Casting mold and method for manufacturing the same

Details Casting mold and method for manufacturing the same Casting mold and method for manufacturing the same

2006-02-21

2006-02-21

Lin, Kuang Y. (Department: 1725)

Metal founding

Process

Shaping a forming surface

C164S527000

Reexamination Certificate

active

07000680

ABSTRACT:
A casting mold which is molded by heating mulled sand including a mixture of refractory molding sand particles, an inorganic water soluble binder and water, wherein the inorganic water soluble binder is made of a combination of a sulfate compound such as magnesium sulfate heptahydrate and a borate compound such as sodium tetraborate decahydrate. The casting mold is formed by baking the mulled sand in such a manner that at least part of the sulfate compound retains water of crystallization therein and the borate compound is once fused and then cured.

REFERENCES:
patent: 2004/0050524 (2004-03-01), Grassi et al.
patent: 53-119724 (1978-10-01), None
patent: 11-285777 (1999-10-01), None

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