WO2013083672A1 - Dispositif de projection plasma et procédé de revêtement - Google Patents

Dispositif de projection plasma et procédé de revêtement Download PDF

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Publication number
WO2013083672A1
WO2013083672A1 PCT/EP2012/074595 EP2012074595W WO2013083672A1 WO 2013083672 A1 WO2013083672 A1 WO 2013083672A1 EP 2012074595 W EP2012074595 W EP 2012074595W WO 2013083672 A1 WO2013083672 A1 WO 2013083672A1
Authority
WO
WIPO (PCT)
Prior art keywords
plasma
coating
treatment
plasma torch
spray gun
Prior art date
Application number
PCT/EP2012/074595
Other languages
German (de)
English (en)
Inventor
Peter Ernst
Jürg WIPF
Thomas LÖHKEN
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 WO2013083672A1 publication Critical patent/WO2013083672A1/fr

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Classifications

    • 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
    • C23C4/18—After-treatment
    • 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
    • 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
    • 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
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • 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
    • C23C4/14—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying for coating elongate material
    • C23C4/16—Wires; Tubes

Definitions

  • Plasma sprayer as well as coating process
  • the invention relates to a plasma spraying apparatus for coating a
  • Plasma spray guns are generally used for coating of thermally or mechanically highly stressed parts by a
  • a corresponding material such as a ceramic or a suitable metal alloy
  • a gas flow on the surface to be coated As long as the surface to be coated is easily accessible from the outside, it can be coated with a conventional plasma spray gun.
  • a plasma spraying device with a plasma jet which emerges axially with respect to its longitudinal axis, this is highly inefficient, since only a negligible part of the plasma jet is used molten coating material is also effectively applied to the wall.
  • Cylinder running surfaces of internal combustion engines wherein corresponding coatings are applied by various thermal spraying methods in the prior art.
  • this is particularly, but not only, widely used in engines for automobiles, aircraft, boats and ships of all kinds.
  • Plasma torch or at a certain angle of inclination to
  • Rotation axis from the plasma torch and is, for example, with the aid of a pressurized gas stream, which may often be formed by a noble gas, or an inert gas such as nitrogen, or simply formed by air, to form the desired surface layer on the cylindrical convex surface.
  • a pressurized gas stream which may often be formed by a noble gas, or an inert gas such as nitrogen, or simply formed by air.
  • a thermal spray powder as the starting material for the coating.
  • Such a rotary plasma spraying device is e.g. already in the
  • EP0601968 A1 discloses. State-of-the-art devices such as Sulzer Metco's SM-F210 burners have long been very successful in use and firmly established in the market. But also solutions using injection wires in rotating burners are known, as shown for example in WO 2008/037514.
  • the corresponding cylinder surfaces are usually activated by various methods prior to the thermal coating, for example by corundum blasting, chilled cast iron, high pressure water jets, various laser processes or by other known activation process.
  • Substrates made of light metal alloys based on Al or Mg are most often pretreated and subsequently coated. The activation of the surfaces guarantees in particular a better adhesion of the thermally sprayed coatings.
  • Multilayer systems appear advantageous, one after the other
  • the applied layer very special chemical, physical, topological or other properties obtained, for example, on the
  • Can change layer thickness e.g. applied directly to the surface of a first coating that guarantees good adhesion to the cylinder wall.
  • This first adhesive layer may then be coated e.g.
  • a second layer is applied, which finally forms the cylinder surface in a motor and has good lubricating, friction, and running properties, so that a piston runs optimally on such a coated surface.
  • Sandblasting device must be removed after sandblasting, the surface to be coated cleaned, possibly dried, the environment of the engine block from the remainder of sandblasting either cleaned or brought the engine block for subsequent coating in another environment, such as in a Coating booth in which the rotatable plasma torch is located.
  • a first adhesive layer of a first material is applied to the activated cylinder surface by the rotating burner.
  • a first adhesive layer of a first material is applied to the activated cylinder surface by the rotating burner.
  • the surface layer which is later to form the cylinder surface, either the plasma torch is changed or a supply of another coating material is connected to the plasma torch, and the surface layer is thermally sprayed on.
  • the object of the invention is therefore to provide a plasma spraying apparatus and a coating method for coating a curved surface, in particular a convex inner surface of a bore or
  • the invention thus relates to a plasma spraying apparatus for coating a curved surface, in particular a convex inner surface of a bore or pipe wall.
