EP1670964A2 - Ventilsitzringe aus co oder co/mo-basislegierungen und deren herstellung - Google Patents
Ventilsitzringe aus co oder co/mo-basislegierungen und deren herstellungInfo
- Publication number
- EP1670964A2 EP1670964A2 EP04741186A EP04741186A EP1670964A2 EP 1670964 A2 EP1670964 A2 EP 1670964A2 EP 04741186 A EP04741186 A EP 04741186A EP 04741186 A EP04741186 A EP 04741186A EP 1670964 A2 EP1670964 A2 EP 1670964A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- wire
- valve seat
- weight
- cylinder head
- content
- 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- Withdrawn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
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/044—Built-up welding on three-dimensional surfaces
- B23K9/046—Built-up welding on three-dimensional surfaces on surfaces of revolution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/044—Built-up welding on three-dimensional surfaces
- B23K9/046—Built-up welding on three-dimensional surfaces on surfaces of revolution
- B23K9/048—Built-up welding on three-dimensional surfaces on surfaces of revolution on cylindrical surfaces
-
- 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
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
-
- 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
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3046—Co as the principal constituent
-
- 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
-
- 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
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49298—Poppet or I.C. engine valve or valve seat making
Definitions
- valve seat rings from the very hard and wear-resistant Co and / or Co / Mo base alloys, the valve seat rings not being individually manufactured in a known manner and fitting into the cylinder heads, but rather being deposited directly onto the base material of the cylinder head , Arc wire spraying (LDS) is used as the deposition process, the starting material not the alloy but the components used which form the desired alloy during the deposition process.
- LDS Arc wire spraying
- Alloys at least one element from the group Cr, W, Ni, Fe, Si, Mn in an amount of 0.1 to 20% by weight. Furthermore, the impurities customary for the corresponding metals can be present in traces.
- the nominal composition (% by weight) of particularly preferred Co-based alloy is as follows: C: 0.1 to 3% Cr: 5 to 30% W: 0 to 20%
- the injection molded valve seat rings according to the invention are significantly lighter or less thick. In this way, savings in the relatively expensive raw materials Co and Mo can be realized in an advantageous manner.
- the individual components are fed through one or more metallic cored wires and melted in an arc in a known manner.
- the individual components are mixed and the preferred alloys are formed.
- This co-rich component usually forms the sheath of a filler wire filled with powdery fillers. If necessary, however, it can also be expedient to use a composite wire which is composed of a Co-rich matrix and disperse further components. In contrast to cored wire with co-sheath, the composite wire has metallic Co or Co alloy distributed over its entire cross-section. The vast majority of the others Alloy components are encased by the co-matrix or at least partially in contact with it.
- the sheath of the cored wire consists of a Co / Fe alloy with an Fe content of 1 to 3% and a core of filler material powder.
- two wires, a filler or composite wire and a solid wire are used, the solid wire being formed from at least one of the components forming the filler wire.
- This solid wire is preferably made of Ni or Cr, or their alloys.
- a preferred method of building up the cored wires according to the invention is based on co-foils or co-strips. The powdery components and possibly a solid wire are applied to the Co-tape, rolled up parallel to the longitudinal axis, crimped and drawn out to form the cored wire.
- the wire can be constructed as a solid wire or also as a filler or composite wire.
- a protective gas is preferably used as the process gas of the arc wire spraying.
- N 2 or Ar is particularly preferably used here.
- the valve seat rings or coatings made of Co and / or Co / Mo base alloys applied by means of the coating method according to the invention have good adhesive properties on non-pretreated cylinder heads.
- valve seat rings or layers are possible that can withstand the required thermal and mechanical stress even with thin layers.
- a particular advantage of the method according to the invention lies in the fact that very thick layers can be produced, right up to quasi self-supporting components. These are comparatively high
- the method according to the invention is therefore also suitable, for example, for filling grooves, cutouts or bores in the underground or for leveling uneven surfaces.
- the sheath of the cored wire consisted of a Co / Fe alloy with an Fe content of 3% and a core made of metal powder.
- the metal powder contained 80% by weight of Mo, Si and other powder particles.
- the particle size of the powder particles used was in the range from approx. 3 to 100 ⁇ .
- the wire diameter of both wires was 3.6 mm.
- the wires were fed to a conventional wire spraying machine and melted in an arc under nitrogen.
