CASTING EQUIPMENT MANUFACTURING METHOD Russian patent published in 1995 - IPC

FIELD: foundry. SUBSTANCE: method involves manufacturing drier by replicating the surface of mold half; to do that, placing flask so that its basic surface coincides with that of mold half; biasing mold to flask basic surfaces by pressure strips, with deviation of flask basic surfaces from perpendicular position not exceeding 0.015 mm and roughness of working surfaces not exceeding R_a= 1,25 μn micron; applying separating and lining layers to surface to be replicated; pouring thermoplastic mass into flask and hardening it; repeating operations, beginning from flask assembly operation; using another flask at the second stage of process, with second flask being mirror image of first flask used at the first stage. Replica obtained at the first stage makes primary standard. EFFECT: increased efficiency and high quality of manufactured equipment. 3 dwg