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. 29, 1986
Filed:
Sep. 12, 1985
Subhash C Singhal, Murrysville Boro, PA (US);
David M Moon, Pittsburgh, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
This is a process for producing a ferroboron containing 0.5-20% silicon and up to 4.5% carbon. This process utilizes the silicon reduction of B.sub.2 O.sub.3 and avoids excessive losses due to volatilization of B.sub.2 O.sub.3. It also results in a ferroboron which is substantially free from aluminum impurity. The process uses a mixture, which includes an iron-containing constituent, a silicon containing constituent, and boric acid. Preferably a molten pool is prepared and controlled to a temperature of 1100-1550 (and preferably 1100.degree.-1450.degree. C.) prior to the addition of the boric acid. At least some of the silicon constituent can also be injected into the molten pool along with the boric acid.