- the deposition was carried out on a steel surface roughened by means of sandblasting with A1 2 0 3 .
- FIG. 1 The micrograph of a section of the valve seat ring thus separated can be seen in FIG. 1.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10334703A DE10334703A1 (de) | 2003-07-30 | 2003-07-30 | Ventilsitzringe aus Co oder Co/Mo-Basislegierungen und deren Herstellung |
PCT/EP2004/008137 WO2005012590A2 (de) | 2003-07-30 | 2004-07-21 | Ventilsitzringe aus co oder co/mo-basislegierungen und deren herstellung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1670964A2 true EP1670964A2 (de) | 2006-06-21 |
Family
ID=34088930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04741186A Withdrawn EP1670964A2 (de) | 2003-07-30 | 2004-07-21 | Ventilsitzringe aus co oder co/mo-basislegierungen und deren herstellung |
Country Status (5)
Country | Link |
---|---|
US (1) | US7401586B2 (de) |
EP (1) | EP1670964A2 (de) |
JP (1) | JP2007533842A (de) |
DE (1) | DE10334703A1 (de) |
WO (1) | WO2005012590A2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10340320B4 (de) * | 2003-08-29 | 2005-11-17 | Daimlerchrysler Ag | Mehrteiliges zusammengesetztes Ventil für eine Brennkraftmaschine |
DE102004060538B3 (de) * | 2004-12-16 | 2006-03-16 | Daimlerchrysler Ag | Verfahren zur Bildung von Hartmetallschichten und Zylinderkopf für Brennkraftmaschinen mit Ventilsitzringen aus Hartmetall |
JP5320992B2 (ja) * | 2008-11-11 | 2013-10-23 | 新日鐵住金株式会社 | 高耐性バーナーチップ |
US20120043490A1 (en) * | 2010-08-19 | 2012-02-23 | Caterpillar Inc. | Pre-oxidation of engine valves and seat inserts for improved life |
JP5632358B2 (ja) * | 2011-12-22 | 2014-11-26 | 新日本溶業株式会社 | 硬化肉盛用溶接材料とそれによる肉盛溶接層を有する機械部品 |
DE102013210895A1 (de) | 2013-06-11 | 2014-12-11 | Mahle International Gmbh | Verfahren zur Herstellung von warmbeständigen und verschleißfesten Formteilen, insbesondere Motorkomponenten |
FR3090427B1 (fr) * | 2018-12-21 | 2023-11-10 | Safran | Procede de fabrication d’un noyau |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01138095A (ja) * | 1987-11-26 | 1989-05-30 | Sumitomo Metal Ind Ltd | 曲げ変形性に優れた細径線材 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3542663A1 (de) * | 1985-12-03 | 1987-06-04 | Boehler Ag | Schweisszusatzwerkstoff und verfahren zur herstellung desselben |
US4724819A (en) * | 1987-01-23 | 1988-02-16 | Precision National Plating Services, Inc. | Cylinder liner reconditioning process and cylinder liner produced thereby |
DE58908200D1 (de) * | 1988-02-25 | 1994-09-22 | Trw Motorkomponenten Gmbh & Co | Hartstofflegierung. |
US5857950A (en) * | 1996-11-06 | 1999-01-12 | Pamarco Incorporated | Fluid metering roll |
US5915743A (en) * | 1997-06-30 | 1999-06-29 | The Boeing Company | Metal spray tool repair system |
US5983495A (en) * | 1997-12-29 | 1999-11-16 | Ford Global Technologies, Inc. | Method of making spray-formed inserts |
DE19841618C2 (de) * | 1998-09-11 | 2000-12-14 | Daimler Chrysler Ag | Thermisch gespritzter, verschleißfester Komfort - Synchronisierungsbelag |
US6485678B1 (en) * | 2000-06-20 | 2002-11-26 | Winsert Technologies, Inc. | Wear-resistant iron base alloys |
BR0208927A (pt) * | 2001-05-10 | 2004-04-27 | Parker Hannifin Corp | Fabricação de invólucro de componentes eletrônicos que possuem uma camada de blindagem metalizada |
-
2003
- 2003-07-30 DE DE10334703A patent/DE10334703A1/de not_active Withdrawn
-
2004
- 2004-07-21 WO PCT/EP2004/008137 patent/WO2005012590A2/de active Application Filing
- 2004-07-21 JP JP2006521471A patent/JP2007533842A/ja not_active Withdrawn
- 2004-07-21 EP EP04741186A patent/EP1670964A2/de not_active Withdrawn
