The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 1984
Filed:
Sep. 15, 1982
James E Wells, III, Kenmore, NY (US);
Henry F Linebarger, Tonawanda, NY (US);
Thomas K McCluhan, N. Tonawanda, NY (US);
Elkem Metals Company, Pittsburgh, PA (US);
Abstract
This invention relates to a new and unique alloy composition and to the method of treating molten cast iron with such alloy to produce ductile and compacted graphite cast irons. The alloy is a predominately iron alloy having the essential elements by weight of from about 0.1 to about 10% silicon, from about 0.5 to about 4.0% magnesium, from about 0.1 to about 10.0% nickel and optionally from about 0.1 to about 2.0% cerium, and/or other rare earth elements. The alloy may comprise from about 0.1 to about 10.0% silicon, from about 0.5 to about 4.0% magnesium, from about 0.1 to about 10.0% nickel, optionally from about 0.1 to about 2.0% cerium and/or other rare earth elements, from about 0.5 to about 6.5% carbon and the balance iron. Small amounts of calcium, barium or stronium and trace elements customarily found in conventional raw materials used in producing the alloy may also be present. The characteristics of the alloy make it possible to establish a ready supply of treated molten iron in the foundry in holding vessels with a selected chemical composition at a given temperature. It also makes possible semicontinuous and continuous casting of ductile and compacted graphite cast irons.