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:
Apr. 14, 1981
Filed:
Mar. 21, 1980
Applicant:
Inventor:
Karl E Oberg, Viken, SE;
Assignee:
Scandinavian Lancers Aktiebolag, Hoganas, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ; C21C / ;
U.S. Cl.
CPC ...
75 53 ; 75 58 ;
Abstract
In an injection-metallurgical process performed in a ladle, lime is injected during a first phase after the deoxidation, removing the main part of the sulphur existing in the melt. During a second phase thereafter calcium-silicon, calcium-carbide or calcium-cyanamide is injected, which has a devised impact upon the morphology of the remaining inclusions. At the same time the flowability of the steel is improved, which is particularly important in the production of deep-drawing steels.