Consumable pattern coating for lost foam castings

Details Consumable pattern coating for lost foam castings Consumable pattern coating for lost foam castings

1997-04-11

1999-09-14

Batten, Jr., J. Reed

Metal founding

Process

Shaping a forming surface

164 45, 164249, 106 3822, B22C 702, B22C 904

Patent

active

059507020

ABSTRACT:
The coated pattern is formed from a consumable pattern, preferably polystyrene, and is adapted to be decomposed and replaced by molten metal to form a casting. The improved coating is the dried residue of an aqueous coating formed from water, refractory particles, and from between about 25 wt-% and 75 wt-% organic polymer on a non-volatile solids basis (i.e., dry film basis). Lustrous carbon is reduced when casting iron.

REFERENCES:
patent: 4240492 (1980-12-01), Edwards et al.

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