EP1075167A2 - Plasma spray device - Google Patents

Plasma spray device Download PDF

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Publication number
EP1075167A2
EP1075167A2 EP00810085A EP00810085A EP1075167A2 EP 1075167 A2 EP1075167 A2 EP 1075167A2 EP 00810085 A EP00810085 A EP 00810085A EP 00810085 A EP00810085 A EP 00810085A EP 1075167 A2 EP1075167 A2 EP 1075167A2
Authority
EP
European Patent Office
Prior art keywords
burner head
spraying device
plasma spraying
base body
anode
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.)
Withdrawn
Application number
EP00810085A
Other languages
German (de)
French (fr)
Other versions
EP1075167A3 (en
Inventor
Markus Müller
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.)
Oerlikon Metco AG
Original Assignee
Sulzer Metco AG
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 Sulzer Metco AG filed Critical Sulzer Metco AG
Publication of EP1075167A2 publication Critical patent/EP1075167A2/en
Publication of EP1075167A3 publication Critical patent/EP1075167A3/en
Withdrawn legal-status Critical Current

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    • 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
    • H05H1/3457—Nozzle protection devices
    • 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
    • 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

Definitions

  • the invention relates to a trained according to the preamble of claim 1 Plasma spraying device.
  • plasma spraying device is used here as in general Case to understand a coating device provided with a plasmatron, in which the coating material is supplied to the plasma jet in powder form. This coating material is melted in the plasma jet and as a homogeneous Layer applied to the substrate.
  • the coating powder is exposed to the plasma jet from the side, i.e. radially, fed.
  • the described problem can be remedied by the listed characteristics, by preventing it in particular in the area between the powder feed channel and the outlet nozzle comes to accumulate powder.
  • Preferred embodiments of the plasma spraying device are in the dependent ones Claims 2 to 9 circumscribed.
  • FIG. 1 shows a schematic side view of a conventional burner head 1. From this illustration are an anode base body 2, a cathode base body 4 and an interposed insulating body 3, which the anode base body 2 electrically isolated from the cathode base 4.
  • the anode base body 2 has an anode nozzle 6 and the cathode base body 4 provided with a cathode 7, both the anode nozzle 6 and the cathode 7 are inserted transversely to the longitudinal center axis L2 of the burner head 1, so that a generated plasma jet 10 radially emerges from the burner head 1.
  • Either the anode base body 2 and the cathode base body 4 are made of one electrical well conductive material such as brass.
  • the Anode nozzle 6 electrically with the anode base body 2 and the cathode 7 electrically connected to the cathode base body 4.
  • the supply of the coating powder takes place via a tube 9, which is arranged on the outside of the burner head 1 is.
  • this tube 9 runs transversely to the longitudinal center axis L1 of the outlet nozzle 6, the coating material to the indicated plasma jet 10 fed essentially radially.
  • the burner head 1 is very compact, whereby the plasma spraying device shown is particularly suitable for coating of bore and pipe walls. On the rest, for feeding the channels required for the operating and cooling media are not described in detail received.
  • FIG. 2 shows a schematic side view of the burner head according to the invention 1
  • Fig. 3 is a plan view of the burner head 1
  • Fig. 4 is a Front view of the burner head 1 shows.
  • the design is based on these three figures of the burner head 1 explained in more detail, the same parts with the same reference numerals are provided as in Fig. 1.
  • the burner head 1 shown in the Anode base body 2 has a gas supply channel 12 (FIG. 2) which is essentially in a conical recess 13 opens. That for the supply of the Pipe 9 provided for coating powder is fixed to a support element 14, which with a between the recess 13 and the powder feed pipe 9th extending cavity 15 is provided.
  • This cavity 15 can over the channel 12 are flooded with a gas, as is indicated in Fig. 2.
  • This gas 16 emerges from the cavity on the side facing the plasma jet 10 15 and thus prevents it from being in the aerodynamically critical area between the trailing edge of the anode nozzle 6 and the mouth of the powder feed tube 9 Powder buildup is coming.
  • FIG. 5 shows a top view of the anode base body
  • FIG. 6 shows a longitudinal section through the anode base body. From these two figures, in particular Design of the anode nozzle 6 and the shape of the recess 13.
  • both a reactive and an inert gas can also be supplied via the channel 12. Most of the time it is sufficient if about 10 to 20 liters of gas are added per minute.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electromagnetism (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Plasma Technology (AREA)
  • Nozzles (AREA)

