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:
Aug. 16, 1977
Filed:
Apr. 22, 1975
Alexander A Zavaras, Athens, GR;
Robert Sobolewski, Streetsboro, OH (US);
Cecil B Griffith, North Royalton, OH (US);
Republic Steel Corporation, Cleveland, OH (US);
Abstract
In continuous casting of metal in an open-ended mold through which the metal is advanced in a first direction while undergoing peripheral solidification, and to which molten metal is supplied by a shroud that opens beneath the metal level, use of a shroud having an axial nozzle and terminating in a well beyond the nozzle, with lateral discharge ports between the well and the nozzle oriented to discharge the supplied metal at an obtuse angle to the first direction, assists in reducing the incidence of entrapped inclusions. Injection of inert gas into the flow of molten metal within the shroud promotes transport of inclusions in the second direction within the mold. The shroud and/or inert gas injection may be employed in combination with the provision of electromagnetically produced metal circulation in the mold causing flow of molten metal, in a second direction opposite to the first direction, along the solid-liquid interface within the mold for preventing entrapment of inclusions at the interface.