EP3263227B1 - Dispositif de revêtement thermique d'une surface et procédé de mesure de la position ou de la forme d'une extrémité de fil dans un dispositif de revêtement thermique d'une surface - Google Patents

Dispositif de revêtement thermique d'une surface et procédé de mesure de la position ou de la forme d'une extrémité de fil dans un dispositif de revêtement thermique d'une surface Download PDF

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Publication number
EP3263227B1
EP3263227B1 EP17177565.3A EP17177565A EP3263227B1 EP 3263227 B1 EP3263227 B1 EP 3263227B1 EP 17177565 A EP17177565 A EP 17177565A EP 3263227 B1 EP3263227 B1 EP 3263227B1
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EP
European Patent Office
Prior art keywords
wire
thermal coating
measuring device
wire end
electrode
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
EP17177565.3A
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German (de)
English (en)
Other versions
EP3263227A1 (fr
Inventor
Christian Klimesch
Leander Schramm
Andreas Schaller
Josef Laibel
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.)
KS Huayu Alutech GmbH
Original Assignee
KS Huayu Alutech GmbH
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 KS Huayu Alutech GmbH filed Critical KS Huayu Alutech GmbH
Priority to PL17177565T priority Critical patent/PL3263227T3/pl
Publication of EP3263227A1 publication Critical patent/EP3263227A1/fr
Application granted granted Critical
Publication of EP3263227B1 publication Critical patent/EP3263227B1/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
    • 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
    • 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
    • B05B7/1606—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 the spraying of the material involving the use of an atomising fluid, e.g. air
    • 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
    • C23C4/134—Plasma spraying

