EP3161177A1 - A coating system and method - Google Patents
A coating system and methodInfo
- Publication number
- EP3161177A1 EP3161177A1 EP15770981.7A EP15770981A EP3161177A1 EP 3161177 A1 EP3161177 A1 EP 3161177A1 EP 15770981 A EP15770981 A EP 15770981A EP 3161177 A1 EP3161177 A1 EP 3161177A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- top layer
- coated
- coating system
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
-
- 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
- C23C4/129—Flame 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
- C23C4/134—Plasma spraying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
- F01L3/04—Coated valve members or valve-seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2301/00—Using particular materials
- F01L2301/02—Using ceramic materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2303/00—Manufacturing of components used in valve arrangements
- F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
Definitions
- the present invention relates to reduction of passage of the useful heat generated as a result of combustion to the surrounding components and the cooling system, improving fuel consumption by increasing thermal efficiency, and increasing exhaust gas temperatures by means of coating the parts of the diesel engine members, which are exposed to combustion and/or combustion gases, by thermal barrier ceramic based materials.
- bond layer powder as the lower layer, strengthening the mechanical bond between the main substrate and the ceramic coating, and decreasing the differences in the thermal expansion coefficient
- the new surface that is produced is used in this form.
- the said application is based on coating the powder material by thermal spray method.
- the powder material As a result of both the low wear resistance of the powder material and the porous inner structure, which is the main necessity of thermal barrier coating and heat management applications, there is a risk of detachment of particles and/or powders from the final surface that is obtained. There is a risk of substantial damages if the pollutants generated in the combustion chamber of the diesel engines reach the turbocharger via the exhaust gas.
- Japanese patent document no. JPS5453628 (A) one of the applications known in the art, discloses about increasing the hardness of the surface of an engine member and enhancing the wear resistance by laser beams.
- the surfaces of engine members such as a piston ring, valve seat, valve, cam shaft or crank shaft are irradiated with laser beam. Wear resistance of the irradiated portion is enhanced by methods such as hardening, glazing etc.
- Chinese patent document no. CN101270970 (A), an application in the state of the art, discloses about coating engine members by the method of thermal atomization.
- the ring groove of a two-stroke diesel engine is metal coated by atomization.
- Metal coating is applied to the top and bottom faces (21, 22) of the ring groove.
- German patent document no. DE19956622 (Al), an application in the state of the art, discloses about coating piston rings (3) and/or pistons and/or cylinder liners of two-stroke diesel engines.
- the coating comprises aluminum bronze and is applied to the base material.
- the coating (4) is applied onto the engine members by means of thermal spray method.
- the objective of the present invention is to provide a coating system and method which enables to obtain a completely smooth and nonporous coating surface.
- Another objective of the present invention is to provide a coating system and method which enables to obtain the top surface smoothening process to be at a very thin wall thickness and enables the coating to be realized without damaging the inner structure and thermal barrier feature of the coating.
- a further objective of the present invention is to provide a coating system and method which enables to enhance wear resistance of the coating as a result of obtaining a smooth surface, and to prevent the risk of detachment of a powder and/or particle within the combustion chamber and the damages that might occur in the engine members as a result of this risk.
- Another objective of the present invention is to provide a coating system and method which enables to prevent fuel and/or oil absorption thanks to the nonporous and smooth surface.
- Figure 1. is a perspective view where the surfaces to be coated are shown.
- Figure 2. is a front sectional view of the coating system.
- Figure 3. is a schematic view of the coating system.
- the coating system (1) of the present invention which is applied to the surfaces of the diesel engines' cylinder head, exhaust/intake valves, exhaust/intake ports and/or pistons that are exposed to combustion gases, basically comprises
- the coating system (1) of the present invention is applied to the surfaces of the diesel engines' cylinder head, exhaust/intake valves, exhaust/intake ports and/or pistons that are exposed to combustion gases.
