Compacted graphite cast iron alloy and its method of making
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United States of America Patent
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Jun 8, 2004
Grant Date -
N/A
app pub date -
Jan 3, 2001
filing date -
Jul 3, 1998
priority date (Note) -
Expired
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Abstract
A process for producing a compacted graphite iron (CGI) article, comprising the steps of: (a) providing a CGI base iron having a composition comprising, in weight percentages, about 3.2 to 3.8 total C, 2.8 to 4.0 Si and the balance at least Fe and incidental impurities; (b) treating, controlling and casting the alloy in a manner known per se; (c) allowing the cast component to cool in the mould to a temperature of at least 775.degree. C.; (d) cleaning the casting in a manner known per se and machining the casting to produce a finished article.
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