Definitions

  • the invention relates to a device for thermal coating of a surface with a spray gun, a wire feed device with at least one guide element for guiding a wire, a plasma gas source, a nozzle device with a nozzle opening for generating a plasma gas jet, which is directed towards a wire end, a first electrode and a second electrode, the wire acting as the second electrode, and an adjusting device, whereby the wire end can be adjusted relative to the plasma gas jet by a defined adjustment path.
  • the invention also relates to a method for improving the quality of a thermal coating with a device for thermal coating of a surface.
  • Such devices are known from the prior art and are used, for example, in the automotive industry to coat the running surfaces of the cylinder bores in an internal combustion engine and thereby in particular to improve the sliding properties of the pistons on the running surfaces of the cylinder bores.
  • the treads are coated using the PTWA (Plasma Transferred Wire Arc Spraying) process, in which a metal wire is melted and melted using a plasma Metal wire for generating the treads is distributed on the cylinder bores.
  • PTWA Laser Transferred Wire Arc Spraying
  • the device comprises a wire feed device and a nozzle device.
  • the wire feed device has a plurality of guide elements over which a wire is guided and continuously conveyed.
  • the nozzle device comprises a nozzle body, in which a nozzle opening is formed, which is connected to a plasma gas source and generates a plasma gas stream directed towards the wire end.
  • the device has two electrodes, a first electrode being arranged in the nozzle body and a second electrode being formed by the wire, so that an arc arises between the first electrode and the wire and the resulting high temperature means that Wire end melts.
  • the wire feed device has adjustment elements by means of which the wire end can be adjusted relative to the nozzle opening.
  • the adjusting device comprises adjusting screws arranged radially to the longitudinal axis of the wire, which engage a guide element. By screwing in or unscrewing the adjusting screws, the guide element is moved together with the wire, as a result of which the wire end is aligned relative to the plasma gas jet.
  • thermal arc spraying system in which the conveying speed of the wire is adjustable depending on the position of the arc measured by means of a sensor.
  • a coating device in which a wire end or a wire residue quantity is detected by a sensor in order to detect one end of the wire and thus to be able to change the wire reels in good time.
  • the invention is therefore based on the object of further developing a device for the thermal coating of a surface in such a way that the alignment of the wire end relative to the plasma gas jet takes place more precisely and in a time-saving manner.
  • a device for the thermal coating of a surface with the features of the main claim is provided which is attached to the spray gun in a defined position, the position or shape of the wire end being ascertainable via the measuring device, the shape or position of the wire end can be determined precisely and reliably, with only one measurement of the Measuring device determines the adjustment path of the wire end required for the complete melting of the wire end, thus saving a lot of time.
  • the object is achieved by a method for improving the quality of a thermal coating with the features of claim 9.
  • the measuring device is designed as an optical measuring system with at least one optical sensor. This enables non-contact measurement of the wire and, if necessary, the nozzle opening, so that measurements can be taken immediately after the wire end has been melted without having to consider the cooling time.
  • the measuring device is designed as a tactile measuring system with at least one pushbutton, as a result of which the measurements of the measuring device are insensitive to environmental influences and material properties, for example lighting conditions or surface properties.
  • the measuring device is arranged on the side of the wire facing the first electrode.
  • the melting process begins on the side facing the first electrode and progresses to the opposite side of the wire.
  • the measuring device is preferably arranged at the location of the first electrode, the electrode being removable in the meantime.
  • the measuring device can be arranged inexpensively on the spray gun, since the measuring device is automatically correctly aligned with the nozzle opening.
  • the measuring device is arranged on the side of the wire facing away from the first electrode, as a result of which the measuring device can be easily assembled and disassembled.
  • the adjusting device is preferably a mechanically driven system, as a result of which the wire end is adjusted in a simple and inexpensive manner, for example by means of a screw which runs transversely to the wire axis.
  • the adjustment device is an electrically driven system.
  • the measuring device and the adjusting device can be coupled to one another in a simple manner, so that the measurement and adjustment of the wire end takes place automatically.
  • the adjustment of the wire end is monitored by the measuring device, so that an incorrect adjustment of the wire end, for example by a worker, is avoided.
