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:
Nov. 27, 1984
Filed:
Jun. 02, 1982
Tohei Ototani, Tokyo, JP;
Metal Research Corporation, Tokyo, JP;
Abstract
The disclosed method of producing an iron-, nickel-, or cobalt-base alloy with low contents of oxygen, sulphur, and nitrogen comprises steps of melting the alloy in a crucible lined with a basic refractory containing at least 40% of calcium oxide; and adding at least one additive and not more than 5% by weight of at least one flux, based on said alloy, the additive being selected from the group consisting of aluminum, aluminum alloys, silicon, silicon alloys, titanium, zirconium, niobium, boron, and rare earth elements, the flux being selected from the group consisting of oxides, silicates, carbonates, and halides of alkali and alkaline earth metals, and aluminum oxide, so that the resultant molten alloy contains 0.005 to 7.0% of aluminum, 0.005 to 7.0% of silicon, and 0.0005 to 0.005% of calcium.