Abstract

The spray coating device has a burner head (1) provided with a discharge jet for the plasma beam (10), acting as an anode and supplied with the coating powder via a feed channel (9) which is radial to the longitudinal axis of the discharge jet. The burner head has at least one gas exit opening (12a) supplied with a gas for preventing deposition of particles of the spray coating material in the vicinity of the discharge jet.

Description

Die Erfindung betrifft eine gemäss dem Oberbegriff des Anspruchs 1 ausgebildete Plasmaspritzvorrichtung.The invention relates to a trained according to the preamble of claim 1 Plasma spraying device.

Unter dem Begriff Plasmaspritzvorrichtung ist im vorliegenden wie im allgemeinen Fall eine mit einem Plasmatron versehene Beschichtungsvorrichtung zu verstehen, bei der das Beschichtungsmaterial dem Plasmastrahl in Pulverform zugeführt wird. Dieses Beschichtungsmaterial wird im Plasmastrahl aufgeschmolzen und als homogene Schicht auf das Substrat aufgetragen.The term plasma spraying device is used here as in general Case to understand a coating device provided with a plasmatron, in which the coating material is supplied to the plasma jet in powder form. This coating material is melted in the plasma jet and as a homogeneous Layer applied to the substrate.

Bei den heutzutage überwiegend zum Einsatz kommenden Plasmaspritzvorrichtungen wird das Beschichtungspulver dem Plasmastrahl von der Seite her, also radial, zugeführt.In the plasma spraying devices that are predominantly used today the coating powder is exposed to the plasma jet from the side, i.e. radially, fed.

Untersuchungen der mit solchen Plasmaspritzvorrichtungen beschichteten Substraten haben ergeben, dass es in den aufgetragenen Schichten immer wieder zu Inhomogenitäten in Form von klumpenartigen, nicht vollständig aufgeschmolzenen Pulvereinschlüssen kommt. Eine Ursache für diese Pulvereinschlüsse dürfte darin liegen, dass es am Brennerkopf im Bereich der als Anode geschalteten Auslassdüse zu Ansammlungen von Pulverpartikeln (Pulverstaub) kommt, welche Pulveransammlungen von Zeit zu Zeit vom Plasmastrahl mitgerissen werden. Sofern die vom Plasmastrahl mitgerissenen Pulveransammlungen eine bestimmte Mindestgrösse überschreiten, so ist es möglich, dass deren Verweilzeit im Plasmastrahl zu kurz ist, damit die ganze Pulvermasse vollständig aufgeschmolzen wird.Investigations of the substrates coated with such plasma spraying devices have shown that there are always inhomogeneities in the applied layers in the form of lump-like, not completely melted powder inclusions is coming. One reason for these powder inclusions is likely that it is on the burner head in the area of the outlet nozzle connected as anode Accumulations of powder particles (powder dust) comes, which accumulates powder be swept away from time to time by the plasma jet. If the plasma jet entrained powder collections exceed a certain minimum size, so it is possible that their dwell time in the plasma jet is too short the entire powder mass is melted completely.

Insbesondere zwei Gründe dürften ursächlich für solche Pulveransammlungen verantwortlich sein: Zum einen durch besondere aerodynamische Gegebenheiten -Wirbelbildung- am Brennerkopf im Bereich zwischen der Mündung des Pulverzufuhrkanals und der Auslassdüse und zum anderen durch statische Ladungen des Beschichtungspulvers.In particular, two reasons are likely to be responsible for such powder accumulations be: On the one hand due to special aerodynamic conditions - vortex formation- on the burner head in the area between the mouth of the powder feed channel and the outlet nozzle and on the other hand by static charges of the coating powder.

