M384型制壳机在我厂已运行两年多了,共生产模组四万多组,铸件近三百吨,解决了中大件机械化制壳问题,显示了工艺先进、周期短、效率高、环境良好等优点。但由于气温、湿度、零件形状及制壳材料等因素变化,机械化制壳的工艺灵活性不如手工制壳大,模壳质量不够稳定。从1978年以来我们采取一些措施,质量有所提高,铸件废品率由原来的17.8％ M384 shell machine in our plant has been running for more than two years, a total of more than 40,000 groups of production modules, casting nearly 300 tons, to solve the problem of large pieces of mechanical shell, showing the advanced technology, short cycle, high efficiency , Good environment and so on. However, because of the changes of temperature, humidity, shape of parts and shell material, the mechanical flexibility of mechanized shell making is not as big as that of handmade shell and the quality of shell is not stable enough. Since 1978, we have taken some measures to improve the quality of castings rejection rate from the original 17.8%