湿法造型仍是铸件生产的最重要的方法。任一湿砂造型系统能否成功应用于生产,很大程度上取决于其连续重复使用造型混合料并保持其性能不变的能力。型砂的冷却是其中一个基本问题。湿型砂必须满足流动性、塑性变形能力、湿强度、干强度和耐高温等性能要求。除耐高温外,其它性能取决于活性粘土与水的凝聚作 Wet molding is still the most important method of casting production. The successful application of any wet sand molding system to production is largely dependent on its ability to continuously re-use the molding compound and maintain its performance. Sand cooling is one of the basic problems. Wet sand must meet the fluidity, plastic deformation capacity, wet strength, dry strength and high temperature performance requirements. In addition to high temperature, the other properties depend on the agglomeration of activated clay and water