Es ist daher die Aufgabe der Erfindung, eine gemäss dem Oberbegriff des Anspruchs 1 ausgestaltete Plasmaspritzvorrichtung derart weiterzubilden, dass die auf das Substrat aufgetragene Spritzschicht eine höhere Qualität aufweist, indem insbesondere vermieden wird, dass es zu klumpenartigen Pulvereinschlüssen kommt. It is therefore the object of the invention, one according to the preamble of the claim 1 designed plasma spray device such that the on the substrate applied spray coating has a higher quality, in particular it is avoided that lump-like powder inclusions occur.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 aufgeführten Merkmale gelöst.This object is achieved by the features listed in the characterizing part of claim 1 solved.

Durch die angeführten Merkmale kann dem geschilderten Problem abgeholfen werden, indem verhindert wird, dass es insbesondere im Bereich zwischen dem Pulverzufuhrkanal und der Auslassdüse zu Pulveransammlungen kommt.The described problem can be remedied by the listed characteristics, by preventing it in particular in the area between the powder feed channel and the outlet nozzle comes to accumulate powder.

Bevorzugte Ausführungsformen der Plasmaspritzvorrichtung sind in den abhängigen Ansprüchen 2 bis 9 umschrieben.Preferred embodiments of the plasma spraying device are in the dependent ones Claims 2 to 9 circumscribed.

Nachfolgend wird ein bevorzugtes Ausführungsbeispiel der Erfindung anhand von Zeichnungen näher erläutert. In diesen Zeichnungen zeigt:

Fig. 1
eine schematische Seitenansicht eines herkömmlichen Brennerkopfs;
Fig. 2
eine schematische Seitenansicht des erfindungsgemässen Brennerkopfs;
Fig. 3
eine Draufsicht auf den Brennerkopf;
Fig. 4
eine Frontansicht des Brennerkopfs;
Fig. 5
eine Draufsicht auf den Anodenbasiskörper, und
Fig. 6
einen Längsschnitt durch den Anodenbasiskörper.
A preferred exemplary embodiment of the invention is explained in more detail below with reference to drawings. In these drawings:
Fig. 1
a schematic side view of a conventional burner head;
Fig. 2
a schematic side view of the burner head according to the invention;
Fig. 3
a plan view of the burner head;
Fig. 4
a front view of the burner head;
Fig. 5
a plan view of the anode base body, and
Fig. 6
a longitudinal section through the anode base body.

Die Figur 1 zeigt eine schematische Seitenansicht eines herkömmlichen Brennerkopfs 1. Aus dieser Darstellung sind ein Anodenbasiskörper 2, ein Kathodenbasiskörper 4 und ein dazwischen eingefügter Isolierkörper 3, welcher den Anodenbasiskörper 2 elektrisch gegenüber dem Kathodenbasiskörper 4 isoliert, ersichtlich.FIG. 1 shows a schematic side view of a conventional burner head 1. From this illustration are an anode base body 2, a cathode base body 4 and an interposed insulating body 3, which the anode base body 2 electrically isolated from the cathode base 4.

