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:
Dec. 04, 1979
Filed:
Jun. 07, 1978
Applicant:
Inventors:
Sven-Einar Stenkvist, Vesteras, SE;
Bjorn Widell, Vesteras, SE;
Assignee:
ASEA Aktiebolag, Vesteras, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 11 ; 13 / ;
Abstract
Iron-chromium alloys, such as stainless steels, are made in a direct arc DC electric arc furnace with a bath of molten steel scrap in the hearth and functioning as the anode with the arcing electrode cathodic, while feeding chromium-oxide to the bath at the arc spot on the bath's surface under conditions causing reduction of the oxide and addition of chromium to the bath.