  • the measurement of the measuring device and the adjustment of the wire end are preferably carried out automatically by the adjustment device. This reduces the time required for measuring the shape or position of the wire end and the time required for adjusting the wire end.
  • the in the Figures 1 and 2nd The device shown has a spray burner 2 with a wire feed device 4 and a nozzle device 6.
  • the wire guide device 4 comprises a first ring-shaped guide element 8 and a second ring-shaped guide element 10 for guiding a wire 16.
  • the nozzle device 6 has a nozzle body 7 with a nozzle opening 14 which is transverse to the Axis of the wire 16 is arranged and is directed to the wire end 18.
  • a fluid channel 21 is formed in the nozzle body 7, which opens into the nozzle opening 14 and is connected with the end facing away from the nozzle opening 14 to a plasma gas source, not shown in the figures.
  • a first electrode 20 Arranged in the fluid channel 21 is a first electrode 20, which is fastened to the nozzle body 7 via webs 19, 19 ′ and is connected to a power source (not shown).
  • a second electrode 22 is formed by the wire 16, which is also connected to a current source not shown in the figures.
  • the plasma gas flowing into the fluid channel 21 and required for the formation of plasma flows through the nozzle opening 14 in the direction of the wire end 18.
  • the two electrodes 20, 22 With a corresponding high voltage and current intensity acting on the two electrodes 20, 22, the two electrodes 20, 22 are formed an arc extending through the nozzle opening 14 to the wire end 18.
  • the arc thus causes a high temperature at the wire end 18, causing the wire end 18 to melt.
  • the melted wire material is atomized through the plasma jet and in particular through air nozzle openings 24 in the direction of a surface of a cylinder bore.
  • the air nozzle openings 24 are formed in the nozzle body 7 and are arranged in a circle around the nozzle opening 14.
  • the air nozzle openings 24 are fluidly connected via an air nozzle channel 25 formed in the nozzle body 7 to an air pressure supply, not shown in the figures.
  • the device has an adjusting device 26, which acts on the second guide element 10 and moves the guide element 10 together with the wire 16 transversely to the longitudinal axis of the wire 16.
  • the wire 16 can be adjusted electrically, for example by piezo elements, or mechanically.
  • a mechanical embodiment of the adjusting device 26 is shown, the adjusting device 26 being composed of a first adjusting screw 28 and a first pin 32 as well as a second adjusting screw 30 and a second pin 34.
  • the pins 32, 34 engage radially on the second annular guide element 10, which are each guided in a bore 36, 38 and can be displaced by a respective adjusting screw 28, 30.
  • the adjusting screws 28, 30 are also arranged in the bores 36, 38, the bores 36, 38 each having an internal thread, which enable the adjusting screws 28, 30 to be screwed in and out.
  • the pins 32, 34 and the guide element 10 are displaced radially to the longitudinal axis of the wire 16 and the wire end 18 is displaced relative to the nozzle opening 14.
  • One of the two adjusting screws 28, 30 for the displacement of the guide element 10 must be screwed in and the other of the two adjusting screws 28, 30 must be unscrewed.
  • a measuring device 40 is attached to the spray gun 2 according to the invention.
  • Figure 3 shows such an arrangement of the measuring device 40.
  • the measuring device 40 is an optical system and is arranged at the point at which the second electrode 22 is arranged in the coating process. The second electrode 22 is thus removed between the coating processes and a measuring device 40 is used.
  • the measuring device 40 has an optical sensor 42, which measures the shape of the wire end 18. If the wire end 18 is poorly positioned in relation to the nozzle opening 14, a so-called melting flank arises, which is detected by the measuring device 40. The determined geometry of the melting flank makes it known in which direction the wire has to be displaced in order to melt the entire wire end 18. With a newly inserted wire 16, the device is briefly actuated so that a first melting process takes place and the shape of the wire end 18 changes due to the melting process. This change in shape is detected by the measuring device 40 and the wire end 18 is adjusted based on the measurement of the measuring device 40 by a worker. During the adjustment of the wire 16, the measuring device 40 is still active and monitors the adjustment.
  • the described device for thermal coating of a surface is characterized by the arrangement of the measuring device according to the invention, in that the shape of the wire end 18 is precisely determined, based on this the wire end 18 is adjusted by the worker or, if necessary, automatically and the adjustment by the measuring device 40 is monitored. This prevents defects in the coating.
  • the nozzle device or the wire feed device can be designed differently.
  • the measuring device can also be carried out, for example, using a tactile system with a button.
  • the adjustment device can also be operated electrically and, if necessary, automatically, so that a worker does not have to intervene.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Electromagnetism (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Nozzles (AREA)