Der Anodenbasiskörper 2 ist mit einer Anodendüse 6 und der Kathodenbasiskörper 4 mit einer Kathode 7 versehen, wobei sowohl die Anodendüse 6 wie auch die Kathode 7 quer zur Längsmittelachse L2 des Brennerkopfs 1 in diesen eingesetzt sind, so dass ein erzeugter Plasmastrahl 10 radial aus dem Brennerkopf 1 austritt. Sowohl der Anodenbasiskörper 2 wie auch der Kathodenbasiskörper 4 sind aus einem elektrisch gut leitenden Material wie beispielsweise Messing gefertigt. Dabei ist die Anodendüse 6 elektrisch mit dem Anodenbasiskörper 2 und die Kathode 7 elektrisch mit dem Kathodenbasiskörper 4 verbunden. Die Zufuhr des Beschichtungspulvers erfolgt über ein Rohr 9, welches auf der Aussenseite des Brennerkopfs 1 angeordnet ist. Da dieses Rohr 9 quer zur Längsmittelachse L1 der Auslassdüse 6 verläuft, wird das Beschichtungsmaterial dem andeutungsweise eingezeichneten Plasmastrahl 10 im wesentlichen radial zugeführt. Der Brennerkopf 1 ist sehr kompakt ausgebildet, wodurch sich die gezeigte Plasmaspritzvorrichtung insbesondere auch zum Beschichten von Bohrungs- und Rohrwandungen eignet. Auf die übrigen, für die Zufuhr der Betriebs- sowie Kühlmedien notwendigen Kanäle wird im einzelnen nicht näher eingegangen.The anode base body 2 has an anode nozzle 6 and the cathode base body 4 provided with a cathode 7, both the anode nozzle 6 and the cathode 7 are inserted transversely to the longitudinal center axis L2 of the burner head 1, so that a generated plasma jet 10 radially emerges from the burner head 1. Either the anode base body 2 and the cathode base body 4 are made of one electrical well conductive material such as brass. Here is the Anode nozzle 6 electrically with the anode base body 2 and the cathode 7 electrically connected to the cathode base body 4. The supply of the coating powder takes place via a tube 9, which is arranged on the outside of the burner head 1 is. Since this tube 9 runs transversely to the longitudinal center axis L1 of the outlet nozzle 6, the coating material to the indicated plasma jet 10 fed essentially radially. The burner head 1 is very compact, whereby the plasma spraying device shown is particularly suitable for coating of bore and pipe walls. On the rest, for feeding the channels required for the operating and cooling media are not described in detail received.

Fig. 2 zeigt eine schematische Seitenansicht des erfindungsgemässen Brennerkopfs 1, währenddem Fig. 3 eine Draufsicht auf den Brennerkopf 1 und Fig. 4 eine Frontansicht des Brennerkopfs 1 zeigt. Anhand dieser drei Figuren wird die Ausgestaltung des Brennerkopfs 1 näher erläutert, wobei gleiche Teile mit denselben Bezugszeichen wie in der Fig. 1 versehen sind. Beim gezeigten Brennerkopf 1 ist in den Anodenbasiskörper 2 ein Gaszufuhrkanal 12 (Fig. 2) eingelassen, der in eine im wesentlichen kegelförmig gestaltete Ausnehmung 13 mündet. Das für die Zufuhr des Beschichtungspulvers vorgesehene Rohr 9 ist an einem Abstützelement 14 fixiert, welches mit einem sich zwischen der Ausnehmung 13 und dem Pulverzufuhrrohr 9 erstreckenden Hohlraum 15 versehen ist. Dieser Hohlraum 15 kann über den Kanal 12 mit einem Gas geflutet werden, wie dies in Fig. 2 andeutungsweise dargestellt ist. Dieses Gas 16 tritt auf der zum Plasmastrahl 10 gerichteten Seite aus dem Hohlraum 15 aus und verhindert somit, dass es im aerodynamisch kritischen Bereich zwischen der Austrittskante der Anodendüse 6 und der Mündung des Pulverzufuhrrohrs 9 zu Pulveransammlungen kommt.2 shows a schematic side view of the burner head according to the invention 1, while Fig. 3 is a plan view of the burner head 1 and Fig. 4 is a Front view of the burner head 1 shows. The design is based on these three figures of the burner head 1 explained in more detail, the same parts with the same reference numerals are provided as in Fig. 1. In the burner head 1 shown in the Anode base body 2 has a gas supply channel 12 (FIG. 2) which is essentially in a conical recess 13 opens. That for the supply of the Pipe 9 provided for coating powder is fixed to a support element 14, which with a between the recess 13 and the powder feed pipe 9th extending cavity 15 is provided. This cavity 15 can over the channel 12 are flooded with a gas, as is indicated in Fig. 2. This gas 16 emerges from the cavity on the side facing the plasma jet 10 15 and thus prevents it from being in the aerodynamically critical area between the trailing edge of the anode nozzle 6 and the mouth of the powder feed tube 9 Powder buildup is coming.

