Title:
INVESTMENT CASTING WITH IMPROVED MELT FEEDING
Document Type and Number:
WIPO Patent Application WO2002102532
Kind Code:
A3
Abstract:
Method and apparatus for casting of molten metallic material wherein the metallic material is introduced into a mold (10) and a pressure cap (30) then is clamped on the mold by a cam/cam follower mechanism (32) to form a seal such that pressurizing gas can be introduced into the mold on the molten metallic material therein. The pressure cap includes an inlet (62) for pressurizing gas, which is introduced on the molten metallic material in the mold after the pressure cap is sealed thereon. Application of gas pressure on the molten metallic material in the mold improves filling of mold with the molten material and reduces or eliminates non-fill voids in the solidified casting.
Inventors:
KROES CALVIN L
Application Number:
PCT/US2002/000412
Publication Date:
February 27, 2003
Filing Date:
January 08, 2002
Export Citation:
Assignee:
HOWMET RES CORP (US)
International Classes:
B22D27/13; (IPC1-7): B22D27/13
Foreign References:
| DE19932116A1 | 2001-01-18 | |||
| US6019158A | 2000-02-01 | |||
| US6070644A | 2000-06-06 | |||
| EP0933153A1 | 1999-08-04 |
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