- the bond layer (3) applied onto the surface to be coated (2) facilitates bonding of the ceramic based top layer (4) on the surface.
- laser glazing step is added to the thermal barrier coating method (100) process.
- the coating method (100) developed to fulfill the objective of the invention comprises the steps of
- the top layer (4) obtained in the coating method (100) of the present invention has a very low wear resistance due to the porous inner structure of the thermal barrier coatings and the powder metallurgy that is used.
- the thermal barrier coated top layer (4) is subjected to laser glazing process in order to prevent potential damages that might occur in the engine members as a result of detachment of powder and/or particles from the coated top layer (4).
- the ceramic based top layer (4) is melted by a few microns of wall thickness from the surface by using a laser system.
- the top layer (4) that is obtained has a completely smooth, nonporous and solid structure.
- thermal barrier coating method (100) the damages that may be caused by the particles detached from the coating surface due to high cylinder pressure and mechanical contact on the surrounding components particularly the turbocharger blades are prevented.
- a smooth and nonporous coating top layer (4) is obtained by solidifying the top layer (4) upon the laser glazing application after the thermal barrier coating application.
- top layer (4) smoothening process is performed at a very thin wall thickness without damaging the inner structure and the thermal barrier feature of the coating.
- the coating system (1) and method (100) of the present invention relates to reduction of passage of the useful heat generated as a result of combustion to the surrounding components and the cooling system, improving fuel consumption by increasing thermal efficiency, and increasing exhaust gas temperatures by means of coating the parts of the cylinder head, exhaust/intake valves, exhaust/intake ports and/or pistons in diesel engines, which are exposed to combustion and/or combustion gases, by thermal barrier ceramic based materials.
- a completely smooth top layer (4) with high wear resistance is obtained as a result of the laser glazing process applied to the coating top layer (4), and thus detachment of powder and/or particles from the surface to be coated (2) (which is a potential problem) and the engine damages that might result especially in parts such as turbochargers are prevented.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR2014/07630A TR201407630A2 (en) | 2014-06-30 | 2014-06-30 | A coating system and method |
PCT/TR2015/000268 WO2016003378A1 (en) | 2014-06-30 | 2015-06-26 | A coating system and method |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3161177A1 true EP3161177A1 (en) | 2017-05-03 |
Family
ID=54199282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15770981.7A Withdrawn EP3161177A1 (en) | 2014-06-30 | 2015-06-26 | A coating system and method |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3161177A1 (en) |
TR (1) | TR201407630A2 (en) |
WO (1) | WO2016003378A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB202207827D0 (en) * | 2022-05-27 | 2022-07-13 | Rolls Royce Plc | Method of forming protective coating and coated article comprising protective coating |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5453628A (en) | 1977-10-06 | 1979-04-27 | Toshiba Corp | Engine member |
DE19956622A1 (en) | 1999-10-29 | 2000-05-25 | Man B & W Diesel As | Machine component, especially a piston ring, piston and/or cylinder liner of a large two-stroke diesel engine, is produced by thermally spraying an aluminum bronze-containing composite coating onto a sliding surface region |
CN101270970B (en) | 2008-05-05 | 2010-06-23 | 力帆实业(集团)股份有限公司 | Motorcycle frame assembly checking tool |
US20100055479A1 (en) * | 2008-08-29 | 2010-03-04 | Caterpillar Inc. | Coating for a combustion chamber defining component |
-
2014
- 2014-06-30 TR TR2014/07630A patent/TR201407630A2/en unknown
-
2015
- 2015-06-26 WO PCT/TR2015/000268 patent/WO2016003378A1/en active Application Filing
- 2015-06-26 EP EP15770981.7A patent/EP3161177A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2016003378A1 (en) | 2016-01-07 |
TR201407630A2 (en) | 2016-01-21 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20161220 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: UNAL, DENIZ CAN Inventor name: MANAV, DEMIRHAN Inventor name: HURPEKLI, MERSIN |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20170818 |