Fig. 5 zeigt eine Draufsicht auf den Anodenbasiskörper und Fig. 6 einen Längsschnitt durch den Anodenbasiskörper. Aus diesen beiden Figuren geht insbesondere die Ausgestaltung der Anodendüse 6 sowie die Form der Ausnehmung 13 hervor.FIG. 5 shows a top view of the anode base body and FIG. 6 shows a longitudinal section through the anode base body. From these two figures, in particular Design of the anode nozzle 6 and the shape of the recess 13.

Je nach gewünschtem Effekt und Art des Spritzpulvers kann sowohl ein reaktives wie auch ein inertes Gas über den Kanal 12 zugeführt werden. In den allermeisten Fällen genügt es, wenn ca. 10 bis 20 Liter Gas pro Minute zugeführt werden.Depending on the desired effect and type of wettable powder, both a reactive and an inert gas can also be supplied via the channel 12. Most of the time it is sufficient if about 10 to 20 liters of gas are added per minute.

Claims (5)

Plasmaspritzvorrichtung, mit einem mit einer als Anode geschalteten Auslassdüse (6) versehenen Brennerkopf (1), welch letzterer mit einem Pulverzufuhrkanal (9) versehen ist, der im wesentlichen radial zur Längsmittelachse (L1 ) der Auslassdüse (6) verläuft, dadurch gekennzeichnet, dass der Brennerkopf (1) mit zumindest einer Gasaustrittsöffnung (12a) versehen ist, über welche ein Gas (16) derart zuführbar ist, dass Ansammlungen von Beschichtungspulverpartikeln im Bereich der Auslassdüse (6) weitestgehend vermieden werden.Plasma spraying device, with a burner head (1) provided with an outlet nozzle (6) connected as an anode, the latter being provided with a powder feed channel (9) which runs essentially radially to the longitudinal central axis (L1) of the outlet nozzle (6), characterized in that the burner head (1) is provided with at least one gas outlet opening (12a) through which a gas (16) can be fed in such a way that accumulations of coating powder particles in the region of the outlet nozzle (6) are largely avoided. Plasmaspritzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein einen zwischen der zumindest einen Gasaustrittsöffnung (12a) und dem Pulverzufuhrkanal (9) verlaufenden Hohlraum (15) bildendes Abstützelement (14) vorgesehen ist.Plasma spraying device according to claim 1, characterized in that a between the at least one gas outlet opening (12a) and the powder feed channel (9) extending cavity (15) forming support element (14) is provided. Plasmaspritzvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Brennerkopf (1) einen mit der Auslassdüse (6) versehenen Anodenbasiskörper (2), einen mit einer Kathode (7) versehenen Kathodenbasiskörper (4) und einen dazwischen eingefügten Isolierkörper (3) aufweist.Plasma spraying device according to claim 1 or 2, characterized in that the burner head (1) has an anode base body provided with the outlet nozzle (6) (2), a cathode base body (4) provided with a cathode (7) and one in between Insulated body (3) inserted. Plasmaspritzvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Anodenbasiskörper (24) mit einer im wesentlichen kegelförmig ausgebildeten Ausnehmung (13) versehen ist, in welche die zumindest einen Gasaustrittsöffnung (12a) mündet.Plasma spraying device according to claim 3, characterized in that the Anode base body (24) with an essentially conical recess (13) is provided, into which the at least one gas outlet opening (12a) flows. Plasmaspritzvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass ein in die Kegelspitze der Ausnehmung (13) mündender Gaszufuhrkanal 12 vorgesehen ist.Plasma spraying device according to claim 4, characterized in that an in the cone tip of the recess (13) opening gas supply channel 12 is provided is.
EP00810085A 1999-07-28 2000-01-31 Plasma spray device Withdrawn EP1075167A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19935468 1999-07-28
DE19935468A DE19935468A1 (en) 1999-07-28 1999-07-28 Plasma spraying device

