COMPOSITION AND METHOD OF PRODUCING CORES INTENDED FOR USE IN METAL CASTING Russian patent published in 2020 - IPC B22C9/10 

FIELD: foundry.

SUBSTANCE: invention can be used in production of cores. Powdery mixture containing a plurality of milled ceramic particles and a plurality of ground resin particles are placed in a mold and compacted. Mold is heated and the first founding rod is produced. First casting rod is impregnated with initial polymer compound to form second molding rod. Second casting rod is heated at a temperature of about 1000 °C for about 24 hours to form a third molding core.

EFFECT: higher mechanical strength of the casting core.

17 cl, 1 ex, 4 dwg