  • a first plasma torch for generating a coating beam from a first coating material by means of an arc is provided on a burner shaft of the plasma spraying device such that the first plasma torch is rotatable about a shaft axis of the burner shaft for coating the curved surface.
  • Burner shaft for carrying out a surface treatment on Burner shaft additionally provided a rotatable about the shaft axis arranged treatment device
  • Essential to the invention is thus that for carrying out a
  • Coating process is performed on the burner shaft nor a rotatable about the shaft axis arranged treatment device is provided, so that at the same time or with one and the same plasma spray gun
  • the at least one additional rotatable treatment device on the burner shaft can preferably be an additional plasma coating device, so that with one and the same plasma spraying device in one or successive processing steps, e.g. a multilayer coating system can be sprayed on.
  • the additional treatment device is a device for activating the surface to be coated.
  • the treatment device may be e.g. an energy ray, in the
  • Spezielen a laser beam or very particularly preferably provide a second plasma jet available, whereby the surface can be previously activated for the coating process, so that in particular an improved adhesion of the sprayed surface layer can be achieved.
  • additional treatment device may be provided on one and the same burner shaft.
  • a further treatment device eg an energy beam, preferably a laser beam, or a treatment device providing a plasma jet, may be provided can, with which prior to the coating process, the surface can be activated.
  • a plasma phtapparat according to the invention depends on the specific application. So it may be possible in very special cases that an activation of the surface is not necessary, but a two- or multi-layer coating system is to be sprayed. In such a case, the inventive
  • Plasma spraying device via two plasma torches both being designed for applying a thermal spray coating either as a powder spraying device or as a wire spraying device in a conventional manner.
  • the surface may be activated in two steps with two different plasma jets or in one step with a laser and in another step with a plasma jet.
  • a plasma spray gun of the present invention has two additional ones in addition to the first plasma torch
  • Such cylinder liners often have an enormous size.
  • cylinder liners with a height of 2.5 m and more with a diameter of 1 m are quite common.
  • a corresponding plasma spraying device according to the invention can be equipped with virtually any number of plasma torches and / or additional treatment devices, since sufficient space is available in such large cylinder liners.
  • the invention by no means refers to the coating of inner walls of cylinders of internal combustion engines of all kinds.
  • a plasma spraying device according to the invention can also be used for coating other objects, even very large objects, in which a rotating plasma spraying device can be advantageously used.
  • the internal coating of boilers e.g. from
  • the inner coating of pipeline pipes for transporting oil, gas or other fluids called, often chemically or mechanically are aggressive, so that the inner walls must be protected by thermal spray coatings.
  • the present invention for the first time a plasma spray gun and a coating method for coating a curved surface, in particular a convex inner surface of a bore or pipe wall available, with the effort for the activation and for the application of multilayer coatings significantly reduced and at the same time easier and cheaper to handle than known from the prior art devices and methods and thus also a much higher degree of automation can be achieved.
  • the treatment device can be, for example, a second, known per se plasma torch for providing a
  • treatment beam in the form of a plasma jet in another preferred embodiment, can also provide the treatment beam, for example in the form of an energy beam, in particular in the form of a laser beam.
  • the power generation source so for example a
  • Laser device is provided on the burner shaft itself. In another embodiment, it is also quite possible that the
  • Power generation source e.g. a laser is provided outside of the burner shaft away from it and the energy beam is transmitted via a suitable line, in the case of a laser e.g. is supplied via a laser light guide to the burner shaft for use as an activation source.
  • the treatment beam is preferably arranged in such a way and can be controlled in particular by means of a drive device that the
  • the surface is activated with the treatment beam.
  • the treatment steel which is preferably a plasma jet, a second Be coating material supplied, so that even with the treatment beam, a thermal coating is feasible.
  • the first plasma torch and the treatment device can be arranged offset relative to one another with respect to the shaft axis or can also be arranged at the same axial height with respect to the shaft axis.
  • the first plasma torch and / or the treatment device is arranged pivotably on the burner shaft, so that an angle below that of the coating jet of the first
  • Treatment device individually, depending on the application is adjustable.
