the injector system, consisting of an injector pressure nozzle bore 10, an injector gap 13 and an injector mixing nozzle bore 14.

Bekanntlich bewirkt das Injektorsystem, daß im Injektorspalt ein Unterdruck entsteht, der im vorliegende Falle das Brenngas ansaugt (sogenanntes Venturi-Prinzip in vereinfachter Ausführung).As is known, the injector system causes a negative pressure to develop in the injector gap, which in this case draws in the fuel gas (so-called Venturi principle in a simplified version).

Das Verbrennungsgas strömt mit Überschallgeschwindigkeit aus mindestens zwei Injektordruckdüsenbohrungen 10 durch die Ringnut (Injektorspalt) 13 in die Injektormischdüsen­bohrungen 14 und saugt dabei Brenngas aus dem Injektorspalt 13 in die Injektormischdüsenbohrungen 14 mit, wo die Mischung zwischen Brenn- und Verbrennungsgas stattfindet. Danach tritt das Gemisch in die Brennkammer 2 ein. Durch die Anordnung der zu dem Spritzzusatzwerkstoff und den sonstigen Verbrennungsrückständen affinitätslosen Deckschicht 21 auf der Stirnseite 17 des Injektorgasmischblocks 18, auf der Brennkammerwandung 16, dem Brennkammerboden 19 und auf dem Übergangsbereich 20 zur Expansionsdüse 22 kann der Spritz­zusatzwerkstoff, wie auch die sonstigen Verbrennungsrück­stände nicht in diesem Bereich ablagern oder anbacken.The combustion gas flows at supersonic speed from at least two injector pressure nozzle bores 10 through the annular groove (injector gap) 13 into the injector mixing nozzle bores 14 and thereby sucks fuel gas from the injector gap 13 into the injector mixing nozzle bores 14, where the mixture between fuel and combustion gas takes place. The mixture then enters the combustion chamber 2. Due to the arrangement of the top layer 21 without affinity for the spray additive and the other combustion residues on the end face 17 of the injector gas mixing block 18, on the combustion chamber wall 16, the combustion chamber floor 19 and on the transition area 20 to the expansion nozzle 22, the spray additive material, like the other combustion residues, cannot be contained therein Store or bake the area.

Die Probleme des Standes der Technik, die sich dadurch ergeben, daß der in die Brennkammer 2, in der bereits das Gasgemisch gezündet ist, eintretende draht- oder pulver­förmige Spritzzusatzwerkstoff durch den Druck und die Gasverwirbelung in der Brennkammer 2 nicht zentrisch in die gegenüberliegende Expansionsdüsenbohrung 15 eintreten kann, und im Bereich der Brennkammerwandung 16, an der Stirnseite 17 des Injektorgasmischblocks 18, auf den Brennkammerboden 19 oder auf den Übergangsbereich 20 der Brennkammer 2 zur Expansionsdüsenbohrung 15 geschleudert werden und dort anbacken, besteht mit dieser erfindungsgemäßen Anordnung einer zu diesen Stoffen affinitätslosen Deckschicht 21 nicht mehr.The problems of the prior art, which result from the fact that the wire or powdered spray additive entering the combustion chamber 2, in which the gas mixture has already ignited, is not centered in the opposite expansion nozzle bore 15 due to the pressure and the gas swirling in the combustion chamber 2 can occur, and in the area of the combustion chamber wall 16, on the end face 17 of the injector gas mixing block 18, on the combustion chamber floor 19 or on the transition area 20 of the combustion chamber 2 to the expansion nozzle bore 15 and bake there, with this arrangement according to the invention there is a cover layer without affinity for these substances 21 no more.

Vorzugsweise eignen sich Elemente für die Deckschicht 21 aus der Gruppe VIII des periodischen Systems, vorzugsweise Platin. Ferner einige Angehörige der I. Nebengruppe (Ia), nämlich Gold/Silber sowie keramische Schichten, beispielsweise oxidische und karbidische Keramikschichten.Elements are preferably suitable for the cover layer 21 from group VIII of the periodic system, preferably platinum. Furthermore, some members of subgroup I (Ia), namely gold / silver and ceramic layers, for example oxide and carbide ceramic layers.

