EP1258540A1 - Mask member for placing on an engine body during the thermal coating of the internal cylinder bores and process using this masking member - Google Patents

Mask member for placing on an engine body during the thermal coating of the internal cylinder bores and process using this masking member Download PDF

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Publication number
EP1258540A1
EP1258540A1 EP02405024A EP02405024A EP1258540A1 EP 1258540 A1 EP1258540 A1 EP 1258540A1 EP 02405024 A EP02405024 A EP 02405024A EP 02405024 A EP02405024 A EP 02405024A EP 1258540 A1 EP1258540 A1 EP 1258540A1
Authority
EP
European Patent Office
Prior art keywords
mask
insert
coating
cylinder bores
cylinder bore
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.)
Granted
Application number
EP02405024A
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German (de)
French (fr)
Other versions
EP1258540B1 (en
Inventor
Ralph Herber
Peter Zürcher
Gérard BARBEZAT
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
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Publication date
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Publication of EP1258540A1 publication Critical patent/EP1258540A1/en
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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
    • C23C4/12—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/20—Masking elements, i.e. elements defining uncoated areas on an object to be coated
    • 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
    • C23C4/01—Selective coating, e.g. pattern coating, without pre-treatment of the material to be coated
    • 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
    • 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

Definitions

  • the invention relates to a mask for mounting on an engine block during thermal Coating cylinder bores embedded therein according to the claim 1 and a method for the thermal coating of cylinder bores of engine blocks using a mask according to claim 13.
  • a cover template is known, which is to be placed on the Cylinder crankcase of an internal combustion engine is determined.
  • This Cover template has several through openings, through which a coating tool be inserted into the interior of the cylinder crankcase can.
  • the cover template is designed so that all other areas of the cylinder crankcase are covered by them.
  • the cover template has this an exact flat underside, on the cylinder head surface that has already been ground flat of the cylinder crankcase is determined to lie. It understands is that such a cover template is expensive to manufacture. Also is they cannot be used universally because they are related to the expansion of the cylinder crankcase must be adjusted so that all other areas of the cylinder crankcase are covered.
  • the underside has to be reworked from time to time to keep the flatness. This is important because an uneven bottom there is a risk that when coating the interior of the cylinder crankcase via a possible gap between the cylinder head surface and the cover template coating material on the cylinder head surface can reach and pollute them.
  • the object of the invention is now an inexpensive, reusable and to propose an easy-to-use mask that activates the thermal Coating device outside the cylinder bore to be coated allows without the engine block or the environment due to coating particles is contaminated, whereby the mask does not cover the entire top of the engine block and should ensure a high quality of the applied layer should.
  • the present invention In case another approach is chosen.
  • Such a mask does not cover the whole Surface of the engine block to be coated, but only an annular Area around the cylinder bore to be coated. On this circular The mask lies in the area around the cylinder bore to be coated on the engine block.
  • Such a hollow cylindrical mask has i.a. the advantage that it is very easy and inexpensive to manufacture and due to the small contact area a secure, gap-free support of the mask on the engine block in the area the cylinder bore to be coated can be reached.
  • Preferred embodiments of the mask are in dependent claims 2 to 11 circumscribed, while in claim 12 a mask arrangement with at least two according to one of claims 1 to 11 trained masks is claimed.
  • the height of the mask is preferably selected so that it is higher than the maximum vertical extension of the coating jet when the coating device is in the mask is inserted. This allows the coating head of the coating device can be inserted into the mask and activated in the inactive state can. This generally ensures the quality of the coating process because there is no significant contamination of the top of the engine block caused by the coating jet because there are no coating particles from the mask escape. On the other hand, there is a regular coating on the cylinder surface reached because the coating process is started outside the cylinder bore and there is a continuous layer transition from the mask to the cylinder bore can.
  • An engine block 1 shown in cross section is schematically shown in FIG In-line engine, a mask 4 placed on the top 7 thereof and the front part 8 a coating device can be seen.
  • a coating device for example a plasma spraying device with a rotating coating head 9 is provided become.
  • the engine block 1 is provided with a plurality of cylinder bores this representation only a cylinder bore 2 can be seen.
  • the one on the top of the Engine blocks 1, mask 4 fixed coaxially to cylinder bore 2, consists of a tubular Outer part 5 and an essentially hollow cylindrical insert 6.
  • the mask 4 and its insert 6 are on the diameter of the to be coated Cylinder bore 2 matched. In the present case, the inside diameter of the Insert 6 slightly larger than the diameter of the cylinder bore 2.
  • the Insert 6 Since the Insert 6 is also coated, its inner diameter changes with increasing Useful life; d. H. the inner diameter of the insert 6 increases with increasing Period of use from. In the present case, this insert 6 is designed as a wearing part, which is usually removed after one to ten applications. By providing an insert 6 does not need to be replaced with the entire mask 4 be, but only the insert 6. This is preferably made of a metallic, ceramic or organic material or a combination thereof. The height of the mask 4 is normally between 20 and 40 mm. It is definitely chosen so that the coating beam 10, as shown, on the full extent Inside of the mask 4 strikes when the coating head 9 is inserted into the mask 4 is.
  • the coating head 9 By first introducing the coating head 9 into the mask 4 and only afterwards is activated, it can be ensured that no significant contamination the environment is caused by coating particles. After the coater is activated, the head 9 can slowly retract into the cylinder bore 2 become. As a result, the cylinder bore 2 or its walls 3 becomes continuous coated and there is no irregular starting layer.
  • the insert 6 is preferably inserted loosely in the outer part 5 so that it is vertical Direction is movable relative to the outer part 5. To make the insert fall out 6 to prevent from the outer part 5, for example if the latter from the engine block 1 is lifted, the insert 6 with a stop in the form of a Provide top circumferential shoulder 6a.
  • the insert 6 is preferably something formed higher than the outer part 5, so that it faces the engine block 1 rests - and not with the shoulder 6a on the outer part 5 of the mask - if the Mask 6 is placed on the engine block 1. On the one hand, this makes a gap-free Support of the insert 6 ensured on the engine block 1 and on the other hand, the Insert 6 can be exchanged in the simplest way. By providing different The mask can also be used very quickly on different bore diameters be adjusted.
  • the mask 4 can be positioned with positioning means for aligning and / or fixing the engine block 1 are provided.
  • positioning means for aligning and / or fixing the engine block 1 are provided.
  • pins or bolts are provided, which engage in holes drilled in the engine block 1. Both the positioning means and the holes in the engine block 1 are not shown in the present case.
  • the layer is preferably applied by plasma spraying, high-speed flame spraying, Arc spraying, flame spraying, inert gas plasma spraying or inert gas arc spraying.
  • Fig. 2 shows a cross section through the engine block with a second embodiment of a mask 4a.
  • This is in turn tubular, that is to say essentially hollow-cylindrical, no insert being provided.
  • the mask 4a is designed in such a way that the layers 11, 12 applied on the inside by the coating device can be mechanically removed if necessary, for example by unscrewing.
  • the layer can also be removed by blasting with abrasive powders such as corundum (Al 2 O 3 ) or silicon carbide (SiC).
  • the inner diameter of the mask 4a is preferably somewhat larger than the diameter the cylinder bore 2 so that the layers 11, 12 are not complete, i. H. until the inner diameter of the mask 4a must be removed, which without damage or weakening the mask 4a would hardly be possible anyway. To the present For example, it would suffice if the inner layer 11 were removed.
  • FIG. 3 shows a further exemplary embodiment of the invention.
  • a mask arrangement which consists of several masks, which by a Frame 13 are interconnected.
  • the distance between the individual masks is adjusted to the distance between the cylinder bores of the engine block.
  • the individual mask 4 or its insert 6 is essentially only on one circular surface along the cylinder bore 2 to be coated.
  • Air is preferably passed through during the coating process located cylinder bore directed by the air on the bottom the cylinder bore is sucked off by means not shown.
  • On Sucking the air has the advantage that it is not on the wall of the cylinder bore applied coating particles are reliably discharged downwards and cannot be reflected on the top of the engine block.
  • the content of oxygen bound in the layer can be influenced in a defined manner.
  • it can also be used instead of air, for example nitrogen or another gaseous medium due to the active coating process to guide the existing cylinder bore.
  • Mask 4, 4a brings an advantage in this regard by using as an extension the cylinder bore 2 acting mask within the cylinder bore 2 more favorable flow conditions prevail than without a mask, which ultimately again expressed in a more uniform quality of the applied layer.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Physical Vapour Deposition (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Chemical Vapour Deposition (AREA)

