武汉重型机床厂42连革命工人,在战无不胜的毛泽东思想指引下,在省、市革委会的支持和帮助下,采用流态自硬砂薄壳压模造型获得成功。薄壳压模造型是利用流态自硬砂的流动性和自硬性能,首先将混好的流态砂注入和铸件外形相似的成型铁模中,然后施加一定的压力把模型压入铁模中,使流态砂沿铁模内壁成型。待其自硬后,取出模型,便形成一个吃砂量为30～50毫米的薄 With the support and assistance of the provincial and municipal revolutionary committees under the leadership of invincible Mao Zedong Thought, 42 revolutionary workers in Wuhan Heavy Duty Machine Tool Factory succeeded in adopting the fluid-filled, self-hardening sand-shell molding. Shell molding is the use of flow patterns of self-hardening sand flow and self-hardening properties, first of all mixed fluid sand into the casting shape and shape similar to the iron mold, and then exert a certain pressure to the model iron mold In the flow of sand along the iron mold wall molding. To be self-hardening, remove the model, then the formation of a thin amount of sand to 30 to 50 mm