Patent application number | Description | Published |
20110081540 | WEAR-RESISTANT COMPONENT - The present invention pertains to wear-resistant components for internal combustion engines, particularly piston rings, that feature a wear protection layer with iron base alloy on their surface that is subjected to wear and are characterized in that the components are manufactured of a coating powder by means of high-velocity flame spraying (HVOF) and the coating is single-phase, wherein the proportions of the elements Fe, Cr, B and C in the wear protection layer are 45-75 wt.-% Fe, 15-40 wt.-% Cr, 1-10 wt.-% B and 0.1-5 wt.-% C. The present invention furthermore pertains to a method for manufacturing wear-resistant components for internal combustion engines, particularly piston rings, according to the present invention. | 04-07-2011 |
20110101621 | WEAR-RESISTANT COMPONENT - The present invention pertains to wear-resistant components for internal combustion engines, particularly piston rings, especiallly piston rings that feature a wear protection layer with iron base alloy on their surface that is subjected to wear and are characterized in that they are manufactured of a coating powder by means of high-velocity flame spraying (HVOF), wherein the coating is single-phase and comprises the elements Fe, Cr, V and C, and wherein VC forms mixed crystals and also leads to a dispersion strengthening. The present invention furthermore pertains to a method for manufacturing wear-resistant components for internal combustion engines, particularly piston rings, according to the present invention. | 05-05-2011 |
20110109048 | METHOD AND DEVICE FOR PRODUCING A DISPERSION-HARDENED OBJECT THAT CONTAINS CARBIDE NANOPARTICLES - A method for producing a dispersion-hardened object which contains carbide nanoparticles comprises producing an object by means of a thermal spraying method, wherein downstream of the combustion chamber, the gas flow is supplied by means of a carrier gas with at least one precursor which reacts in the gas flow to form a carbide, or carbide nanoparticles are supplied via an external nanoparticle generator which is subject to a thermal load. It allows the production of a dispersion-hardened object such as, for example, a component for an internal combustion engine, for example a piston ring. The method is carried out by means of a thermal spraying device which, downstream of the combustion chamber, besides at least one line for supplying a thermal spray powder, further comprises at least one line for supplying a precursor by means of a carrier gas. | 05-12-2011 |
20120126487 | SLIDING MEMBER HAVING A THERMALLY SPRAYED COATING AND METHOD FOR PRODUCING SAME - A sliding member for an internal combustion engine includes: a substrate and a coating obtainable by thermally spraying a powder, having the element proportions of 55 to 75 wt % of chromium, Cr; 3 to 10 wt % of silicon, Si; 18 to 35 wt % of nickel, Ni; 0.1 to 2 wt % of molybdenum, Mo; 0.1 to 3 wt % of carbon, C; 0.5 to 2 wt % of boron, B; and 0 to 3 wt % of iron, Fe. | 05-24-2012 |
20120205875 | SLIDING ELEMENT, IN PARTICULAR A PISTON RING, HAVING A COATING - The invention relates to a sliding element, such as a piston ring, having a coating on at least one running surface, which comprises, from the inside out, an adhesive layer ( | 08-16-2012 |
20120306158 | SLIDING ELEMENT HAVING ADJUSTABLE PROPERTIES - A sliding element, particularly a piston ring for an internal combustion engine, includes a substrate, and a wear-protection layer, obtained by thermal spraying of a powder comprising the element proportions
| 12-06-2012 |
20130004756 | SLIDING ELEMENT, IN PARTICULAR A PISTON RING, AND METHOD FOR COATING A SLIDING ELEMENT - A sliding element, in particular a piston ring, preferably made of cast iron or steel, has a coating which has a plurality of layers of CrN ( | 01-03-2013 |
20130042845 | SLIDING ELEMENT, IN PARTICULAR PISTON RING, AND COMBINATION OF A SLIDING ELEMENT WITH A MATING RUNNING ELEMENT - The invention relates to a sliding element, in particular a piston ring, preferably made of cast iron or steel, comprising a coating having a CrN, an Me(C | 02-21-2013 |
20130084031 | SLIDING ELEMENT WITH DLC COATING - A sliding element, and in particular a piston ring, is provided with a DLC coating on a substrate of the sliding element. A material softer than DLC is embedded into the surface of the DLC coating with which the sliding element will come into contact with a sliding partner, against which the sliding element will slide. | 04-04-2013 |
20130168906 | Helical Compression Spring for an Oil Scraper Ring of a Piston in an Internal Combustion Engine and Method for Coating a Helical Compression Spring - A helical compression spring, preferably of steel, in particular CrSi steel or CrNi steel, comprises a coating which has at least one a-C:H: Me coating or a plurality of layers of CrN ( | 07-04-2013 |
20130181409 | PISTON RING HAVING A THERMALLY SPRAYED COATING AND METHOD FOR PRODUCING SAME - A method for producing a piston ring for an internal combustion engine includes providing, a substrate and applying a coating by means of thermal spraying of a powder including solid lubricants on the substrate, having the elemental proportions of 15-30% by weight of iron, Fe; 15-30% by weight tungsten, W; 25-35% by weight of chromium, Cr; 10-35% by weight of nickel, Ni; 1-5% by weight of molybdenum, Mo; 0.2-3% by weight of aluminum, Al; 3-20% by weight of copper, Cu; 1-10% by weight of carbon, C; 0.1-2% by weight of sulfur, S; and 0.1-2% by weight of silicon, Si. The resultant piston ring and coating are also provided. | 07-18-2013 |
20130192458 | METHOD FOR PRODUCING A PISTON RING HAVING EMBEDDED PARTICLES - A sliding element, in particular a piston ring or a cylinder liner, comprising at least one a-C:H:Me layer, where Me is germanium and silicon, having a layer thickness of 10-40 μm, is provided. | 08-01-2013 |
20130316156 | SLIDING ELEMENT, IN PARTICULAR A PISTON RING, HAVING A COATING - The invention relates to a sliding element, such as a piston ring, comprising a coating on at least one surface comprising, form inside to outside, a bonding layer, a metal DLC layer preferably containing tungsten, and a metal-free DLC layer doped with nitrogen at least in some regions, wherein said sliding element is characterized in that the nitrogen content in the metal-free DLC layer is graduated. | 11-28-2013 |
20140284882 | WEAR PROTECTION LAYER FOR PISTON RINGS - The present invention relates to a wear-resistant layer, which is preferably used on piston rings for internal combustion engines. The wear-resistant layer comprises: 15-25% by weight iron (Fe), 10-25% by weight tungsten carbide (WC), 30-40% by weight chromium (Cr), 10-25% by weight nickel (Ni), 10-25% by weight molybdenum (Mo), 1-10% by weight carbon (C), 0.1-2% by weight silicon (Si), wherein Cr is present in elemental form and/or as a carbide in the form of Cr | 09-25-2014 |