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:
Oct. 25, 1977
Filed:
Jul. 14, 1976
Applicant:
Inventors:
Aldo Ramacciotti, Rome, IT;
Eugenio Repetto, Rome, IT;
Assignee:
Centro Sperimentale Metallurgico S.p.A., Rome, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164252 ; 13 / ;
Abstract
A hot-top for the production of ingots using an electroslag remelting process, comprises a ceramic hot-top having non-consumable electrodes embedded in the radially inner side walls thereof, the exposed surfaces of the electrodes comprising 5 to 50% of the total area of the hot-top inner surface. The electrodes extend parallel to the axis of the hot-top, from the top edge of the hot-top down at least 50% of the height thereof, and may be graphite or hollow water-cooled metal electrodes. In use, the electrodes contact not only the molten metal but also its superposed layer of slag.