APERFEICOAMENTO EM PROCESSO PARA FAZER UM MATERIAL COMPOSTO PARA MANCAL

A process for making a bimetallic bearing material comprising a hard metal backing strip having a leaded copper or leaded bronze bearing lining tenaciously bonded to at least one face thereof which includes the steps of applying a layer of a prealloyed metal powder of a controlled composition and pa...

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Bibliographische Detailangaben
Hauptverfasser:	GALLATIN V, LEBRASSE G
Format:	Patent
Sprache:	por
Schlagworte:	ALLOYS BEARINGS BLASTING CASTING CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL 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 INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS POWDER METALLURGY ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	A process for making a bimetallic bearing material comprising a hard metal backing strip having a leaded copper or leaded bronze bearing lining tenaciously bonded to at least one face thereof which includes the steps of applying a layer of a prealloyed metal powder of a controlled composition and particle size on one face of the backing strip, sintering the composite material in a reducing atmosphere at a temperature ranging from 1450 DEG F to 1600 DEG F, cooling the sintered composite strip to a temperature of 1000 DEG F to 1200 DEG F and densifying the composite strip by roll compaction to 100% of theoretical density in a manner to effect further sintering and enhancement of the bond strength between the backing material and lining. The compacted strip thereafter is allowed to cool to a temperature below about 800 DEG F in a nonoxidizing protective environment whereafter it can be fabricated into various bearing components, such as thrust washers, bushings, shell bearings and the like.