Es eignen sich ferner Schwermetalloxidschichten, wie z. B. eine Titanoxidschicht.There are also heavy metal oxide layers, such as. B. a titanium oxide layer.

Bevorzugterweise erfolgt die Aufbringung der Deckschicht 21, beispielsweise Goldschicht, am fertig bearbeiteten und auf Funktionsfähigkeit geprüften Bauteil, beispielsweise durch galvanische Verfahren oder durch Aufdampfen.The cover layer 21, for example gold layer, is preferably applied to the finished component and tested for functionality, for example by galvanic processes or by vapor deposition.

Die Schichtdicke beträgt vorzugsweise 1 bis 5µ.The layer thickness is preferably 1 to 5μ.

Ein weiterer positiver Effekt der Anordnung einer Deckschicht 21 aus vorgenannten Materialien ist, daß die Zündwilligkeit des aus der Expansionsdüse austretenden Initialzündgemisches sprunghaft erhöht wird.Another positive effect of the arrangement of a cover layer 21 made of the aforementioned materials is that the ignitability of the initial ignition mixture emerging from the expansion nozzle is suddenly increased.

Mit der vorliegenden Erfindung wird eine Hochgeschwindig­keitsflammspritzpistole geschaffen, mit der durch die Anordnung einer zu Spritzzusatzwerkstoffen und sonstigen Verbrennungsrückständen affinitätslosen Deckschicht auf den gas- und flammenbeaufschlagten Oberflächen eine Ablagerung und ein Anbacken dieser Stoffe vermieden und verhindert wird und somit das Problem, das diese Ablagerung von der Hochgeschwindigkeitsflamme mitgerissen und auf das Substrat geschleudert bzw. aufgeschossen wird, wo sie Fehlstellen in der Spritzschicht erzeugen, vermieden und ausgeschaltet wird.With the present invention, a high-speed flame spray gun is created, with which by means of the arrangement of a coating layer which has no affinity for spray additive materials and other combustion residues on the gas- and flame-exposed surfaces, a deposition and caking of these substances is avoided and thus prevented, and thus the problem that this deposition of the High-speed flame is entrained and thrown or shot onto the substrate, where it creates defects in the spray layer, is avoided and switched off.

BezugszeichenlisteReference symbol list

  • 1 Hochgeschwindigkeitsflammspritzpistole1 high-speed flame spray gun
  • 2 Brennkammer2 combustion chamber
  • 3 Brenngaszuführungsleitung3 fuel gas supply line
  • 4 Verbrennungsgaszuführungsleitung4 combustion gas supply line
  • 5 Kühlwasserzuführungsleitung5 cooling water supply line
  • 6 Kühlwasserabgangsleitung6 cooling water outlet pipe
  • 7 Quernute7 transverse groove
  • 8 Bohrung8 hole
  • 9 Radialnute9 radial grooves
  • 10 Injektordruckdüsenbohrungen10 injector pressure nozzle holes
  • 11 Ringkanal11 ring channel
  • 12 Quernute12 transverse grooves
  • 13 Injektorspalt (Ringnute)13 injector gap (ring groove)
  • 14 Injektormischdüsenbohrungen14 injector mixing nozzle holes
  • 15 Expansionsdüsenbohrung15 expansion nozzle bore
  • 16 Brennkammerwandung16 combustion chamber wall
  • 17 Stirnseite des Gasmischblocks17 face of the gas mixing block
  • 18 Injektorgasmischblock18 injector gas mixing block
  • 19 Brennkammerboden19 combustion chamber floor
  • 20 Übergangsbereich zur Expansionsdüse20 transition area to the expansion nozzle
  • 21 affinitätslose Deckschicht21 affinity-free top layer
  • 22 Expansionsdüse22 expansion nozzle
  • 23 Kühlwassermantel23 cooling water jacket
  • 24 zentrale Zuführungsleitung für Spritzzusatzwerkstoffe24 central feed line for spray filler materials
  • 25 Element zur Aufnahme von 23 und 1825 element to accommodate 23 and 18
  • 26 Kühlwasserabgangsdüse26 Cooling water outlet nozzle
  • 27 Kühlwasserzuführungsdüse27 Cooling water supply nozzle
  • 28 Brenngaszuführungsdüse28 fuel gas supply nozzle
  • 29 Verbrennungsgaszuführungsdüse29 Combustion gas supply nozzle
  • 30 Spritzzusatzwerkstoffzuführungsdüse30 spray additive feed nozzle

