EP0879645A2 - Procédé de nettoyage du fil utilisé lors de la pulvérisation par arc électrique ainsi que dispositif adapté à la mise en oeuvre dudit procédé - Google Patents

Procédé de nettoyage du fil utilisé lors de la pulvérisation par arc électrique ainsi que dispositif adapté à la mise en oeuvre dudit procédé Download PDF

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Publication number
EP0879645A2
EP0879645A2 EP98108937A EP98108937A EP0879645A2 EP 0879645 A2 EP0879645 A2 EP 0879645A2 EP 98108937 A EP98108937 A EP 98108937A EP 98108937 A EP98108937 A EP 98108937A EP 0879645 A2 EP0879645 A2 EP 0879645A2
Authority
EP
European Patent Office
Prior art keywords
wire
purge gas
sleeve
feed
gas
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Withdrawn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
EP98108937A
Other languages
German (de)
English (en)
Other versions
EP0879645A3 (fr
Inventor
Michael Dr.-Ing. Knepper
Jürgen Dipl.-Ing. Wisniewski
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.)
Grillo Werke AG
Original Assignee
Grillo Werke 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 Grillo Werke AG filed Critical Grillo Werke AG
Publication of EP0879645A2 publication Critical patent/EP0879645A2/fr
Publication of EP0879645A3 publication Critical patent/EP0879645A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B05B7/224—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 having originally the shape of a wire, rod or the like

Definitions

  • the present invention relates to a method for Clean the wire used in wire arc spraying of loose impurities and a device for carrying it out this procedure.
  • a metal spray gun is known from AT-PS 186 481 works according to the flame spray process, and thus the Heat to melt the wire by burning one Fuel mixture is generated.
  • a guide tube is used, which is opposite the wire has a game, so that part of the combustion gases from the combustion chamber in through the wire and the protruding Guide tube formed cavity for heating the wire can flow back.
  • arc spraying Design not possible because of the spray wire on the sleeve must be applied to the transition of the electrical current enable.
  • the one that occurs due to the wire transport inside the nozzle Wear depends heavily on the wire used.
  • the service life of the nozzles used depends to a considerable extent from the mechanical properties of the wire, mechanical Deformations during transport to the burner, but also from the purity of the wire surface. The service life therefore depends on to a considerable extent that the wire used is free of loose impurities.
  • the object of the invention is therefore the service life extend the device for wire arc spraying and the quality of those obtained by wire arc spraying To keep products at the same level for a long time.
  • Part of the purge gas of the atomizing gas stream is preferably used for this purpose branched off.
  • the device for performing the method consists of a current-carrying sleeve and one that can be advanced in the sleeve Wire and a lateral supply of atomizing gas, wherein the sleeve has a supply opening for purge gas and an outlet opening for the purge gas in the opposite direction of the feed direction of the wire. Due to the narrowing at the wire exit end prevents the purge gas from moving in the feed direction can flow.
  • the feed opening has a separate one Has supply for purge gas. It is advantageous if the feed opening in direct connection with the atomizing gas flow stands.
  • the inventive method prevents loose contamination on the surface of the wire up to the constriction of the sleeve and there increased wear the sleeve on the one hand and the fluctuating quality of the wire arc spraying product obtained. Especially according to the invention, the service life of the sleeves used significantly extended.
  • Figure 1 shows the principle of a narrowing sleeve at the wire exit end.
  • Figure 2 shows a typical gun head with the supply of two wires in two sleeves and the side feed of the Atomizer gas flow, the supply openings in direct Connected to the atomizing gas flow.
  • a gun head 3 is more complex, but allows independent Regulation of the atomizing gas flow and the purge gas flow. Furthermore, a gun head according to Figure 3 allows Use of various gases for atomization and the Purge gas flow, which can be an advantage in certain cases.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electrostatic Separation (AREA)
  • Nozzles (AREA)
EP98108937A 1997-05-24 1998-05-15 Procédé de nettoyage du fil utilisé lors de la pulvérisation par arc électrique ainsi que dispositif adapté à la mise en oeuvre dudit procédé Withdrawn EP0879645A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19721840 1997-05-24
DE19721840 1997-05-24

Publications (2)

Publication Number Publication Date
EP0879645A2 true EP0879645A2 (fr) 1998-11-25
EP0879645A3 EP0879645A3 (fr) 1999-05-26

Family

ID=7830439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98108937A Withdrawn EP0879645A3 (fr) 1997-05-24 1998-05-15 Procédé de nettoyage du fil utilisé lors de la pulvérisation par arc électrique ainsi que dispositif adapté à la mise en oeuvre dudit procédé

Country Status (1)

Country Link
EP (1) EP0879645A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010008661U1 (de) 2010-09-29 2012-01-13 Technische Universität Chemnitz Vorrichtung zum thermischen Spritzen
DE102010037848A1 (de) 2010-09-29 2012-03-29 Technische Universität Chemnitz Verfahren und Vorrichtung zum thermischen Spritzen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT186481B (de) 1953-02-19 1956-08-10 Tecma Etablissement Metallspritzpistole

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE835272C (de) * 1949-06-08 1952-03-31 Gustav Dechamps Spritzverfahren, Spritzvorrichtung und strangfoermiges Spritzgut zur Herstellung vonUEberzuegen aus Metallen und/oder nichtmetallischen Stoffen
FR1235927A (fr) * 1958-04-25 1960-07-15 Comptoir General De Metallisat Chalumeau pour pistolet de métallisation
US3873842A (en) * 1973-08-27 1975-03-25 Nl Industries Inc Electrode-atomizer assembly for production of gaseous metal halides
FR2332812A1 (fr) * 1975-11-28 1977-06-24 Metallisation Ste Nle Perfectionnements aux pistolets metalliseurs

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT186481B (de) 1953-02-19 1956-08-10 Tecma Etablissement Metallspritzpistole

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010008661U1 (de) 2010-09-29 2012-01-13 Technische Universität Chemnitz Vorrichtung zum thermischen Spritzen
DE102010037848A1 (de) 2010-09-29 2012-03-29 Technische Universität Chemnitz Verfahren und Vorrichtung zum thermischen Spritzen
WO2012048703A2 (fr) 2010-09-29 2012-04-19 Technische Universität Chemnitz Procédé et dispositif de projection thermique

Also Published As

Publication number Publication date
EP0879645A3 (fr) 1999-05-26

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