Abstract

Mask (4) for placing on an engine block (1) during thermal coating of cylinder bores (2) has a hollow cylindrical shape and agrees with the diameter of the bores to be coated. Preferred Features: The mask has a tubular outer part (5) and an insert (6). The mask and the insert lie on a circular surface along the cylinder bores to be coated. The insert protrudes over the outer part on the lower side. The insert is made of a metallic, ceramic and/or organic material.

Description

Die Erfindung betrifft eine Maske zum Aufsetzen auf einen Motorblock beim thermischen Beschichten von darin eingelassenen Zylinderbohrungen gemäss dem Anspruch 1 sowie ein Verfahren zum thermischen Beschichten von Zylinderbohrungen von Motorblöcken unter Verwendung einer Maske gemäss dem Anspruch 13.The invention relates to a mask for mounting on an engine block during thermal Coating cylinder bores embedded therein according to the claim 1 and a method for the thermal coating of cylinder bores of engine blocks using a mask according to claim 13.

Bei der Herstellung von Verbrennungsmotoren finden heutzutage vermehrt Motorblöcke aus Leichtmetall Verwendung. Da Leichtmetall jedoch grundsätzlich keine hohe Abriebund Verschleissfestigkeit aufweist, werden die Zylinderbohrungen bzw. deren Wandungen mit einer Laufflächenschicht versehen oder es werden Laufbüchsen in die Zylinderbohrungen eingesetzt, welche ggf. auch noch mit einer Laufflächenschicht versehen werden. Das Aufbringen solcher Laufflächenschichten erfolgt zumeist mittels thermischen Beschichtungsverfahren, wobei sich insbesondere rotierende Plasmatrons zum Aufbringen der Schicht bewährt haben. Die Problematik beim Aufbringen solcher Laufflächenschichten besteht u.a. darin, dass die gesamte Lauffläche homogen ausgebildet sein soll. Da eine thermische Beschichtungsvorrichtung wie beispielsweise eine Plasmaspritzvorrichtung eine bestimmte Anlaufzeit braucht, bis ein homogener Beschichtungsstrahl erzeugt wird, muss die thermische Beschichtungsvorrichtung bereits vor dem Einführen in die Zylinderbohrung aktiviert werden, da ansonsten innerhalb der Zylinderbohrung eine unregelmässige Anfangsschicht entsteht. Beim Aktivieren der thermischen Beschichtungsvorrichtung ausserhalb der zu beschichtenden Zylinderbohrung besteht jedoch die Gefahr, dass bearbeitete Oberflächen -Passflächen- des Motorblocks durch den Beschichtungsstrahl in unerwünschter Weise "verschmutzt" werdenNowadays, engine blocks are increasingly used in the manufacture of internal combustion engines made of light metal. However, since light metal does not have a high level of abrasion Has wear resistance, the cylinder bores and their walls provided with a tread layer or liners in the cylinder bores used, which may also have a tread layer become. Such tread layers are usually applied by means of thermal Coating process, in particular rotating plasma cartridges Apply the layer have proven. The problem with applying such tread layers exists among other things in that the entire tread is homogeneous should be. As a thermal coating device such as a plasma spray device a certain start-up time takes until a homogeneous coating jet is generated, the thermal coating device must already the insertion into the cylinder bore are activated, otherwise within the cylinder bore an irregular starting layer is created. When activating the thermal Coating device outside the cylinder bore to be coated however, there is a risk that machined surfaces -fitting surfaces- of the engine block can be "dirty" by the coating jet in an undesirable manner

Um diesem Problem zu begegnen und den Motorblock vor einem sogenannten "Overspray" zu schützen, sind flache Abdeckmasken bekannt, die auf die Oberseite des Motorblocks aufgelegt werden. Damit sind jedoch nicht alle Probleme gelöst, da durch die ausserhalb der zu beschichtenden Zylinderbohrung aktivierte Beschichtungsvorrichtung auch die Umgebung in Mitleidenschaft gezogen werden kann.To counter this problem and the engine block in front of a so-called To protect "overspray", flat cover masks are known that are on the top of the Engine blocks are placed. However, this does not solve all of the problems because the coating device activated outside the cylinder bore to be coated the environment can also be affected.