Claims (3)

1. Hochgeschwindigkeitsflammspritzpistole mit wasser­gekühlter Brennkammer, Injektorgasmischblock und Expansionsdüse,
dadurch gekennzeichnet,
daß die gas- und flammenbeaufschlagten Oberflächen eine, zu den schmelzflüssigen Spritzzusatzwerkstoffen und sonstigen Verbrennungsrückständen affinitätslose Deckschicht (21) aufweisen.1. high-speed flame spray gun with water-cooled combustion chamber, injector gas mixing block and expansion nozzle,
characterized,
that the surfaces exposed to gas and flame have a covering layer (21) without affinity for the molten spray additives and other combustion residues. 2. Hochgeschwindigkeitsflammspritzpistole nach Anspruch 1,
dadurch gekennzeichnet,
daß die Deckschicht (21) auf der Brennkammerwandung (16), der Stirnseite des Gasmischblocks (17), Brennkammerboden (19) und im Übergangsbereich (20) zur Expansionsdüse (22) angeordnet ist.2. High-speed flame spray gun according to claim 1,
characterized,
that the cover layer (21) on the combustion chamber wall (16), the end face of the gas mixing block (17), the combustion chamber base (19) and in the transition region (20) to the expansion nozzle (22) is arranged. 3. Hochgeschwindigkeitsflammspritzpistole nach Anspruch 1,
dadurch gekennzeichnet,
daß mindestens ein Teil der gas- und flammenbeauf­schlagten Wandung beschichtet ist.3. High-speed flame spray gun according to claim 1,
characterized,
that at least part of the gas and flame-exposed wall is coated.
EP90114216A 1989-08-08 1990-07-25 High velocity flame spray gun Revoked EP0412355B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90114216T ATE96058T1 (en) 1989-08-08 1990-07-25 HIGH VELOCITY FLAME SPRAY GUN.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8909503U DE8909503U1 (en) 1989-08-08 1989-08-08
DE8909503U 1989-08-08

Publications (2)

Publication Number Publication Date
EP0412355A1 true EP0412355A1 (en) 1991-02-13
EP0412355B1 EP0412355B1 (en) 1993-10-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114216A Revoked EP0412355B1 (en) 1989-08-08 1990-07-25 High velocity flame spray gun

Country Status (5)

Country Link
US (1) US5165705A (en)
EP (1) EP0412355B1 (en)
AT (1) ATE96058T1 (en)
DE (2) DE8909503U1 (en)
ES (1) ES2046614T3 (en)

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US5531590A (en) * 1995-03-30 1996-07-02 Draco Shock-stabilized supersonic flame-jet method and apparatus
US5932293A (en) * 1996-03-29 1999-08-03 Metalspray U.S.A., Inc. Thermal spray systems
US6042019A (en) * 1996-05-17 2000-03-28 Sulzer Metco (Us) Inc. Thermal spray gun with inner passage liner and component for such gun
US5834066A (en) * 1996-07-17 1998-11-10 Huhne & Kunzli GmbH Oberflachentechnik Spraying material feeding means for flame spraying burner
DE102014205343A1 (en) * 2014-03-21 2015-09-24 Siemens Aktiengesellschaft Cooling device for a spray nozzle or spray nozzle arrangement with a cooling device for thermal spraying
DE102016114533A1 (en) 2016-08-05 2018-02-08 Flowserve Flow Control Gmbh Iron-based alloy for the production of thermally sprayed wear-resistant coatings
CN112126887B (en) * 2020-09-14 2022-07-08 水利部杭州机械设计研究所 Air-gas type supersonic flame spray gun, spraying device and method for preparing metal ceramic coating

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Also Published As

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ES2046614T3 (en) 1994-02-01
DE8909503U1 (en) 1989-09-28
ATE96058T1 (en) 1993-11-15
EP0412355B1 (en) 1993-10-20
DE59003131D1 (en) 1993-11-25
US5165705A (en) 1992-11-24

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