Mould for metal casting

Details Mould for metal casting Mould for metal casting

2005-03-08

2005-03-08

Lin, Kuang Y. (Department: 1725)

Metal founding

Process

Shaping a forming surface

C164S456000

Reexamination Certificate

active

06863113

ABSTRACT:
A process for forming a mould or a core for casting molten metal by machining (e.g. cutting or drilling) to the desired shape a bonded particulate refractory material wherein the shear strength of the refractory particles is less than the shear strength of the bonds between the particles. The preferred particulate is aluminosilicate microspherers (e.g. “flyash floaters”) and the binder is preferably based on silica (e.g. fumed silica/sodium hydroxide). The bonded particulate material is easily machined to form accurately dimensioned moulds or parts thereof.

REFERENCES:
patent: 4504314 (1985-03-01), Barker et al.
patent: 5632326 (1997-05-01), Gough
patent: 6286581 (2001-09-01), Gustafson
patent: 198 11 008 (2000-01-01), None
patent: 0 891 954 (1999-01-01), None
patent: 2 686 081 (1993-07-01), None

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