УСТРОЙСТВО ДЛЯ УПРАВЛЕНИЯ ДАВЛЕНИЕМ В ЛИТЕЙНОЙ ФОРМЕ

摘要

FIELD: foundry, namely manufacture of vacuum-film casting molds. ^ SUBSTANCE: apparatus includes vacuum duct communicated with flasks of casting mold, vacuum receiver. Pressure pickups arranged in filler of mold, unit for controlling and monitoring. Casting mold is insulated from environment by means of film. When vacuum is created in flask pressure pickups alternatively transmit signals to controlling and monitoring unit in order to compare received pressure signals with pressure values stored beforehand in memory unit. If pressure value differs from stored pressure value signal is fed to drive unit of baffle plate providing opening or closing of vacuum duct connecting flask with vacuum receiver. ^ EFFECT: automatic lag-free maintenance of desired pressure value in vacuum-film casting mold. ^ 1 dwg