Ferroalloy for inoculation of spherulitic graphite irons
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United States of America Patent
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Mar 31, 1998
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N/A
app pub date -
Jun 25, 1997
filing date -
Jun 25, 1996
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Abstract
A ferrosilicon-based ferroalloy for inoculation of spherulitic graphite irons containing (by weight) from 0.005% to 3% rare earths, 0.005% to 3% bismuth, lead and/or antimony, and 0.3% to 3% calcium, and is characterized by the fact that Si/Fe>2 and contains from 0.3 to 3% magnesium. The ferroalloy exhibits improved granulometric stability during storage.
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