Process for producing spheroidal-graphite cast iron, and spheroidal-graphite cast iron member obtained from said spheroidal-graphite cast iron
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United States of America Patent
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Dec 6, 2016
Grant Date -
Nov 27, 2014
app pub date -
Dec 19, 2012
filing date -
Dec 22, 2011
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Abstract
A process for producing spheroidal graphite cast iron includes a spheroidization treatment, an inoculant treatment and a pouring inoculation treatment. A molten iron is subjected to the spheroidization treatment using a spheroidizing agent of an Fe—Si—Mg—Ca-based alloy which contains a given amount of Ba and contains substantially no rare-earth element.
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