Agent for the treatment of cast iron melts
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United States of America Patent
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May 11, 1993
Grant Date -
N/A
app pub date -
Apr 1, 1992
filing date -
Jul 20, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is an agent based on ferrosilicon for the treatment of cast iron melts before treatment with spheroidal graphite-inducing elements, especially magnesium, wherein, as additive elements, the agent additionally contains calcium, aluminum, manganese, zirconium, cerium and lanthanum. The content of iron plus silicon is at least 75% by weight with reference to the weight of all components and the elements zirconium, cerium and manganese additively are at least 5% by weight of the agent. The present invention also provides a process for the production of this agent, as well as a process for treating cast iron melts therewith.
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