SUSPENSION FOR THE FRONT LAYER OF THE CERAMIC MOLD FOR CASTING ON HEAT-REMOVABLE MODELS Russian patent published in 2022 - IPC B22C1/02 B22C1/16 B22C9/04 

FIELD: foundry production.

SUBSTANCE: invention relates to foundry production, namely the manufacture of ceramic casting molds for thermally removed patterns in the production of precision castings from ferrous and non-ferrous alloys. The suspension for the front layer of the ceramic mold contains a ready-made organosilicon binder, mineral acid and a refractory filler, while additionally, in excess of 100%, it contains acetone in an amount of 2.0-5.0 wt.% and higher fatty alcohols C₁₇-C₁₉ in an amount of 0.5- 0.7 wt.%.

EFFECT: invention allows minimizing peeling, swelling, warping and cracking of the front layer of the casting mold, which reduces casting rejects due to surface defects.

1 cl, 2 tbl