EP1980331B1 - Procédé et dispositif de revêtement de surfaces - Google Patents

Procédé et dispositif de revêtement de surfaces Download PDF

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Publication number
EP1980331B1
EP1980331B1 EP08004688A EP08004688A EP1980331B1 EP 1980331 B1 EP1980331 B1 EP 1980331B1 EP 08004688 A EP08004688 A EP 08004688A EP 08004688 A EP08004688 A EP 08004688A EP 1980331 B1 EP1980331 B1 EP 1980331B1
Authority
EP
European Patent Office
Prior art keywords
coating
coating material
distributor
wire
wire segments
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.)
Active
Application number
EP08004688A
Other languages
German (de)
English (en)
Other versions
EP1980331A3 (fr
EP1980331A2 (fr
Inventor
Andreas Dr. Fent
Wolfram Dr. Wagener
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1980331A2 publication Critical patent/EP1980331A2/fr
Publication of EP1980331A3 publication Critical patent/EP1980331A3/fr
Application granted granted Critical
Publication of EP1980331B1 publication Critical patent/EP1980331B1/fr
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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
    • 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
    • C23C4/131—Wire arc 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • B05B13/0636—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies by means of rotatable spray heads or nozzles

Definitions

  • the invention relates to a method and a device for coating component surfaces.
  • a material in a layer which amounts to only a few ⁇ m on a regular basis, is applied to a carrier component in order, for example, to increase the wear resistance or to impart certain properties (for example electrical conductivity) to the component surface.
  • thermal coating methods in which the coating material is melted and then - regularly by means of a compressed air or other gas stream - atomized and transported to the surface to be coated, are used.
  • thermal coating processes are plasma coating, high speed flame spraying and electroforming wire spraying.
  • the disclosed therein arc spray unit has a rotatably driven burner shaft in the form of a hollow shaft, which is inserted into the cavity to be coated. At the lower end of the burner shaft, a radially directed nozzle is provided, through which the droplets of the molten coating material are discharged by means of compressed air, which is supplied through the hollow interior of the burner shaft.
  • a replenishment device with two wire rollers is attached to this. Starting from the wire rollers, the two wires are led parallel to the longitudinal axis of the burner shaft up to the top. There, an arc is generated between the two wire ends by means of an electrical high voltage, which melts the wire material. The drops of molten wire are then captured by the flow of compressed air and discharged through the nozzle.
  • the replenishment device ensures a continuous supply of the burner with coating material.
  • a disadvantage of the device DE 198 41 617 A1 is the fact that the supply device for a continuous replenishment of the wires must be firmly connected to the burner shaft, that must rotate with this. In addition, it is characterized by a complex structure.
  • the US 6,168,090 shows a coating system with a splash guard and an automatic Dosierstabzu operation.
  • a device for operating an arc discharge device with successively burning in operation rod electrodes is known in which a plasma torch is used to carry out the chemical reaction, wherein the rod electrodes are preferably carbon cathodes.
  • an improved powder spray gun for atomizing molten metal or ceramic powder wherein a reservoir is carried by the housing.
  • the DE 102 04 251 relates to a spray gun for thermal wire spraying, consisting of a device for melting at least one wire, wherein the wire feeding device is rotatably arranged together with a nozzle system.
  • the invention has for its object to provide an improved device and an improved method for coating components, which reduces at least one known from the prior art disadvantage.
  • a device is to be specified, which is characterized by a structurally simpler structure.
  • the invention is based on the idea, in a device for coating components comprising a distributor device for applying the coating material, to supply the distributing device with a quantity of the coating material that is tailored to a specific coating process or to store it therein. This makes it possible, at least temporarily decouple the distributor of an optionally existing supply device in which larger amounts of the coating material are stored, and simpler, easier and / or cheaper to construct by reducing the rotating mass.
  • the distributor is thus before the coating process, a required amount of coating material from one of the Distributor preferably fed separately formed supply device.
  • “separate” means that the supply device allows charging of the distribution device, but that it can be decoupled at least temporarily from the distribution device, so that a possibly provided rotation and / or a linear process of the distribution device are not transferred to the supply device during the coating process must become.
  • the inventive concept has a positive effect in particular in a device for internal coating, since this regularly has a rotating driven distribution device, in particular in the form of a coating lance with a regularly radially oriented nozzle arranged therein. Due to the - at least temporary - decoupling of the supply device (coating material replenishment) from the distributor (coating lance) it is not rotated during the coating process. This allows the entire coating device to obtain a structurally simpler structure; In particular, the rotary drive of the distributor can be made smaller, which has a positive influence on the manufacturing and operating costs.
  • the invention is preferably used in a thermal coating device in which the coating material is fed in wire form.
  • This makes it possible to supply the distribution device with the coating material in the form of wire segments tailored to the coating process.
  • the tuning of the wire segments may include both a vote on the number of supplied wire segments as well as their mass and / or the materials, etc.
  • wire segments of different lengths can be used for different coating projects.
  • two wire segments of a certain length can be used, while in a subsequent process four wire segments of the same length and possibly made of a different material are required.
