铸铁件传统的生产工艺采用粘土砂为型砂，但几十年的生产实践证明，铸件质量存在着许多问题，例如铸件易产生严重的砂眼，粘砂，几何形状不规绍．尺寸精度不高．表面粗糙严重等问题，从而严重影响了产品的内在和外现质量，难以适应竞争激烈的市场变化。另外采用粘土工艺造型和 The traditional production technology of cast iron uses clay sand as molding sand. However, decades of production practice have proved that there are many problems in the quality of castings. For example, castings are liable to produce severe trachoma, sticky sand and irregular geometry. Dimensional accuracy is not high. Serious surface roughness and other issues, which seriously affected the product’s internal and external quality, it is difficult to adapt to highly competitive market changes. In addition, modeling and clay technology