- 2004-07-21 US US10/566,624 patent/US7401586B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01138095A (ja) * | 1987-11-26 | 1989-05-30 | Sumitomo Metal Ind Ltd | 曲げ変形性に優れた細径線材 |
Also Published As
Publication number | Publication date |
---|---|
WO2005012590A2 (de) | 2005-02-10 |
WO2005012590A3 (de) | 2005-03-24 |
US20070193546A1 (en) | 2007-08-23 |
US7401586B2 (en) | 2008-07-22 |
DE10334703A1 (de) | 2005-02-24 |
JP2007533842A (ja) | 2007-11-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE10046956C2 (de) | Thermisch aufgetragene Beschichtung für Kolbenringe aus mechanisch legierten Pulvern | |
EP2753722B1 (de) | Cermetpulver | |
DE3689512T2 (de) | Molybdän, Kupfer und Bor enthaltende Eisenlegierung. | |
DE69403413T2 (de) | Pulver zum Gebrauch beim thermischen Spritzen | |
WO2014114715A1 (de) | Thermisches spritzpulver für stark beanspruchte gleitsysteme | |
DE602004011631T2 (de) | Verschleissfeste legierung auf kupferbasis | |
DE102006042950B4 (de) | Teilchendispersions-Kupferlegierung und Verfahren zur Herstellung derselben | |
EP2596144B1 (de) | Kolbenring mit thermisch gespritzter beschichtung und herstellungsverfahren davon | |
EP2209621B1 (de) | Verfahren zur herstellung eines gleitlagerelementes mit einer bismuthaltigen gleitschicht, und gleitlagerelement | |
DE69803332T2 (de) | Hartmolybdänlegierung, verschliessfeste Legierung und Verfahren zu ihrer Herstellung | |
DE102013220040A1 (de) | Gesinterte Spritzpulver auf Basis von Molybdänkarbid | |
EP3409801B1 (de) | Pulvermetallurgisch hergestellter, hartstoffpartikel enthaltender verbundwerkstoff, verwendung eines verbundwerkstoffs und verfahren zur herstellung eines bauteils aus einem verbundwerkstoff | |
DE60214976T2 (de) | Verschleissfeste kupferbasislegierung | |
WO2008152104A1 (de) | Kolbenring | |
DE102013201104A1 (de) | Verfahren zur Herstellung von Chromnitrid-haltigen Spritzpulvern | |
DE102006031043A1 (de) | Mit Lagermaterial beschichtetes Gleitelement und Verfahren zu dessen Herstellung | |
DE10061750B4 (de) | Wolframhaltige Verschleißschutzschicht für Kolbenringe | |
EP1670964A2 (de) | Ventilsitzringe aus co oder co/mo-basislegierungen und deren herstellung | |
DE19508069C1 (de) | Auslaßventil für eine Diesel-Hubkolben-Brennkraftmaschine | |
DE10061749C2 (de) | Kolbenring für Brennkraftmaschinen | |
DE10041974B4 (de) | Beschichtungsverfahren für Zylinderköpfe und Verwendung | |
EP2840166B1 (de) | Intermetallische Verschleißschutzschicht für Titan-Werkstoffe | |
DE10061751C1 (de) | Verschleißschutzschicht für Kolbenringe | |
DE102004060538B3 (de) | Verfahren zur Bildung von Hartmetallschichten und Zylinderkopf für Brennkraftmaschinen mit Ventilsitzringen aus Hartmetall | |
DE3315920C1 (de) | Verfahren zur Herstellung einer Hartlegierung auf Nickelbasis |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
|
17P | Request for examination filed |
Effective date: 20060110 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SAGEL, ALEXANDER DR. Inventor name: ESSWEIN, ERNST Inventor name: HAUG, TILMANN Inventor name: GRAU, STEFAN |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: DAIMLERCHRYSLER AG |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: DAIMLER AG |
|
17Q | First examination report despatched |
Effective date: 20080225 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RTI1 | Title (correction) |
Free format text: METHOD OF MANUFACTURING OF VALVE SEAT RINGS MADE FROM CO/MO BASED ALLOYS |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
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 |
|
18D | Application deemed to be withdrawn |
Effective date: 20110201 |