WEAR RESISTANT SLIDING PARTS

PURPOSE:To provide sliding parts for a piston ring, etc. having improved wear resistance by forming a phosphorus-contg. nickel plating layer dispersed therein with silicon nitride particles on the sliding surface of iron and steel products and subjecting the same to a hardening heat treatment. CONST...

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Bibliographische Detailangaben
Hauptverfasser:	SHINADA MANABU, SATOU SATORU
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BEARINGS BLASTING CHEMISTRY COMBUSTION ENGINES CYLINDERS CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING METALLURGY PISTONS PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS ROTARY BODIES OTHER THAN GEARING ELEMENTS SEALINGS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To provide sliding parts for a piston ring, etc. having improved wear resistance by forming a phosphorus-contg. nickel plating layer dispersed therein with silicon nitride particles on the sliding surface of iron and steel products and subjecting the same to a hardening heat treatment. CONSTITUTION:A nickel plating layer contg. 2-10wt% phosphorus is formed on at least the sliding surface of parts made of a ferrous heat resistant alloy, etc. Silicon nitride particles having 0.5-5mu average grain size are beforehand suspended in a plating bath to disperse 5-30% silicon nitride particles by volume into the plating layer to be formed. The phosphorus-contg. nickel plating layer is subjected to a heat treatment and is hardened to >=800mu Vickers hardness. The sliding parts exhibiting excellent wear resistance for a piston ring of an engine, etc. are thus formed.