**The construction of automobile manufacturing plant and its casting technology level. The construction of the automobile manufacturing plant began in 1953. On March 26, 1956, molten iron was released in the foundry, announcing that the first large-scale production workshop for automobile castings in China was completed and put into production, setting a model for the overall development of casting production in the automobile industry in China. . From material preparation to sand processing, modeling and core making, metal melting and pouring, sand falling and cooling and cleaning of castings, the foundry is all carried out through casting conveyors, suspension chains, scale conveyors, and belt conveyors. And bucket elevators and other conveying equipment are integrated into a whole. Balance wheel type sand mixer, crawler type semi-automatic shot blasting cleaning drum, continuous suspension chain shot blasting cleaning room, cupola and electric furnace double smelting, lifting electric annealing furnace and other process equipment, all have foreign countries in the late 1940s and 1950s Early technical level.
Many mechanized transportation equipment connect each process into a complete production line. The modeling adopts the world-wide pneumatic vibrating or vibrating molding machine at the time, and 6 mechanized molding production lines are formed by continuous or intermittent trolley-type casting conveyors, which are respectively used for gray cast iron and malleable cast iron modeling; for modeling; The sand is sent from the sand processing department by a belt conveyor and stored in the sand bucket above the molding machine. The production line manually sets the cores. For the complex core sets used in cylinder blocks and cylinder heads, they are pre-assembled first, and then the cores are lowered with air lifting fixtures, and the boxes are manually closed. The core is made of oil sand, paper pulp sand, and grease sand. The core sand is prepared by a roller-type sand mixer; small oil sand cores are made by hand, and large sand cores are produced by a core making machine; the sand cores are dried in a chain-plate vertical continuous gas drying furnace.
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Link to this article：Analysis on the Construction Ability of Automobile Manufacturing Plant
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