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. 18, 1978
Filed:
Feb. 22, 1977
Applicant:
Inventors:
Hans Gruner, Duisburg, DE;
Hans Schrewe, Duisburg, DE;
Gerd Diederich, Angermund, DE;
Claus-Dieter Haufe, Duisburg, DE;
Fritz-Peter Pleschiutschnigg, Angermund, DE;
Assignee:
Mannesmann Aktiengesellschaft, Dusseldorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164 56 ; 164154 ; 75 58 ; 75 59 ;
Abstract
Molten steel pouring from a ladle into a tundish is surrounded by a vessel which is pressurized to maintain an excess pressure of an inert gas and/or a gas or vapor of a material that treats the steel, e.g., for deoxidizing, desulfurizing and/or other cleansing action. The excess pressure per se inhibits any reoxidation. Reactant material is fed to the chamber at a rate to maintain the excess pressure and/or to ensure sufficient presence of reacting material commensurate with the amount of steel passing through.