PRODUCTION OF PISTON FOR INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To improve strength and to prevent a failure, etc., by decreasing the volumetric rate of the carbon short fibers on a surface part while assuring the wear resistance and coagulation resistance of a composite member. SOLUTION: This process for producing a piston comprises formin...

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Hauptverfasser:	TOMONO YUTAKA, FUJITA JUNICHI, SASAKI MASATO, KOTAKE SEIICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY COMBUSTION ENGINES CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES FERROUS OR NON-FERROUS ALLOYS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES ORMATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHERTHAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve strength and to prevent a failure, etc., by decreasing the volumetric rate of the carbon short fibers on a surface part while assuring the wear resistance and coagulation resistance of a composite member. SOLUTION: This process for producing a piston comprises forming the inner peripheral wall of the top ring groove of a piston body of the composite member 11 formed by combining the carbon short fibers 13 and potassium titanate whiskers 14 with an aluminum alloy material and mixing the carbon short fibers 13 at a ratio of 30 to 60% (vol.%) with the entire part of the composite member 11. A perform body 15 consisting of the carbon shot fibers 13 and the potassium titanate whiskers 14 is previously molded and the molding is heated at about 400 to 550 deg.C in the atm. to burn the carbon short fibers of the surface part Z.