Aus der DE 199 10 665 ist eine Abdeckschablone bekannt, die zum Aufsetzen auf das Zylinderkurbelwellengehäuse einer Verbrennungskraftmaschine bestimmt ist. Diese Abdeckschablone weist mehrere Durchgangsöffnungen auf, über welche ein Beschichtungswerkzeug in den Innenraum des Zylinderkurbelwellengehäuses eingeführt werden kann. Die Abdeckschablone ist so ausgebildet, dass auch sämtliche weiteren Bereiche des Zylinderkurbelwellengehäuses durch sie abgedeckt sind. Dazu besitzt die Abdeckschablone eine exakte plane Unterseite, die auf der bereits plan geschliffenen Zylinderkopffläche des Zylinderkurbelwellengehäuses aufzuliegen bestimmt ist. Es versteht sich, dass eine derartige Abdeckschablone teuer in der Herstellung ist. Ausserdem ist sie nicht universell einsetzbar, da sie an die Ausdehnung des Zylinderkurbelwellengehäuses angepasst werden muss, damit sämtliche weiteren Bereiche des Zylinderkurbelwellengehäuses abgedeckt sind. Zudem muss die Unterseite von Zeit zu Zeit nachbearbeitet werden, damit die Planheit erhalten bleibt. Dies ist insofern wichtig, da bei einer unebenen Unterseite die Gefahr besteht, dass beim Beschichten des Innenraums des Zylinderkurbelwellengehäuses über einen allfälligen Spalt zwischen der Zylinderkopffläche und der Abdeckschablone Beschichtungsmaterial auf die Zylinderkopffläche gelangen und diese verschmutzen kann.From DE 199 10 665 a cover template is known, which is to be placed on the Cylinder crankcase of an internal combustion engine is determined. This Cover template has several through openings, through which a coating tool be inserted into the interior of the cylinder crankcase can. The cover template is designed so that all other areas of the cylinder crankcase are covered by them. The cover template has this an exact flat underside, on the cylinder head surface that has already been ground flat of the cylinder crankcase is determined to lie. It understands is that such a cover template is expensive to manufacture. Also is they cannot be used universally because they are related to the expansion of the cylinder crankcase must be adjusted so that all other areas of the cylinder crankcase are covered. In addition, the underside has to be reworked from time to time to keep the flatness. This is important because an uneven bottom there is a risk that when coating the interior of the cylinder crankcase via a possible gap between the cylinder head surface and the cover template coating material on the cylinder head surface can reach and pollute them.

Aus dem Patent Abstract of Japan mit der Publikationsnummer 06065711 ist eine Maske bekannt, welche von der Unterseite eines Motorblocks her an das untere Ende der Zylinderlauffläche herangeführt wird. Die Maske ist zweiteilig ausgebildet, mit schrägen Trennflächen, damit die beiden Teile gegeneinander verschoben durch eine enge Stelle des Kurbelgehäuses hindurch in den Motorblock eingeführt werden können. Mit dieser Maske soll der Innenraum des Motorblocks, namentlich das Kurbelgehäuse, vor Verschmutzung beim thermischen Beschichten der Zylinderlaufflächen geschützt werden.One is from the patent Abstract of Japan with the publication number 06065711 Mask known, which from the bottom of an engine block to the lower end the cylinder tread is brought up. The mask is formed in two parts, with sloping parting surfaces so that the two parts are shifted against each other by a narrow place of the crankcase can be inserted into the engine block. With this mask, the interior of the engine block, namely the crankcase, protected against contamination during thermal coating of the cylinder liners become.

Die Aufgabe der Erfindung besteht nun darin, eine kostengünstige, mehrfach verwendbare und einfach anzuwendende Maske vorzuschlagen, welche ein Aktivieren der thermischen Beschichtungsvorrichtung ausserhalb der zu beschichtenden Zylinderbohrung ermöglicht, ohne dass der Motorblock oder die Umgebung durch Beschichtungspartikel verschmutzt wird, wobei die Maske nicht die gesamte Oberseite des Motorblocks abdecken soll und wobei eine hohe Qualität der aufgetragenen Schicht sichergestellt werden soll.The object of the invention is now an inexpensive, reusable and to propose an easy-to-use mask that activates the thermal Coating device outside the cylinder bore to be coated allows without the engine block or the environment due to coating particles is contaminated, whereby the mask does not cover the entire top of the engine block and should ensure a high quality of the applied layer should.

Diese Aufgabe wird durch eine Maske gelöst, welche die im Kennzeichen des Anspruchs 1 angeführten Merkmale aufweist.This object is achieved by a mask, which is in the characterizing part of the claim 1 features listed.

Ausgehend von den aus dem Stand der Technik bekannten Masken wird im vorliegenden Fall ein anderer Ansatz gewählt. Dazu wird eine im wesentlichen hohlzylindrisch ausgebildete und auf den Durchmesser der zu beschichtenden Zylinderbohrung abgestimmt Maske vorgeschlagen. Eine derartig ausgebildete Maske deckt nicht die gesamte Oberfläche des zu beschichtenden Motorblocks ab, sondern nur einen kreisringförmigen Bereich um die zu beschichtende Zylinderbohrung herum. Auf diesem kreisringförmigen Bereich um die zu beschichtende Zylinderbohrung herum liegt die Maske auf dem Motorblock auf. Eine derartige, hohlzylindrisch ausgebildete Maske hat u.a. den Vorteil, dass sie sehr einfach und günstig herzustellen ist und durch die kleine Auflagefläche eine sichere, spaltfreie Auflage der Maske auf dem Motorblock im Bereich der zu beschichtenden Zylinderbohrung erreicht werden kann.Based on the masks known from the prior art, the present invention In case another approach is chosen. For this purpose, one becomes essentially hollow cylindrical trained and matched to the diameter of the cylinder bore to be coated Mask suggested. Such a mask does not cover the whole Surface of the engine block to be coated, but only an annular Area around the cylinder bore to be coated. On this circular The mask lies in the area around the cylinder bore to be coated on the engine block. Such a hollow cylindrical mask has i.a. the advantage that it is very easy and inexpensive to manufacture and due to the small contact area a secure, gap-free support of the mask on the engine block in the area the cylinder bore to be coated can be reached.

