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. 28, 1990
Filed:
Jul. 03, 1989
Applicant:
Inventors:
Joseph W Tommaney, Lockport, NY (US);
Peter S Andolina, Cheektowaga, NY (US);
Reginald C Buri, Gasport, NY (US);
Assignee:
Allegheny Ludlum Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
373 68 ; 373 42 ; 373 77 ; 75 1024 ;
Abstract
A method and apparatus is provided for controlling the atmosphere above the bath of an electroslag remelting furnace, including sealing the atmosphere of the furnace directly above the crucible by employing a shell secured to the crucible and a shroud secured between the shell and the movable furnace ram to encapsulate the atmosphere, and analyzing the oxygen content of the atmosphere and controlling the amount of oxygen therein by introducing an inert gas in the atmosphere.