DOUGLAS JONATHAN LEE
Medical Practice in Pittsburgh, PA
License number
Pennsylvania MD028771E
Category
Medicine
Type
Medical Physician and Surgeon
Address
Address
Pittsburgh, PA 15232
Personal information
See more information about DOUGLAS JONATHAN LEE at radaris.comName
Address
Phone
511 Stokes Ave, East Stroudsburg, PA 18301
Professional information
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Calcium-Slag Additive For Steel Desulfurization And Method For Making Same
Calcium-Slag Additive For Steel Desulfurization And Method For Making Same
US Patent:
4444590, Apr 24, 1984
Filed:
Mar 28, 1983
Appl. No.:
6/479129
Inventors:
Douglas C. Lee - Pittsburgh PA
Leon A. Luyckx - New Castle PA
Leon A. Luyckx - New Castle PA
Assignee:
ESM Incorporated - Valencia PA
International Classification:
C22B 910
US Classification:
75257
Abstract:
A calcium-slag additive for use in desulfurization of molten steel contains, by weight, 10-25 percent calcium metal, 30-50 percent fluorspar, 10-30 percent aluminum oxide and 10-30 percent calcium oxide. The calcium-slag is produced by forming a molten mixture of lime, fluorspar and aluminum in a graphite-lined induction furnace and heating the mixture to 1300. degree. -1600. degree. C. to form a calcium-aluminum alloy phase floating on a calcium-slag phase, and tapping the calcium-slag from the bottom of the furnace and rapidly cooling the same to form a solid calcium-slag material.
Mold Protection Device For The Bottom Of Ingot Molds
Mold Protection Device For The Bottom Of Ingot Molds
US Patent:
4090551, May 23, 1978
Filed:
Jan 17, 1977
Appl. No.:
5/760203
Inventors:
Douglas C. Lee - Pittsburgh PA
Leonard P. Ziemkiewicz - Lower Burrell PA
Victor P. Ardito - Lower Burrell PA
Alex J. Greco - New Kensington PA
Leonard P. Ziemkiewicz - Lower Burrell PA
Victor P. Ardito - Lower Burrell PA
Alex J. Greco - New Kensington PA
Assignee:
Allegheny Ludlum Industries, Inc. - Pittsburgh PA
International Classification:
B22D 706, B22D 4110
US Classification:
164137
Abstract:
A ceramic refractory mold protection device for an ingot mold having a flat top surface with a hole therethrough includes a shank portion which fits in the hole an integral head portion which is adapted to rest on the flat top surface and cover the impact area onto which steel is teemed. The head portion extends between 1 and 3 inches from the shank and is between 3/4 and 2 inches high. After the steel is poured and the ingot stripped from the mold, the protective device is removed from the mold and replaced by a new one for the next pour.