  • the invention is not limited to the use of a wire-shaped coating material. Rather, any coating material can be used.
  • any coating material can be used.
  • the use of a powder coating material is known.
  • the pulverulent coating material is supplied to the distribution device in the required amount before the coating process.
  • the amount of the coating material supplied to the distributor device before the coating process is adjusted so that relatively exactly one or more complete coating processes are carried out.
  • the distributor is again supplied coating material to complete the process.
  • the invention is preferably used in a coating device in which the coating material is melted by means of a melting device and particularly preferably by means of an arc.
  • arc wire spraying devices can be combined particularly advantageously with wire-shaped coating material, since it can be used at the same time for generating the arc, at least for an electrically conductive material.
  • at least two wires of coating material can be guided within the distributor so that their ends are positioned at a defined distance from each other, so that the formation of an arc is made possible taking into account the applied voltage.
  • the discharge of the coating material is preferably carried out by means of a (pressure) gas flow, with which the particles of the coating material, for example, the particles of a powdered coating material or the drops of a liquid or molten material, are sprayed onto the surface to be coated.
  • a (pressure) gas flow with which the particles of the coating material, for example, the particles of a powdered coating material or the drops of a liquid or molten material, are sprayed onto the surface to be coated.
  • the distribution device may have a nozzle, the design of which depends in particular on the type of coating material used.
  • the type of (compressed) gas used is usually also process-dependent. Frequently, air or a protective gas is used.
  • Fig. 1 shows an embodiment of a coating device according to the invention.
  • the illustration is merely schematic, so that certain structural details and elements that may be necessary for a complete function of the device, however, do not contribute significantly to the explanation of the invention, are not shown for reasons of clarity.
  • the illustrated coating device is designed as an arc wire spraying device and has a distributor device in the form of a spray lance 2.
  • the spray lance 2 consists essentially of a base body 3, in which two wire segments 4, which consist of a coating material and have a defined, tuned to the coating process length, are guided within guides 1.
  • the two wire segments 4 are arranged within the base body 3 such that their two ends facing the front end of the base body 3 are positioned at a small distance from each other.
  • an electrical high voltage is generated between the two wire segments 4, which serves to form an arc between the two, the front end of the base body 3 facing ends of the wire segments 4.
  • the generated arc causes the wire segment material to melt.
  • the molten wire material is detected by a compressed air flow which is supplied to the spray lance 2 via a compressed air supply 5.
  • the compressed air flow is not shown channels to the arc where it detects the molten coating material and this discharged via a radially oriented and arranged at the front end of the spray lance nozzle 6, whereby a nozzle 6 opposite portion of the inner wall of a (not shown) hollow body is coated.
  • the wire segments 4 shorten continuously during the coating process.
  • a tracking device (not shown) may be provided which moves the wire segments 4 within the spray lance 2, i. traced at the same speed, so that the important for the formation of an arc distance between the ends of the wire segments 4 is maintained.
  • rollers may be provided which guide the wire segments within the spray lance and frictionally drive them at the required speed to ensure a continuous supply of coating material and possibly eject unused wire segment residues after the coating process.
  • the spray lance 2 is driven in rotation by means of a rotary drive, not shown, and moved along a hollow body to be coated, for example along the longitudinal axis of a hollow cylinder or the spray lance 2 by means of a linear drive, also not shown.
  • a rotary drive not shown
  • the superposition of the two movements results in a spiral coating course.
  • the remnants of the wire segments 4 which may remain in the lance are ejected.
  • a supply device is provided which automatically supplies the distribution device with the required wire segments.
  • a supply device is preferably formed separately from the distribution device, such that it can indeed feed the distribution device, but does not have to co-rotate with it during the coating process.
  • the rotating mass of the entire device can be kept low, which saves energy costs on the one hand and on the other hand makes it possible to dimension the rotary drive and optionally also the linear drive smaller, which reduces the manufacturing costs.
  • Such a feeding device may in particular comprise a wire segment turret magazine 7, as shown in the FIGS. 2 and 3 is shown.
  • a wire segment turret magazine 7 This includes a plurality of wire segments 4, optionally sorted by various lengths, materials, etc., and from which the feeder selects the appropriate wire segments needed for the subsequent coating process to supply to the distributor.
  • the revolver magazine may comprise a helical guide by means of which the wire segments 4 are sorted so that they can be accurately positioned in the corresponding seats in the coating apparatus, as shown in FIGS FIGS. 4a - d is shown.
  • FIGS. 4a - d show in a schematic representation the automated loading of a coating device according to the invention with two wire segments 4 required for a coating process.
  • Fig. 4a shows a coating device according to the invention in the form of a spray lance 2, as already described with reference to the Fig. 1 has been described before the coating process and without wire segments 4 of coating material.
  • the spray lance 2 is a wire segment turret magazine, as it already based on the FIGS. 2 and 3 has been described, pivoted by means of a pivoting device, not shown on the spray lance ( Fig. 4a ) and two wire segments in the designated guides 1 introduced ( Fig. 4b ).

