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Patent Searching and Data


Title:
METHOD AND APPARATUS FOR METAL CASTING
Document Type and Number:
WIPO Patent Application WO2006044179
Kind Code:
A3
Abstract:
A technique for pressurized or differential pressure casting according to the present disclosure provides a riser tube filter formed of ceramic foam having a specific gravity lower than the molten metal to be cast. A riser tube filter according to the present invention may float in and/or on the molten metal within the riser tube and smooth the flow of molten metal within the riser tube simultaneously filtering the metal. As the molten metal is depressurized, a riser tube filter according to the present disclosure will travel back down the riser tube engaging the walls of the riser tube and minimizing the surface of molten metal in contact with the air or other gas. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Inventors:
LIANG FU SHUN (US)
Application Number:
PCT/US2005/035556
Publication Date:
June 08, 2006
Filing Date:
October 03, 2005
Export Citation:
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Assignee:
LIANG FU SHUN (US)
International Classes:
B22D1/00; B22D23/00; B22D35/00; B22D37/00; B22D39/00; C22B9/02
Foreign References:
US4961455A1990-10-09
US5336295A1994-08-09
US6485541B12002-11-26
US5673902A1997-10-07
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