Publications (2)

Publication Number Publication Date
EP1075167A2 true EP1075167A2 (en) 2001-02-07
EP1075167A3 EP1075167A3 (en) 2001-12-12

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EP00810085A Withdrawn EP1075167A3 (en) 1999-07-28 2000-01-31 Plasma spray device

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EP (1) EP1075167A3 (en)
JP (1) JP2001052893A (en)
KR (1) KR20010020643A (en)
CA (1) CA2303981A1 (en)
DE (1) DE19935468A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010020643A (en) * 1999-07-28 2001-03-15 제라드 바르베자트; 발렌틴 폭트 Plasma spraying apparatus
WO2006080870A1 (en) * 2005-01-26 2006-08-03 Volvo Aero Corp A thermal spraying method and device
EP1837081A1 (en) 2006-03-23 2007-09-26 United Technologies Corporation Powder port blow-off for thermal spray processes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3543149B2 (en) 2001-09-03 2004-07-14 島津工業有限会社 Torch head for plasma spraying
RU2765851C1 (en) * 2020-11-25 2022-02-03 федеральное государственное автономное образовательное учреждение высшего образования "Казанский (Приволжский) федеральный университет" (ФГАОУ ВО КФУ) Metal spraying apparatus for restoring the wear of a part

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4661682A (en) * 1984-08-17 1987-04-28 Plasmainvent Ag Plasma spray gun for internal coatings
EP0457067A2 (en) * 1990-05-18 1991-11-21 Sulzer Metco (US) Inc. Plasma spray device with external powder feed

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01218772A (en) * 1988-02-27 1989-08-31 Nippon Steel Weld Prod & Eng Co Ltd Plasma powder body cladding torch
DE4022112C2 (en) * 1990-07-11 1996-03-14 Mannesmann Ag Plasma torch for transmitted arc
DE4030541C2 (en) * 1990-09-27 1997-10-02 Dilthey Ulrich Prof Dr Ing Burner for coating base materials with powdered filler materials
US5208448A (en) * 1992-04-03 1993-05-04 Esab Welding Products, Inc. Plasma torch nozzle with improved cooling gas flow
DE4409002A1 (en) * 1994-03-16 1994-09-01 Arnim Wirth Method for applying materials in the form of powders or wires by means of a plasma arc which is not transmitted to the workpiece
JPH10152766A (en) * 1996-11-26 1998-06-09 Mitsubishi Heavy Ind Ltd Plasma spraying torch
DE19935468A1 (en) * 1999-07-28 2001-02-15 Sulzer Metco Ag Wohlen Plasma spraying device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4661682A (en) * 1984-08-17 1987-04-28 Plasmainvent Ag Plasma spray gun for internal coatings
EP0457067A2 (en) * 1990-05-18 1991-11-21 Sulzer Metco (US) Inc. Plasma spray device with external powder feed

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010020643A (en) * 1999-07-28 2001-03-15 제라드 바르베자트; 발렌틴 폭트 Plasma spraying apparatus
WO2006080870A1 (en) * 2005-01-26 2006-08-03 Volvo Aero Corp A thermal spraying method and device
EP1837081A1 (en) 2006-03-23 2007-09-26 United Technologies Corporation Powder port blow-off for thermal spray processes
US7644872B2 (en) 2006-03-23 2010-01-12 United Technologies Corporation Powder port blow-off for thermal spray processes

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Publication number Publication date
KR20010020643A (en) 2001-03-15
CA2303981A1 (en) 2001-01-28
JP2001052893A (en) 2001-02-23
EP1075167A3 (en) 2001-12-12
DE19935468A1 (en) 2001-02-15

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