Device and production method for manufacturing automobile rear axle cast through metal mold with sand lining

The invention discloses device and production method for manufacturing an automobile rear axle cast through the sand lining process of a metal mold. The device is characterized in that a mud core component is arranged in a mold cavity formed after an upper iron mold and a lower iron mold are assembled, positions of sand shooting holes of the upper iron mold and the lower iron mold are in one-to-one correspondence, gas needles are arranged on an upper mold plate, the gas needles and the sand shooting holes of the upper iron mold are in one-to-one correspondence, a plurality of heating pipes are respectively and uniformly distributed in mold plates of the upper mold plate and a lower mold plate, a temperature control meter of the heating pipes is connected with a temperature sensor, a plurality of exhaust bosses are further uniformly distributed on the peripheries of the mold plates of the upper mold plate and the lower mold plate, water-cooling bases are respectively arranged on the upper mold plate and the lower mold plate, and a plurality of exhaust grooves are arranged on the parting surface of the upper iron mold and the parting surface of the lower mold plate. The automobile rear axle cast manufactured by adopting the device and the method is good in quality, high in size precision, high in process yield, low in production cost, good in a working environment and low in energy consumption.