Bevorzugte Ausführungsformen der Maske sind in den abhängigen Ansprüchen 2 bis 11 umschrieben, während im Anspruch 12 eine Maskenanordnung mit zumindest zwei nach einem der Ansprüche 1 bis 11 ausgebildeten Masken beansprucht wird.Preferred embodiments of the mask are in dependent claims 2 to 11 circumscribed, while in claim 12 a mask arrangement with at least two according to one of claims 1 to 11 trained masks is claimed.

Vorzugsweise ist die Höhe der Maske so gewählt, dass sie höher ist als die maximale vertikale Ausdehnung des Beschichtungsstrahls, wenn die Beschichtungsvorrichtung in die Maske eingeführt ist. Dadurch kann der Beschichtungskopf der Beschichtungsvorrichtung im nicht aktiven Zustand in die Maske eingeführt und darin aktiviert werden kann. Dadurch kann die Qualität des Beschichtungsvorgangs ganz allgemein sichergestellt werden, da keine nennenswerte Verschmutzung der Oberseite des Motorblocks durch den Beschichtungsstrahl entsteht, da keine Beschichtungspartikel aus der Maske austreten. Zum anderen wird eine regelmässige Beschichtung der Zylinderlauffläche erreicht, da der Beschichtungsvorgang ausserhalb der Zylinderbohrung gestartet wird und ein kontinuierlicher Schicht-Übergang von der Maske auf die Zylinderbohrung stattfinden kann.The height of the mask is preferably selected so that it is higher than the maximum vertical extension of the coating jet when the coating device is in the mask is inserted. This allows the coating head of the coating device can be inserted into the mask and activated in the inactive state can. This generally ensures the quality of the coating process because there is no significant contamination of the top of the engine block caused by the coating jet because there are no coating particles from the mask escape. On the other hand, there is a regular coating on the cylinder surface reached because the coating process is started outside the cylinder bore and there is a continuous layer transition from the mask to the cylinder bore can.

In den Ansprüchen 13 bis 19 werden zudem Verfahren zum thermischen Beschichten von Zylinderbohrungen von Motorblöcken unter Verwendung von erfindungsgemäss gestalteten Masken beansprucht.Processes for thermal coating are also described in claims 13 to 19 of cylinder bores of engine blocks using according to the invention designed masks.

Die Erfindung wird anhand von Zeichnungen näher erläutert. Dabei zeigt:

  • Fig. 1 einen Querschnitt durch einen Motorblock mit einem ersten Ausführungsbeispiel einer erfindungsgemässen Maske, und
  • Fig. 2 einen Querschnitt durch den Motorblock mit einem zweiten Ausführungsbeispiel einer erfindungsgemässen Maske.
  • Fig. 3 einen Querschnitt durch den Motorblock mit einem dritten Ausführungsbeispiel einer erfindungsgemässen Maske.
    • The invention is explained in more detail with reference to drawings. It shows:
  • 1 shows a cross section through an engine block with a first embodiment of a mask according to the invention, and
  • Fig. 2 shows a cross section through the engine block with a second embodiment of a mask according to the invention.
  • Fig. 3 shows a cross section through the engine block with a third embodiment of a mask according to the invention.

    • Aus der Figur 1 ist schematisch ein im Querschnitt dargestellter Motorblock 1 eines Reihenmotors, eine auf dessen Oberseite 7 aufgesetzte Maske 4 sowie der Vorderteil 8 einer Beschichtungsvorrichtung ersichtlich. Als Beschichtungsvorrichtung kann beispielsweise ein Plasmaspritzgerät mit einem rotierenden Beschichtungskopf 9 vorgesehen werden. Der Motorblock 1 ist mit mehreren Zylinderbohrungen versehen, wobei aus dieser Darstellung nur eine Zylinderbohrung 2 ersichtlich ist. Die auf der Oberseite des Motorblocks 1 koaxial zur Zylinderbohrung 2 fixierte Maske 4 besteht aus einem rohrförmigen Aussenteil 5 und einem im wesentlichen hohlzylindrisch ausgebildeten Einsatz 6. Die Maske 4 sowie deren Einsatz 6 sind auf den Durchmesser der zu beschichtenden Zylinderbohrung 2 abgestimmt. Im vorliegenden Fall ist der Innendurchmesser des Einsatzes 6 geringfügig grösser als der Durchmesser der Zylinderbohrung 2. Da der Einsatz 6 mitbeschichtet wird verändert sich dessen Innendurchmesser mit zunehmender Einsatzdauer; d. h. der Innendurchmesser des Einsatzes 6 nimmt mit zunehmender Einsatzdauer ab. Im vorliegenden Fall ist dieser Einsatz 6 als Verschleissteil konzipiert, welches üblicherweise nach einer bis zehn Anwendungen entfernt wird. Durch das Vorsehen eines Einsatzes 6 braucht jeweils nicht die ganze Maske 4 ausgewechselt zu werden, sondern nur der Einsatz 6. Dieser ist vorzugsweise aus einem metallischen, keramischen oder organischen Material oder einer Kombination daraus hergestellt. Die Höhe der Maske 4 beträgt im Normalfall zwischen 20 und 40 mm. Sie ist auf jeden Fall so gewählt, dass der Beschichtungsstrahl 10, wie dargestellt, vollumfänglich auf der Innenseite der Maske 4 auftrifft, wenn der Beschichtungskopf 9 in die Maske 4 eingeführt ist. Indem der Beschichtungskopf 9 zuerst in die Maske 4 eingeführt und erst danach aktiviert wird, kann sichergestellt werden, dass keine nennenswerte Verschmutzung der Umgebung durch Beschichtungspartikel entsteht. Nachdem die Beschichtungsvorrichtung aktiviert ist, kann der Kopf 9 langsam in die Zylinderbohrung 2 eingefahren werden. Dadurch wird die Zylinderbohrung 2 bzw. deren Wände 3 kontinuierlich beschichtet und es entsteht keine unregelmässige Anfangsschicht.An engine block 1 shown in cross section is schematically shown in FIG In-line engine, a mask 4 placed on the top 7 thereof and the front part 8 a coating device can be seen. As a coating device, for example a plasma spraying device with a rotating coating head 9 is provided become. The engine block 1 is provided with a plurality of cylinder bores this representation only a cylinder bore 2 can be seen. The one on the top of the Engine blocks 1, mask 4 fixed coaxially to cylinder bore 2, consists of a tubular Outer part 5 and an essentially hollow cylindrical insert 6. The mask 4 and its insert 6 are on the diameter of the to be coated Cylinder bore 2 matched. In the present case, the inside diameter of the Insert 6 slightly larger than the diameter of the cylinder bore 2. Since the Insert 6 is also coated, its inner diameter changes with increasing Useful life; d. H. the inner diameter of the insert 6 increases with increasing Period of use from. In the present case, this insert 6 is designed as a wearing part, which is usually removed after one to ten applications. By providing an insert 6 does not need to be replaced with the entire mask 4 be, but only the insert 6. This is preferably made of a metallic, ceramic or organic material or a combination thereof. The The height of the mask 4 is normally between 20 and 40 mm. It is definitely chosen so that the coating beam 10, as shown, on the full extent Inside of the mask 4 strikes when the coating head 9 is inserted into the mask 4 is. By first introducing the coating head 9 into the mask 4 and only afterwards is activated, it can be ensured that no significant contamination the environment is caused by coating particles. After the coater is activated, the head 9 can slowly retract into the cylinder bore 2 become. As a result, the cylinder bore 2 or its walls 3 becomes continuous coated and there is no irregular starting layer.

