Title:
【発明の名称】核生成鋳造装置及び方法
Document Type and Number:
Japanese Patent JP2003523831
Kind Code:
A
Abstract:
Nucleated casting systems and methods comprise form castings under reduced pressure. The casting system forms a casting comprising a liquidus portion that receives the refined liquid metal and a solidified portion, the casting further comprising a fine-grain, homogeneous microstructure that is essentially oxide- and sulfide-free and segregation defect free. The casting system comprises a source of refined liquid metal, the refined liquid metal having oxides and sulfides refined out of the metal; a reduced pressure system that provides a reduced pressure to at least a portion of the casting system; and a nucleated casting system for forming the casting. The reduced pressure system provides a sufficient reduced pressure for reducing entrapped air from the liquidus portion of the casting.
Inventors:
Carter, william thomas, junior
Benz, Mark Gilbert
Zabara, Robert John
Bruce Alan, Knudsen
Benz, Mark Gilbert
Zabara, Robert John
Bruce Alan, Knudsen
Application Number:
JP2001561800A
Publication Date:
August 12, 2003
Filing Date:
March 30, 2000
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
B22D1/00; B22D7/00; B22D21/00; B22D21/06; B22D23/00; B22D23/10; B22D27/20; C22B9/04; C22B9/18; C22B9/193; (IPC1-7): B22D7/00; B22D1/00; B22D21/00; B22D21/06; B22D23/00; B22D27/20; C22B9/04; C22B9/18; C22B9/193
Domestic Patent References:
| JPS55165271A | 1980-12-23 | |||
| JPS5756148A | 1982-04-03 | |||
| JPS61296948A | 1986-12-27 | |||
| JPH05247550A | 1993-09-24 | |||
| JPS61255758A | 1986-11-13 |
Attorney, Agent or Firm:
Kenichi Matsumoto (2 outside)