  • the first plasma torch and the treatment device at a predeterminable angle, preferably at an angle between 0 ° and +/- 180 0, in particular at an angle of approximately +/- 45 ° or + / -90 ", more preferably at an angle of about 80 ° to each other.
  • the first plasma torch and the processing means are rotatable around the circumferential direction at different rotational speeds, e.g. two different rotary drives are provided or for example by the rotary drives of the plasma torch and the treatment device are coupled together via a suitable gear, so that the plasma torch and the treatment device it
  • Burner stems are rotatable.
  • thermal spray materials in particular wettable powders or sprayed wires, are suitable as spray materials for forming the coating on the surface to be coated. That is, the first plasma torch and / or the treatment device
  • the coating material may be supplied in the form of a wettable powder, in the form of a spray wire or in any other suitable form.
  • the invention further relates to a coating method for coating a curved surface, in particular a convex inner surface of a bore or pipe wall, by means of a plasma spraying device.
  • the first plasma torch is rotated to coat the curved surface around a shaft axis of the burner shaft.
  • Performing a surface treatment on the burner shaft additionally provided a treatment device which is rotated about the shaft axis for the treatment of the surface.
  • the treatment means in the form of a second plasma torch to provide a
  • Treatment beam provided in the form of a plasma jet and is preferably used to activate the surface of the object to be coated.
  • the object to be coated is preferably used to activate the surface of the object to be coated.
  • Treatment beam in the form of an energy beam, in particular provided in the form of a laser beam and preferably used to activate the surface of the object to be coated.
  • a second coating material may be supplied to the treatment steel, and a coating may be performed with the second treatment beam.
  • FIG. 1 a first embodiment of an inventive device
  • FIG. 2 shows an exemplary embodiment according to FIG. 1, plasma torch and treatment device being axially offset from each other;
  • Fig. 3 shows another embodiment with two
  • Coating equipment and different rotation. 1 shows a schematic representation of a first simple embodiment of a plasma spraying device according to the invention when coating a cylinder running surface of a cylinder
  • a first plasma torch 4 for generating a coating jet 5 from a first coating material 6 by means of an arc is provided on a burner shaft 3 of the plasma spraying device 1, the first plasma torch 4 for coating the curved surface 21 rotatable about a shaft axis A of the burner shaft 3 is arranged.
  • the burner shaft 3 itself rotates, as indicated by the arrow U.
  • a treatment device 7, 71 arranged rotatably about the shaft axis A is additionally provided on the burner shaft 3, which in the exemplary embodiment of FIG. 1 is a further plasma torch.
  • coating substrate or other boundary conditions may be predetermined, be optimally adjusted. It is also possible that, for example, the directions of the treatment beam 8, 81 and / or the first
  • Plasma torch 4 adjustable i. Are controllable and / or controllable, e.g. by the direction being influenced by suitable means such as servomotors, hydraulic or pneumatic actuating means or other suitable known means of adjustment so that an optimal work result is achieved. That is, both the first plasma torch 4 and the
  • Treatment device 7, 71 can be arranged pivotably on the burner shaft 3 in one or more spatial directions.
  • the first plasma torch 4 and the treatment device 7, 71 are preferably in relation to a circumferential direction U about the shaft axis A at a predetermined angle a, preferably at an angle a of about 90 °, particularly preferably, as shown in Fig. 1, offset at an angle ⁇ of about 180 ° to each other.
  • the advantage here is that between the activation of the surface 21 and the subsequent
  • FIG. 3 shows a further exemplary embodiment with two
  • the treatment device 7, 71 although also a plasma torch, but this is designed so that it is not the surface 21 is activated, Instead, the treatment device 7, 71 serves to apply another coating 221 to the coating 22 applied by the first plasma torch 4 in the long term.
  • the treatment device 7, 71 is provided on an inner part of the shaft 31 within the burner shaft 3, wherein on the burner shaft 3, a window F is provided so suitable that the treatment beam 81, which here is a second coating beam 81, unhindered outside on the substrate to be coated can escape.
  • the outer burner shaft 3 and the inner sub-shaft 31 may be e.g. be mounted on a common axis through which e.g. Also, all the necessary supply lines for the devices are routed to the burner shaft 3 and to the subshaft 31 and, for example, the burner shaft 3 and subshaft 31 can be coupled by means of a suitable gear mechanism so that both can have a different rotational speed, e.g. leads to the fact that the first layer 22 and the 221 injected thereon have different thickness, because the exposure time of the two different coating jets is different.
  • outer burner shaft 3 and the inner sub-shaft 31 each have a separate drive, so that their respective rotational speeds are individually adjustable.
  • Embodiments is limited and in particular all suitable combinations of the illustrated embodiments are covered by the invention.