Claims (11)

  1. Dispositif pour le revêtement thermique d'une surface à l'aide un pistolet pulvérisateur (2) comportant un dispositif d'alimentation en fil (4) avec au moins un élément de guidage (10, 12) pour guider un fil (14),
    une source de gaz plasma,
    un dispositif de buse (6) présentant une ouverture de buse (14) pour générer un jet de gaz plasma dirigé sur une extrémité de fil (18),
    une première électrode (20) et une deuxième électrode (22), le fil (16) servant comme deuxième électrode (22), et
    un dispositif de réglage (26), par lequel l'extrémité du fil (18) est réglable par une voie de réglage définie par rapport au jet de gaz plasma,
    caractérisée en ce qu'un dispositif de mesure (40) est prévu qui est fixé au pistolet pulvérisateur (2) dans une position définie, la position ou la forme de l'extrémité du fil (18) pouvant être déterminée par le dispositif de mesure (40).
  2. Dispositif de revêtement thermique d'une surface selon la revendication 1, caractérisé en ce que le dispositif de mesure (40) est réalisé comme un système de mesure optique avec au moins un capteur optique (42).
  3. Dispositif de revêtement thermique d'une surface selon la revendication 1, caractérisé en ce que le dispositif de mesure (40) est réalisé comme un système de mesure tactile avec au moins un bouton.
  4. Dispositif pour le revêtement thermique d'une surface selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de mesure (40) est disposé du côté du fil (16) tourné vers la première électrode (20).
  5. Dispositif de revêtement thermique d'une surface selon la revendication 4, caractérisé en ce que le dispositif de mesure (40) est disposé à l'emplacement de la première électrode (20), la première électrode (20) étant amovible entre-temps.
  6. Dispositif de revêtement thermique d'une surface selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif de mesure (40) est disposé du côté du fil (16) détourné de la première électrode (20).
  7. Dispositif pour le revêtement thermique d'une surface selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de réglage (26) est un système entrainé mécaniquement.
  8. Dispositif pour le revêtement thermique d'une surface selon l'une des revendications 1 à 6, caractérisé en ce que le dispositif de réglage (26) est un système entrainé électriquement.
  9. Procédé pour améliorer la qualité d'un revêtement thermique à l'aide d'un dispositif de revêtement thermique d'une surface selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'après un premier actionnement du pistolet pulvérisateur (2), une mesure de la forme de l'extrémité du fil (18) et/ou de la position de l'extrémité du fil (18) par rapport à l'ouverture de buse (14) est effectuée par le dispositif de mesure (40), et que, sur la base de la mesure du dispositif de mesure (40), l'extrémité du fil (18) est ajustée de manière correspondante par le dispositif de réglage (26).
  10. Procédé pour améliorer la qualité d'un revêtement thermique à l'aide d'un dispositif de revêtement thermique d'une surface selon la revendication 9, caractérisé en ce que le réglage de l'extrémité du fil (18) est contrôlé par le dispositif de mesure (40).
  11. Procédé pour améliorer la qualité d'un revêtement thermique à l'aide d'un dispositif de revêtement thermique d'une surface selon l'une des revendications 9 ou 10, caractérisé en ce que le mesurage du dispositif de mesure (40) et le réglage de l'extrémité du fil (18) sont effectués de manière automatisée par le dispositif de réglage (26).
EP17177565.3A 2016-07-01 2017-06-23 Dispositif de revêtement thermique d'une surface et procédé de mesure de la position ou de la forme d'une extrémité de fil dans un dispositif de revêtement thermique d'une surface Active EP3263227B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17177565T PL3263227T3 (pl) 2016-07-01 2017-06-23 Urządzenie do termicznego pokrywania powierzchni oraz sposób pomiaru położenia i kształtu końca drutu w urządzeniu do termicznego pokrywania powierzchni

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016112098.7A DE102016112098A1 (de) 2016-07-01 2016-07-01 Vorrichtung zum thermischen Beschichten einer Oberfläche sowie Verfahren zur Messung der Lage oder der Form eines Drahtendes in einer Vorrichtung zum thermischen Beschichten einer Oberfläche

Publications (2)

Publication Number Publication Date
EP3263227A1 EP3263227A1 (fr) 2018-01-03
EP3263227B1 true EP3263227B1 (fr) 2020-04-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17177565.3A Active EP3263227B1 (fr) 2016-07-01 2017-06-23 Dispositif de revêtement thermique d'une surface et procédé de mesure de la position ou de la forme d'une extrémité de fil dans un dispositif de revêtement thermique d'une surface

Country Status (3)

Country Link
EP (1) EP3263227B1 (fr)
DE (1) DE102016112098A1 (fr)
PL (1) PL3263227T3 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210798A1 (de) * 1992-04-01 1993-10-07 Heinrich Dr Ing Kern Thermische Lichtbogenspritzanlage
US6066833A (en) * 1998-07-29 2000-05-23 Howard Industries Apparatus and method for selectively changing welding wire
DE102008024240B4 (de) * 2008-05-19 2016-04-07 Daimler Ag Beschichtungsvorrichtung und Verfahren zu deren Versorgung mit einem Beschichtungsdraht
DE202008006783U1 (de) * 2008-05-19 2008-08-07 Daimler Ag Beschichtungsvorrichtung
DE102011002501A1 (de) 2011-01-11 2012-07-12 Ford-Werke Gmbh Vorrichtung zum thermischen Beschichten einer Oberfläche

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102016112098A1 (de) 2018-01-04
PL3263227T3 (pl) 2020-11-02
EP3263227A1 (fr) 2018-01-03

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