    Der Einsatz 6 ist vorzugsweise lose in den Aussenteil 5 eingesetzt, so dass er in vertikaler Richtung relativ zum Aussenteil 5 bewegbar ist. Um ein Herausfallen des Einsatzes 6 aus dem Aussenteil 5 zu verhindern, beispielsweise wenn letztere vom Motorblock 1 abgehoben wird, ist der Einsatz 6 mit einem Anschlag in Form einer auf der Oberseite umlaufenden Schulter 6a versehen. Der Einsatz 6 ist vorzugsweise etwas höher als der Aussenteil 5 ausgebildet, so dass er mit der Stirnseite auf dem Motorblock 1 aufliegt -und nicht mit der Schulter 6a auf dem Aussenteil 5 der Maske- wenn die Maske 6 auf den Motorblock 1 aufgesetzt ist. Dadurch wird zum einen eine spaltfreie Auflage des Einsatzes 6 auf dem Motorblock 1 sichergestellt und zum anderen kann der Einsatz 6 auf einfachste Weise ausgetauscht werden. Durch das Vorsehen unterschiedlicher Einsätze kann die Maske zudem sehr schnell an unterschiedliche Bohrungsdurchmesser angepasst werden. The insert 6 is preferably inserted loosely in the outer part 5 so that it is vertical Direction is movable relative to the outer part 5. To make the insert fall out 6 to prevent from the outer part 5, for example if the latter from the engine block 1 is lifted, the insert 6 with a stop in the form of a Provide top circumferential shoulder 6a. The insert 6 is preferably something formed higher than the outer part 5, so that it faces the engine block 1 rests - and not with the shoulder 6a on the outer part 5 of the mask - if the Mask 6 is placed on the engine block 1. On the one hand, this makes a gap-free Support of the insert 6 ensured on the engine block 1 and on the other hand, the Insert 6 can be exchanged in the simplest way. By providing different The mask can also be used very quickly on different bore diameters be adjusted.

    Die Maske 4 kann mit Positioniermitteln zum Ausrichten und/oder Fixieren gegenüber dem Motorblock 1 versehen werden. Dazu können beispielsweise Stifte oder Bolzen vorgesehen werden, welche in im Motorblock 1 eingelassene Bohrungen eingreifen. Sowohl die Positioniermittel wie auch die in den Motorblock 1 eingelassene Bohrungen sind im vorliegenden Fall jedoch nicht dargestellt.The mask 4 can be positioned with positioning means for aligning and / or fixing the engine block 1 are provided. For example, pins or bolts are provided, which engage in holes drilled in the engine block 1. Both the positioning means and the holes in the engine block 1 are not shown in the present case.

    Das Aufbringen der Schicht erfolgt vorzugsweise durch Plasmaspritzen, Hochgeschwindigkeitsflammspritzen, Lichbogenspritzen, Flammspritzen, Inertgasplasmaspritzen oder Inertgaslichbogenspritzen.The layer is preferably applied by plasma spraying, high-speed flame spraying, Arc spraying, flame spraying, inert gas plasma spraying or inert gas arc spraying.

    Fig. 2 zeigt einen Querschnitt durch den Motorblock mit einem zweiten Ausführungsbeispiel einer Maske 4a. Diese ist wiederum rohrförmig, d. h. im wesentlichen hohlzylindrisch ausgebildet, wobei kein Einsatz vorgesehen ist. Die Maske 4a ist derart konzipiert, dass die auf der Innenseite durch die Beschichtungsvorrichtung aufgetragenen Schichten 11, 12 bei Bedarf mechanisch entfernt werden können, beispielsweise durch ausdrehen. Das Entfernen der Schicht kann auch durch Strahlen mit abrasiven Pulvern wie beispielsweise Korund (Al2O3) oder Siliziumcarbid (SiC) erfolgen.Fig. 2 shows a cross section through the engine block with a second embodiment of a mask 4a. This is in turn tubular, that is to say essentially hollow-cylindrical, no insert being provided. The mask 4a is designed in such a way that the layers 11, 12 applied on the inside by the coating device can be mechanically removed if necessary, for example by unscrewing. The layer can also be removed by blasting with abrasive powders such as corundum (Al 2 O 3 ) or silicon carbide (SiC).

    Der Innendurchmesser der Maske 4a ist vorzugsweise etwas grösser als der Durchmesser der Zylinderbohrung 2, so dass die Schichten 11, 12 nicht komplett, d. h. bis auf den Innendurchmesser der Maske 4a entfernt werden müssen, was ohne Beschädigung bzw. Schwächung der Maske 4a ohnehin kaum möglich wäre. Auf das vorliegende Beispiel bezogen würde es genügen, wenn die innere Schicht 11 entfernt würde.The inner diameter of the mask 4a is preferably somewhat larger than the diameter the cylinder bore 2 so that the layers 11, 12 are not complete, i. H. until the inner diameter of the mask 4a must be removed, which without damage or weakening the mask 4a would hardly be possible anyway. To the present For example, it would suffice if the inner layer 11 were removed.

