GEORGE ALBERT RATZ
Engineers in Pittsburgh, PA
License number
Pennsylvania PE004433E
Category
Engineers
Type
Professional Engineer
Address
Address
Pittsburgh, PA 15228
Professional information
Method Of Pouring Steel
US Patent:
4813580, Mar 21, 1989
Filed:
Sep 17, 1987
Appl. No.:
7/097694
Inventors:
Anthony J. DeArdo - Pittsburgh PA
Calixto I. Garcia - Pittsburgh PA
George A. Ratz - Pittsburgh PA
Calixto I. Garcia - Pittsburgh PA
George A. Ratz - Pittsburgh PA
International Classification:
B22D 4100
US Classification:
222590
Abstract:
Build-up on the surface of a refractory body receiving molten metal is eliminated or reduced by making at least a portion of a material that can be electrically heated to at least about 1150. degree. C. , such as an alkaline-earth doped lanthanum chromite. When the surface is that of a nozzle or shroud, an electric current is supplied to heat the material around the opening in the nozzle or shroud to at least about 1150. degree. C.