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electromagnetism (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Claims (10)

  1. Procédé de revêtement notamment du revêtement intérieur d'une pièce,
    le matériau de revêtement étant appliqué sur la pièce à l'aide d'un dispositif de distribution (2), qui reçoit une quantité déterminée de matière de revêtement (4) en fonction de l'opération de revêtement qui a précédé cette opération, et
    le dispositif répartiteur (2) est entraîné en rotation,
    procédé caractérisé en ce que
    le matériau de revêtement (4) est fourni sous la forme de segments de fils.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le matériau de revêtement (4) est fourni à partir d'un dispositif d'alimentation (7) distinct du dispositif de distribution (2).
  3. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le matériau de revêtement (4) est fondu à l'aide d'un arc électrique.
  4. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    le matériau de revêtement (4) est transporté sur la pièce par une veine de gaz.
  5. Dispositif de revêtement notamment de revêtement intérieur d'une pièce comprenant un dispositif de répartition (2) pour le matériau de revêtement,
    * le dispositif de distribution (2) contenant en réserve, une quantité de matériau de revêtement (4) définie en fonction de l'opération de revêtement dans le dispositif de distribution (2), et
    * le dispositif de distribution (2) est entraîné en rotation,
    dispositif caractérisé en ce que
    le matériau de revêtement (4) se présente sous la forme de segments de fils (4).
  6. Dispositif de revêtement selon la revendication 5,
    caractérisé par
    un dispositif d'alimentation (7) installé séparément du dispositif de distribution (12) pour le matériau de revêtement (4).
  7. Dispositif de revêtement selon la revendication 5,
    caractérisé en ce que
    le dispositif d'alimentation (7) comporte un magasin révolver contenant des segments de fils.
  8. Dispositif de revêtement selon l'une des revendications 5 à 7,
    caractérisé par
    un dispositif de fusion pour faire fondre le matériau de revêtement.
  9. Dispositif selon la revendication 8,
    caractérisé par
    un dispositif de fusion par arc électrique.
  10. Dispositif selon les revendications 5 à 9,
    caractérisé par
    un dispositif de distribution à veine gazeuse.
EP08004688A 2007-04-12 2008-03-13 Procédé et dispositif de revêtement de surfaces Active EP1980331B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007017173A DE102007017173A1 (de) 2007-04-12 2007-04-12 Verfahren und Vorrichtung zur Beschichtung von Bauteiloberflächen

Publications (3)

Publication Number Publication Date
EP1980331A2 EP1980331A2 (fr) 2008-10-15
EP1980331A3 EP1980331A3 (fr) 2010-04-14
EP1980331B1 true EP1980331B1 (fr) 2012-07-18

Family

ID=39615804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08004688A Active EP1980331B1 (fr) 2007-04-12 2008-03-13 Procédé et dispositif de revêtement de surfaces

Country Status (3)

Country Link
EP (1) EP1980331B1 (fr)
DE (1) DE102007017173A1 (fr)
ES (1) ES2387926T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115318519B (zh) * 2022-08-31 2024-05-28 无锡市晟然智能装备有限公司 一种静电喷涂装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1984514U (de) * 1967-11-24 1968-04-25 Metco Inc Pulverflammspritzpistole.
CH591799A5 (fr) * 1975-08-05 1977-09-30 Lonza Ag
WO1997049497A1 (fr) * 1996-06-24 1997-12-31 Tafa, Incorporated Metalliseur a flux rotatif
US5707693A (en) * 1996-09-19 1998-01-13 Ingersoll-Rand Company Method and apparatus for thermal spraying cylindrical bores
DE19841617A1 (de) 1998-09-11 2000-03-23 Daimler Chrysler Ag Rotierende Drahtlichtbogenspritzanlage zur Beschichtung von Innenflächen
US6168090B1 (en) * 1998-12-31 2001-01-02 Edgar C. Baker Flame spray system with splatter blocking and automated rod delivery apparatuses
DE10204251A1 (de) * 2002-02-02 2003-08-14 Daimler Chrysler Ag Spritzpistole für thermisches Drahtspritzen

Also Published As

Publication number Publication date
ES2387926T3 (es) 2012-10-04
EP1980331A3 (fr) 2010-04-14
EP1980331A2 (fr) 2008-10-15
DE102007017173A1 (de) 2008-10-16

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