    Fig. 3 zeigt ein weiteres Ausführungsbeipsiel der Erfindung. In diesem Fall ist eine Maskenanordnung vorgesehen, die aus mehreren Masken besteht, welche durch einen Rahmen 13 miteinander verbunden sind. Der Abstand zwischen den einzelnen Masken ist dem Abstand zwischen Zylinderbohrungen des Motorblocks angepasst. Auch in diesem Fall liegt die einzelne Maske 4 bzw. deren Einsatz 6 im wesentlichen nur auf einer kreisringförmigen Fläche entlang der zu beschichtenden Zylinderbohrung 2 auf.3 shows a further exemplary embodiment of the invention. In this case there is a mask arrangement provided, which consists of several masks, which by a Frame 13 are interconnected. The distance between the individual masks is adjusted to the distance between the cylinder bores of the engine block. Also in this In this case, the individual mask 4 or its insert 6 is essentially only on one circular surface along the cylinder bore 2 to be coated.

    Vorzugsweise wird während des Beschichtungsvorgangs Luft durch die sich im aktiven Beschichtungsvorgang befindliche Zylinderbohrung geleitet, indem die Luft auf der Unterseite der Zylinderbohrung über nicht näher dargestellte Mittel abgesaugt wird. Ein Absaugen der Luft hat den Vorteil, dass die nicht auf die Wandung der Zylinderbohrung aufgetragenen Beschichtungspartikel zuverlässig nach unten abgeführt werden und sich nicht auf der Oberseite des Motroblocks niederschlagen können. Ausserdem kann durch eine gezielte Luftströmung der Gehalt von in der Schicht gebundenem Sauerstoff (Oxydanteil) definiert beeinflusst werden. Zum gezielten Beeinflussen der Schichteigenschaften kann es sich auch anbieten, anstelle von Luft beispielsweise Stickstoff oder ein anderes gasförmiges Medium durch die sich im aktiven Beschichtungsvorgang befindliche Zylinderbohrung zu leiten. Das Vorsehen einer erfindungsgemäss ausgebildeten Maske 4, 4a bringt diesbezüglich einen Vorteil mit sich, indem durch die als Verlängerung der Zylinderbohrung 2 wirkende Maske innerhalb der Zylinderbohrung 2 günstigere Strömungsbedingungen vorherrschen als ohne Maske, was sich letztlich wiederum in einer gleichmässigeren Qualität der aufgetragenen Schicht äussert.Air is preferably passed through during the coating process Coating process located cylinder bore directed by the air on the bottom the cylinder bore is sucked off by means not shown. On Sucking the air has the advantage that it is not on the wall of the cylinder bore applied coating particles are reliably discharged downwards and cannot be reflected on the top of the engine block. Also can through a targeted air flow the content of oxygen bound in the layer (Oxide content) can be influenced in a defined manner. To specifically influence the layer properties it can also be used instead of air, for example nitrogen or another gaseous medium due to the active coating process to guide the existing cylinder bore. The provision of a trained according to the invention Mask 4, 4a brings an advantage in this regard by using as an extension the cylinder bore 2 acting mask within the cylinder bore 2 more favorable flow conditions prevail than without a mask, which ultimately again expressed in a more uniform quality of the applied layer.

    Es versteht sich, dass die beiden gezeigten Ausführungsbeispiele nicht als abschliessend zu betrachten sind. Beispielsweise können auch Maskenanordnungen im Sinne einer Mehrfachmaske vorgesehen werden, da häufig zwei Beschichtungsvorrichtungen gleichzeitig im Einsatz stehen. Der Abstand zwischen den Masken wird dabei dem Abstand zwischen den Zylinderbohrungen des Motorblocks angepasst, wobei im allgemeinen nicht direkt nebeneinanderliegende Zylinderbohrungen gleichzeitig beschichtet werden, sondern bei einem vierzylindrigen Reihenmotor beispielsweise zuerst die Bohrungen 1 und 3 und danach die Bohrungen 2 und 4.It goes without saying that the two exemplary embodiments shown are not conclusive are to be considered. For example, mask arrangements can also be used a multiple mask can be provided since there are often two coating devices are in use at the same time. The distance between the masks becomes the distance adjusted between the cylinder bores of the engine block, generally cylinder bores not directly adjacent at the same time coated in a four-cylinder in-line engine, for example, the holes first 1 and 3 and then holes 2 and 4.

    Claims (20)

