Moulds for metal casting and sleeves containing filters for use

Details Moulds for metal casting and sleeves containing filters for use Moulds for metal casting and sleeves containing filters for use

1989-01-18

1990-05-29

Godici, Nicholas P.

Metal founding

Means to shape metallic material

United particle type shaping surface

164134, 164358, B22C 908

Patent

active

049287460

ABSTRACT:
A mould (61) for metal casting has a mould cavity (62) and a sprue (63) communicating directly with the mould cavity (62) and located in the sprue (63) a sleeve (64) of refractory material having a cellular ceramic filter (65) fixed therein. The mould, which has no running system apart from the sprue, may be a sand mould or a metal die for producing castings by gravity or low pressure diecasting. The cellular ceramic filter may be a honeycomb type of structure having cells which extend between two outer surfaces of the filter or a structure having interconnecting cells such as a ceramic foam.

REFERENCES:
patent: 1657952 (1928-01-01), Zoda
patent: 2150510 (1939-03-01), LeJeune
patent: 3433293 (1969-03-01), Ponzar
patent: 3893917 (1975-07-01), Pryor et al.
patent: 4154289 (1979-05-01), Jeanneret
patent: 4469161 (1984-09-01), Higginbotham et al.
patent: 4574869 (1986-03-01), Trinkl et al.
patent: 4591383 (1986-05-01), McGarry et al.
patent: 4697632 (1987-10-01), Lirones
patent: 4708326 (1987-11-01), Brockmeyer et al.

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