专利名称：Process for the production of vermicular
cast iron
发明人：Sundaresa V. Subramanian,Debabrata S.
Ghosh,John M. Gray,David A. R. Kay,Gary R.Purdy
申请号：US05/907005申请日：19780518公开号：US04227924A公开日：19801014
摘要：Process for producing vermicular cast iron comprising: (i) forming a neareutectic melt having a sulfur content preferably less than about 0. 025% by weight; (ii)admixing at least one rare earth-containing additive with said melt to form stable rareearth oxysulfides thereby reducing and maintaining the Henrian sulfur activity in the meltat between about 0. 004 and 0.035; and (iii) thereafter, allowing said melt to solidify.
申请人：MICROALLOYING INTERNATIONAL, INC.
代理人：Barry Kramer
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