Janel K Browning

US Patent:

62142488, Apr 10, 2001

Filed:

Nov 12, 1998

Appl. No.:

9/190070

Inventors:

Janel Koca Browning - El Cajon CA
Melvin Robert Jackson - Niskayuna NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

B31D 300
B23P 1500

US Classification:

216 56

Abstract:

A method of forming an internal channel within an article, such as a cooling channel in an air-cooled blade, vane, shroud, combustor or duct of a gas turbine engine. The method generally entails forming a substrate to have a groove recessed in its surface. A solid member is then placed in the groove, with the solid member being sized and configured to only partially fill the groove so that a void remains in the groove. The void is then filled with a particulate material so that the groove is completely filled. A layer is then deposited on the surface of the substrate and over the solid member and the particulate material in the groove, after which at least the solid member is removed from the groove to form the channel in the substrate beneath the layer.

US Patent:

58090576, Sep 15, 1998

Filed:

Sep 11, 1996

Appl. No.:

8/712038

Inventors:

Mark Gilbert Benz - Burnt Hills NY
William Thomas Carter - Galway NY
Paul Leonard Dupree - Scotia NY
Howard Roscoe Hart - Schenectady NY
Bruce Alan Knudsen - Amsterdam NY
Janel Koca Browning - Clifton Park NY
Russell Scott Miller - Ballston Spa NY
Robert John Zabala - Schenectady NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

F27D 300

US Classification:

373142

Abstract:

A melt guide is provided for enclosing a bottom of an electroslag refining crucible containing a melt of electroslag refined metal. A base plate is sized to have a perimeter to engage the crucible bottom for attachment thereto. The base plate includes an upper surface for defining with the crucible a reservoir for receiving the melt, and a lower surface spaced therebelow. A central drain extends through the base plate for draining by gravity the melt from the reservoir. A plurality of circumferentially spaced apart slots extend radially outwardly from the drain toward the base plate perimeter and extend vertically through the base plate. Induction heating coils are mounted below the base plate lower surface for heating the melt through the slots. The base plate may take various forms including a flat plate, with or without a cooperating and removable insert.