Process for preparing sand cores and molds

Details Process for preparing sand cores and molds Process for preparing sand cores and molds

1983-07-11

1984-08-14

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

B22C 900

Patent

active

044651163

ABSTRACT:
In combination, a binder for a foundry aggregate and a hardener therefor, as the binder, polyvinylammonium phosphate and, as the hardener, a linear alkali polyphosphate, ammonium polyphosphate, a source of polyvalent metal cations, orthophosphoric acid, or mixtures thereof.

REFERENCES:
patent: 3250756 (1966-05-01), Bergmeister

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