Patent ID: 6406563
Filing Date: 2002-06-18
Classification: C22C

Abstract:
Stainless spheroidal carbide cast iron:comprising of Fe as its main component, C 0.6Ëœ4.0% and V 4Ëœ15% as its necessary components, P 0.01Ëœ0.15%, S 0.01Ëœ0.05%, and Al 0.05Ëœ1.0% as bubble assistants, and Ni 4Ëœ15%, Si 0.2Ëœ4.5%, Cr 13Ëœ30%, and Mn 0.2Ëœ1.5% as anticorrosion matrix formers in weight %; produced by the process that minute spheroidal space of gas (hydrogen) bubble is dispersed substantially equally into molten metal positively by high temperature melting at 1950Ëœ2073 K which is the bubbling reaction temperature, and spheroidal vanadium carbide of a covalent bond is crystallized inside of the spheroidal space.