METHOD FOR MAKING VALVE SEATS OF POWDER MATERIAL FOR INTERNAL COMBUSTION ENGINES

METHOD FOR MAKING VALVE SEATS OF POWDER MATERIAL FOR INTERNAL COMBUSTION ENGINES

processes for making valves of internal combustion engines, namely manufacture of valve seats of powder material. SUBSTANCE: method comprises steps of mixing charge; molding it under pressure (600-900)MPa; sintering it at high temperature equal to 1150 C; calibrating at aftercompaction according to...

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Bibliographische Detailangaben
Hauptverfasser: KULESHOVA G.N, RUDENKO V.A, DZHAFAROV S.Z.-O
Format: Patent
Sprache:eng ; rus
Schlagworte:
CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:processes for making valves of internal combustion engines, namely manufacture of valve seats of powder material. SUBSTANCE: method comprises steps of mixing charge; molding it under pressure (600-900)MPa; sintering it at high temperature equal to 1150 C; calibrating at aftercompaction according to double-axis deformation mode; performing heat treatment by quenching and tempering. EFFECT: possibility for reducing number of technological operations of annealing, aftercompaction and then turning in lathe along inner diameter at pressing-in valve seat to head of engine.