Other

Seisuke Sugahara

Toshiyuki Kikuchi

Shigenori Nishiuchi

Satoru Yamamoto

Yutaka Kawano

The present invention relates to stainless spheroidal carbide cast iron material is such: comprises iron (Fe) as its main component, C 0.6&tilde;4.0% and V 4&tilde;15% as its necessary components, P 0.01&tilde;0.15%, S 0.01&tilde;0.05% Al 0.05&tilde;1.0%, and Mg 0.01&tilde;0.2% as gas (hydrogen) bubble assistants, and Si 0.2&tilde;4.5%, Cr 13&tilde;30%, Mn 0.2&tilde;3.0%, and Ni and/or Co 4&tilde;15% as anticorrosion matrix formers, and according to the case of necessary, alloy elements 0.1&tilde;1.5% of one or more kinds of Ca, Ba, Sr and rare-earth metal as a gas (hydrogen) bubble stabilizer 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 1673&tilde;1973 K which is the bubbling reaction temperature, and spheroidal vanadium carbide of a covalent bond is crystallized inside of the spheroidal space, wherein just spheroidal vanadium carbide is crystallized at far colder melting temperature than former by means of compounding with the specific element as bubble assistants, and which has special characteristics such as corrosion-resistance, heat-resistance, abrasion-resistance, toughness and processing ability.

Stainless spheroidal carbide cast iron material

The present invention relates to stainless spheroidal carbide cast iron is such: comprises Fe as its main component;, C 0.6&tilde;4.0% and V 4&tilde;15% as its necessary components, P 0.01&tilde;0.15%, S 0.01&tilde;0.05%, and Al 0.05&tilde;1.0% as bubble assistants, and Ni 4&tilde;15%, Si 0.2&tilde;4.5%, Cr 13&tilde;30%, and Mn 0.2&tilde;1.5% 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 1950&tilde;2073 K which is the bubbling reaction temperature, and spheroidal vanadium carbide of a covalent bond is crystallized inside of the spheroidal space, which has special characteristics such as corrosion-resistance, heat-resistance, abrasion-resistance, toughness and processing ability. Such improving its characteristics such as heat-resistance and corrosion-resistance can be applied within a wide areas of industries such as chemical industry, machinery, shipping and petrochemical industry which efficiency and functions are getting high in accordance with the development of the industries.

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Osaka, Japan

Seisuke Sugahara