    Maske (4, 4a) zum Aufsetzen auf einen Motorblock (1) während des thermischen Beschichtens von darin eingelassenen Zylinderbohrungen (2), dadurch gekennzeichnet, dass die Maske (4, 4a) im wesentlichen hohlzylindrisch ausgebildet und auf den Durchmesser der zu beschichtenden Zylinderbohrung (2) abgestimmt ist.Mask (4, 4a) for placing on an engine block (1) during the thermal coating of cylinder bores (2) embedded therein, characterized in that the mask (4, 4a) is essentially hollow-cylindrical and the diameter of the cylinder bore to be coated ( 2) is coordinated. Maske (4) nach Anspruch 1, dadurch gekennzeichnet, dass sie mit einem rohrförmigen Aussenteil (5) und einem darin eingesetzten Einsatz (6) versehen ist.Mask (4) according to claim 1, characterized in that it is provided with a tubular outer part (5) and an insert (6) inserted therein. Maske (4) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Maske bzw. der Einsatz (6) im wesentlichen nur auf einer kreisringförmigen Fläche entlang der zu beschichtenden Zylinderbohrung(en) (2) aufzuliegen bestimmt ist.Mask (4) according to claim 1 or 2, characterized in that the mask or the insert (6) is essentially intended to lie only on an annular surface along the cylinder bore (s) (2) to be coated. Maske (4) nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Einsatz (6) den Aussenteil (5) auf der Unterseite überragt.Mask (4) according to claim 2 or 3, characterized in that the insert (6) projects beyond the outer part (5) on the underside. Maske (4) nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der Einsatz (6) lose in den Aussenteil 5 eingesetzt ist, so dass er in vertikaler Richtung relativ zum Aussenteil (5) bewegbar ist, wobei der Einsatz (6) mit einem Anschlag (6a) versehen ist, der ein Herausfallen des Einsatzes (6) aus dem Aussenteil (5) zu verhindern bestimmt ist.Mask (4) according to one of claims 2 to 4, characterized in that the insert (6) is loosely inserted into the outer part 5, so that it can be moved in the vertical direction relative to the outer part (5), the insert (6) is provided with a stop (6a) which is intended to prevent the insert (6) from falling out of the outer part (5). Maske (4) nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass der Einsatz (6) auf der Oberseite mit einer umlaufenden Schulter (6a) versehen ist.Mask (4) according to one of claims 2 to 5, characterized in that the insert (6) is provided on the top with a circumferential shoulder (6a). Maske (4) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Höhe der Maske (4) so gewählt ist, dass sie höher ist als die maximale vertikale Ausdehnung des Beschichtungsstrahls (10), wenn die Beschichtungskopf (9) in die Maske (4) eingeführt ist.Mask (4) according to one of the preceding claims, characterized in that the height of the mask (4) is selected so that it is higher than the maximum vertical extension of the coating jet (10) when the coating head (9) into the mask ( 4) is introduced. Maske (4) nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass der Einsatz (6) aus metallischen, keramischen oder organischen Materialien oder einer Kombination daraus hergestellt ist.Mask (4) according to one of claims 2 to 6, characterized in that the insert (6) is made of metallic, ceramic or organic materials or a combination thereof. Maske (4a) nach Anspruch 1, dadurch gekennzeichnet, dass sie derart ausgebildet ist, dass zumindest ein Teil der beim Beschichten der Zylinderbohrung (2) auf der Innenseite der Maske (4a) aufgetragenen Schicht(en) (11, 12) mechanisch entfernbar ist/sind. Mask (4a) according to Claim 1, characterized in that it is designed in such a way that at least part of the layer (s) (11, 12) applied to the inside of the mask (4a) when coating the cylinder bore (2) can be mechanically removed /are. Maske (4, 4a) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Maske (4, 4a) zwischen 10 und 60mm, vorzugsweise zwischen 20 und 40mm hoch ist.Mask (4, 4a) according to one of the preceding claims, characterized in that the mask (4, 4a) is between 10 and 60 mm, preferably between 20 and 40 mm high. Maske (4, 4a) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie mit Positioniermitteln zum Ausrichten und/oder Fixieren gegenüber dem Motorblock (1) versehen ist.Mask (4, 4a) according to one of the preceding claims, characterized in that it is provided with positioning means for aligning and / or fixing relative to the engine block (1). Maskenanordnung mit zumindest zwei nach einem der Ansprüche 1 bis 11 ausgebildeten Masken, wobei die Masken durch einen Rahmen (13) miteinander verbunden sind, und wobei der Abstand zwischen den einzelnen Masken dem Abstand zwischen Zylinderbohrungen des Motorblocks angepasst ist.Mask arrangement with at least two designed according to one of claims 1 to 11 Masks, the masks being connected to one another by a frame (13) and the distance between the individual masks is the distance between Cylinder bores of the engine block is adjusted. Verfahren zum thermischen Beschichten von Zylinderbohrungen (2) von Motorblöcken (1) unter Verwendung einer Maske (4, 4a) gemäss Anspruch 1, dadurch gekennzeichnet, dass der Beschichtungskopf (9) der thermischen Beschichtungsvorrichtung (8) im nicht aktiven Zustand soweit in die Maske (4, 4a) eingeführt wird, dass der Beschichtungsstrahl im ersten Moment nach dem Aktivieren vollumfänglich auf der Innenseite der Maske auftrifft.Method for the thermal coating of cylinder bores (2) of engine blocks (1) using a mask (4, 4a) according to claim 1, characterized in that the coating head (9) of the thermal coating device (8) in the non-active state so far into the mask (4, 4a) is introduced so that the coating beam strikes the inside of the mask in its entirety in the first moment after activation. Verfahren zum thermischen Beschichten von Zylinderbohrungen (2) von Motorblöcken (1) unter Verwendung einer Maske (4) gemäss Anspruch 2, dadurch gekennzeichnet, dass der Einsatz (6) der Maske (4) nach einer bis zehn Anwendungen durch einen neuen ersetzt wird.Method for the thermal coating of cylinder bores (2) of engine blocks (1) using a mask (4) according to claim 2, characterized in that the insert (6) of the mask (4) is replaced by a new one after one to ten applications. Verfahren zum thermischen Beschichten von Zylinderbohrungen (2) von Motorblöcken (1) unter Verwendung einer Maske (4a) gemäss Anspruch 9, dadurch gekennzeichnet, dass die auf der Innenseite der Maske (4a) aufgetragene Schicht bzw. die aufgetragenen Schichten (11, 12) nach einer bis zehn Anwendungen mechanisch zumindest teilweise entfernt wird/werden.Method for the thermal coating of cylinder bores (2) of engine blocks (1) using a mask (4a) according to claim 9, characterized in that the layer or layers (11, 12) applied to the inside of the mask (4a) is mechanically removed at least partially after one to ten applications. Verfahren nach Anspruch 15, dadurch gekennzeichnet, dass die auf der Innenseite der Maske (4a) aufgetragene Schicht bzw. die aufgetragene Schichten (11, 12) durch Strahlen mit abrasiven Pulvern, insbesondere Korund (Al2O3) oder Siliziumcarbid (SiC), entfernt wird/werden. Method according to Claim 15, characterized in that the layer or layers (11, 12) applied to the inside of the mask (4a) by blasting with abrasive powders, in particular corundum (Al 2 O 3 ) or silicon carbide (SiC), will be removed. Verfahren nach einem der Ansprüche 13 bis 16, dadurch gekennzeichnet, dass eine thermische Beschichtungsvorrichtung (8) mit drehbarem Beschichtungskopf (9) verwendet wird.Method according to one of claims 13 to 16, characterized in that a thermal coating device (8) with a rotatable coating head (9) is used. Verfahren nach einem der Ansprüche 13 bis 17, dadurch gekennzeichnet, dass Luft durch die sich im aktiven Beschichtungsvorgang befindliche Zylinderbohrung (2) geleitet wird.Method according to one of claims 13 to 17, characterized in that air is passed through the cylinder bore (2) which is in the active coating process. Verfahren nach einem der Ansprüche 13 bis 18, dadurch gekennzeichnet, dass Stickstoff oder ein anderes gasförmiges Medium durch die sich im aktiven Beschichtungsvorgang befindliche Zylinderbohrung (2) geleitet wird.Method according to one of claims 13 to 18, characterized in that nitrogen or another gaseous medium is passed through the cylinder bore (2) which is in the active coating process. Verfahren nach einem der Ansprüche 13 bis 19, dadurch gekennzeichnet, dass die Schicht(en) (11, 12) durch Plasmaspritzen, Hochgeschwindigkeitsflammspritzen, Lichtbogenspritzen, Flammspritzen, Inertgasplasmaspritzen oder Inertgaslichbogenspritzen aufgetragen wird/werden.Method according to one of claims 13 to 19, characterized in that the layer (s) (11, 12) is / are applied by plasma spraying, high-speed flame spraying, arc spraying, flame spraying, inert gas plasma spraying or inert gas arc spraying.
    EP02405024A 2001-05-15 2002-01-16 Mask member for placing on an engine body during the thermal coating of the internal cylinder bores and process using this masking member Expired - Lifetime EP1258540B1 (en)