Abstract

L'invention concerne un dispositif de projection plasma (1) pour revêtir une surface courbe (21), notamment une surface intérieure convexe (21) d'une paroi de trou de forage ou de tuyau. La tige de brûleur (3) du dispositif de projection plasma (1) comporte un premier brûleur plasma (4) pour produire un jet de revêtement (5) composé d'une première matière de revêtement (6) au moyen d'un arc électrique (4), de telle manière que le premier brûleur plasma (4) peut tourner autour d'un axe de tige (A) de la tige de brûleur (3) pour revêtir la surface courbe (21). Pour la réalisation d'un traitement de surface, la tige de brûleur (3) comporte par ailleurs un dispositif de traitement (7, 71) disposé rotatif autour de l'axe de tige (A). L'invention concerne en outre un procédé de revêtement pour revêtir une surface courbe.
PCT/EP2012/074595 2011-12-09 2012-12-06 Dispositif de projection plasma et procédé de revêtement WO2013083672A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11192846.1 2011-12-09
EP11192846 2011-12-09

Publications (1)

Publication Number Publication Date
WO2013083672A1 true WO2013083672A1 (fr) 2013-06-13

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Country Status (1)

Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013223202A1 (de) * 2013-11-14 2015-05-21 Siemens Aktiengesellschaft Geometriebedingte Spritzfleckanpassung bei Beschichtungsverfahren
CN105018878A (zh) * 2014-04-17 2015-11-04 北京廊桥材料技术有限公司 旋转等离子喷涂设备
CN106086758A (zh) * 2016-07-22 2016-11-09 芜湖鼎瀚再制造技术有限公司 一种多功能超音速喷涂装置
DE102021005106A1 (de) 2021-10-08 2023-04-13 Technische Universität Chemnitz, Körperschaft des öffentlichen Rechts Verfahren zum Beschichten einer Innenfläche einer Zylinderlaufbuchse oder eines Zylinders aus einem Leichtmetall zur Realisierung einer Innenlauffläche für einen Kolben eines Verbrennungsmotors und derartig ausgebildete Beschichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0601968A1 (fr) 1992-12-05 1994-06-15 Plasma Technik Ag Appareil de pulvérisation par plasma
EP0839924A1 (fr) * 1996-10-29 1998-05-06 Ingersoll-Rand Company Procédé amélioré et appareil pour le revêtement double pour projection thermique de perçages cylindriques
DE19934991A1 (de) * 1998-12-18 2000-06-21 Volkswagen Ag Verfahren zum thermischen Beschichten einer Fläche eines Innenraumes und Anordnung zur Durchführung des Verfahrens
WO2008037514A1 (fr) 2006-09-27 2008-04-03 Sulzer Metco Osu Gmbh dispositif rotatif de projection de fil ainsi que procédé de revêtement de la surface d'une pièce

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0601968A1 (fr) 1992-12-05 1994-06-15 Plasma Technik Ag Appareil de pulvérisation par plasma
EP0839924A1 (fr) * 1996-10-29 1998-05-06 Ingersoll-Rand Company Procédé amélioré et appareil pour le revêtement double pour projection thermique de perçages cylindriques
DE19934991A1 (de) * 1998-12-18 2000-06-21 Volkswagen Ag Verfahren zum thermischen Beschichten einer Fläche eines Innenraumes und Anordnung zur Durchführung des Verfahrens
WO2008037514A1 (fr) 2006-09-27 2008-04-03 Sulzer Metco Osu Gmbh dispositif rotatif de projection de fil ainsi que procédé de revêtement de la surface d'une pièce

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
SERRES N ET AL: "Microstructures of Metallic NiCrBSi Coatings Manufactured via Hybrid Plasma Spray and In Situ Laser Remelting Process", JOURNAL OF THERMAL SPRAY TECHNOLOGY, vol. 20, no. 1-2, 12 November 2010 (2010-11-12), ASM International [US], pages 336 - 343, XP055018677, ISSN: 1059-9630, DOI: 10.1007/s11666-010-9565-1 *
ZIERIS R ET AL: "Investigation of AISi coatings prepared by laser-assisted atmospheric plasma spraying of internal surfaces of tubes", PROCEEDINGS OF THE INTERNATIONAL THERMAL SPRAY CONFERENCE (ITSC), OSAKA [JP] MAY 10 - 12, 2004, 10 May 2004 (2004-05-10), DVS-Verlag, Düsseldorf [DE], pages 651 - 656, XP009156349, ISBN: 3-87155-792-7 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013223202A1 (de) * 2013-11-14 2015-05-21 Siemens Aktiengesellschaft Geometriebedingte Spritzfleckanpassung bei Beschichtungsverfahren
CN105018878A (zh) * 2014-04-17 2015-11-04 北京廊桥材料技术有限公司 旋转等离子喷涂设备
CN106086758A (zh) * 2016-07-22 2016-11-09 芜湖鼎瀚再制造技术有限公司 一种多功能超音速喷涂装置
DE102021005106A1 (de) 2021-10-08 2023-04-13 Technische Universität Chemnitz, Körperschaft des öffentlichen Rechts Verfahren zum Beschichten einer Innenfläche einer Zylinderlaufbuchse oder eines Zylinders aus einem Leichtmetall zur Realisierung einer Innenlauffläche für einen Kolben eines Verbrennungsmotors und derartig ausgebildete Beschichtung

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