Cojinete resistente a la abrasión de una bomba de combustible de tipo motor

• Main Authors: MARUYAMA, TSUNEO, SHIMIZU, TERUO
• Format: Patent
• Language: Spanish
• Published: 14.02.2013
• Subjects: ALLOYS; BEARINGS; BLASTING; CASTING; CHEMISTRY; COMBUSTION ENGINES; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FERROUS OR NON-FERROUS ALLOYS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MECHANICAL ENGINEERING; METALLURGY; PERFORMING OPERATIONS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; POWDER METALLURGY; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; THERMAL INSULATION IN GENERAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS; WORKING METALLIC POWDER

Un cojinete resistente al desgaste de una bomba de combustible de tipo motor que comprende:un cuerpo sinterizado de polvos compactados que tienen una composición mezclada que incluye entre 1 y5% de grafito, entre 2 y 9% de aleación de Cu-P que contiene entre 5 y 10% de P, una aleación de Cu-Nique contiene entre 21 y 26% de Ni, y el resto, en % en peso; caracterizado porque el cuerpo sinterizado fabricado de un metal de sinterización basado en Cu-Ni tieneuna estructura en la que los poros están dispersos en un material de base de partículas de aleación de Cu-Ni a una porosidad en un intervalo entre 8 y 18%, y los componentes P y grafito libre están distribuidos enun límite entre las partículas de aleación de Cu-Ni y en los poros, respectivamente. A wear resistant bearing of a motor-type fuel pump includes a sintered body of compacted powders having a blended composition which is composed of 1 to 5% of graphite, 2 to 9% of Cu-P alloy containing 5 to 10% of P, Cu-Ni alloy containing 21 to 26% of Ni, and the balance, in % by weight. The sintered body made of a Cu-Ni based sintering metal has a structure in which pores are dispersed on a basis material of Cu-Ni alloy particles at a porosity within a range of 8 to 18%, and P components and free graphite are distributed on a boundary between the Cu-Ni alloy particles and in the pores, respectively.