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    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
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    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
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    TW200718805A (en) * 2005-11-07 2007-05-16 United Technologies Corp Coating methods and apparatus
    JP4742986B2 (en) * 2006-05-24 2011-08-10 トヨタ自動車株式会社 Masking jig for thermal spraying
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    DE102008051801A1 (en) * 2008-04-18 2009-10-22 Plasma Treat Gmbh Apparatus for treating an inner surface of a workpiece
    DE102008028965B4 (en) 2008-06-18 2020-01-16 Daimler Ag Mask for the thermal coating of a cylinder bore
    DE102008028961A1 (en) 2008-06-18 2009-01-08 Daimler Ag Method for treating mask used in thermal coating of cylinder bores in engine blocks comprises inserting activation mask with bores through its walls, allowing small areas of inner surface of main mask to be activated to improve adhesion
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    DE102013221375A1 (en) * 2013-10-22 2015-04-23 Ford Global Technologies, Llc Method for producing a coated bore surface, in particular a cylinder bore
    JP6167897B2 (en) * 2013-12-27 2017-07-26 トヨタ自動車株式会社 Masking for cylinder bore spraying
    JP6327179B2 (en) * 2015-03-06 2018-05-23 トヨタ自動車株式会社 Thermal spraying method
    DE102015111043A1 (en) * 2015-07-08 2017-01-12 Thyssenkrupp Ag Method and device for wetting the wall of a bore
    JP6420778B2 (en) * 2016-01-15 2018-11-07 株式会社スギノマシン Excess thermal spray coating removal device, shield plate, and shield unit

    Citations (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2601888A1 (en) * 1986-07-22 1988-01-29 Guezennec Jean Machine for coating the inner surface of containers
    US5573814A (en) 1995-10-30 1996-11-12 Ford Motor Company Masking cylinder bore extremities from internal thermal spraying
    JPH11106891A (en) * 1997-10-07 1999-04-20 Suzuki Motor Corp Metal thermal-spraying method
    JPH11172403A (en) * 1997-12-15 1999-06-29 Suzuki Motor Corp Masking jig and thermal spraying for cylinder
    DE19929247A1 (en) * 1998-12-18 2000-06-21 Volkswagen Ag Thermal coating of cavity surfaces, especially plasma spray coating of cylinder running surfaces of an i. c. engine crank-case, comprises directing an inert gas stream parallel to the surfaces being coated
    DE19910665A1 (en) 1998-12-18 2000-07-13 Volkswagen Ag Auxiliary device for the thermal coating of surfaces of an interior
    EP1077090A2 (en) * 1999-08-16 2001-02-21 Ford Global Technologies, Inc. Masking for engine blocks for thermally sprayed coating and method of masking same

    Patent Citations (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2601888A1 (en) * 1986-07-22 1988-01-29 Guezennec Jean Machine for coating the inner surface of containers
    US5573814A (en) 1995-10-30 1996-11-12 Ford Motor Company Masking cylinder bore extremities from internal thermal spraying
    JPH11106891A (en) * 1997-10-07 1999-04-20 Suzuki Motor Corp Metal thermal-spraying method
    JPH11172403A (en) * 1997-12-15 1999-06-29 Suzuki Motor Corp Masking jig and thermal spraying for cylinder
    DE19929247A1 (en) * 1998-12-18 2000-06-21 Volkswagen Ag Thermal coating of cavity surfaces, especially plasma spray coating of cylinder running surfaces of an i. c. engine crank-case, comprises directing an inert gas stream parallel to the surfaces being coated
    DE19910665A1 (en) 1998-12-18 2000-07-13 Volkswagen Ag Auxiliary device for the thermal coating of surfaces of an interior
    EP1077090A2 (en) * 1999-08-16 2001-02-21 Ford Global Technologies, Inc. Masking for engine blocks for thermally sprayed coating and method of masking same

    Non-Patent Citations (2)

    * Cited by examiner, † Cited by third party
    Title
    PATENT ABSTRACTS OF JAPAN vol. 1999, no. 09 30 July 1999 (1999-07-30) *
    PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11 30 September 1999 (1999-09-30) *

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2006074961A2 (en) * 2005-01-14 2006-07-20 Daimlerchrysler Ag Coating method and covering for removing overspray-adherences
    WO2006074961A3 (en) * 2005-01-14 2009-09-17 Daimlerchrysler Ag Coating method and covering for removing overspray-adherences
    WO2014195130A1 (en) * 2013-06-06 2014-12-11 Sulzer Metco Ag Method for coating a partial area of a workpiece and screening element

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    JP4230703B2 (en) 2009-02-25
    KR20020087342A (en) 2002-11-22
    EP1258540B1 (en) 2012-03-07
    DE20200739U1 (en) 2002-03-28
    ATE548478T1 (en) 2012-03-15
    CA2373001A1 (en) 2002-11-15
    KR100867241B1 (en) 2008-11-10
    US20020172769A1 (en) 2002-11-21
    CA2373001C (en) 2010-05-11
    JP2002339053A (en) 2002-11-27

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