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:
May. 23, 1978
Filed:
Mar. 04, 1977
Applicant:
Inventors:
Lucien Antoine, 42490 Fraisses, FR;
Pierre Leroy, 78100 Saint-Germain-en-Laye, FR;
Jean Saleil, 42100 Saint-Etienne, FR;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 12 ; 751305 ;
Abstract
In a process of manufacturing an alloy steel, particularly stainless steel, in an electric arc furnace, in a first stage the furnace charge is brought to a molten state, in a second stage ferro-alloy in divided form is continuously supplied to the molten charge and simultaneously a refining fluid is blown into the charge, and in a third stage the molten charge is decarburized, if necessary, to give the required carbon content, and chromium oxide in the slag is reduced.