Metal casting mold with bonded particle filter

Details Metal casting mold with bonded particle filter Metal casting mold with bonded particle filter

1975-11-21

1976-09-21

Baldwin, Robert D.

Metal founding

Means to shape metallic material

United particle type shaping surface

164134, 210263, B22C 908

Patent

active

039813525

ABSTRACT:
A system for the casting of metal comprising a filter through which the metal passes during pouring into a mold cavity. The filter is formed by providing a multiplicity of substantially spherical refractory particles. A ceramic binder is employed for securing the particles in a bonded assembly, the binder substantially completely coating the particles. Openings are defined between the adjoining coated particles to permit the flow of molten metal through the filter. The binder is of a type having an affinity for dross and slag constituents in the molten metal whereby the constituents are removed during passage of the metal through the filter. The refractory particles are preferably bonded into an assembly by processing which includes coating the particles with the binder material, introducing the coated particles into a mold and drying and firing the coated particles in the mold to achieve the desired bonded relationship.

REFERENCES:
patent: 3815661 (1974-06-01), Curran et al.

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