VERMICULAR CAST IRON ALLOY AND INTERNAL COMBUSTION ENGINE HEAD

The present invention relates to the technological field of cast iron alloys for automotive and similar applications. Problem to be solved: Presently, structural parts of internal combustion engines are made of gray cast iron alloys that rarely have a tensile strength limit range greater than 350 MP...

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Bibliographische Detailangaben
Hauptverfasser:	MOLINAR, Hector Mancha, RAMOS, Andre Koerich, GUESSER, Wilson Luiz, CABEZAS, Carlos de Souza
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING CHEMISTRY COMBUSTION ENGINES CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES FERROUS OR NON-FERROUS ALLOYS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	The present invention relates to the technological field of cast iron alloys for automotive and similar applications. Problem to be solved: Presently, structural parts of internal combustion engines are made of gray cast iron alloys that rarely have a tensile strength limit range greater than 350 MPa or vermicular cast iron alloys that do not remain stable at high temperatures. Solution of the problem: It is disclosed a vermicular cast iron alloy that, due to the addition of amounts of Molybdenum, Copper and Tin, with Hot Resistance Factor from 0.5 to 1.7% (HRF=3×(% Mo)+1×(% Sn)+0.25×(% Cu)) achieves a tensile strength limit of 500 to 550 MPa at room temperature and up to 300° C., and a tensile strength limit of 430 to 450 MPa at 400° C.