自动造型线型砂性能要求及其控制

在自动造型生产线生产过程中,型砂性能对铸件质量具有决定性的影响,型砂性能控制是保证铸件质量的重要工艺手段。合理选择原砂、膨润土、煤粉等原辅材料,控制好型砂的水分、紧实率、透气性、湿压强度、含泥量及有效膨润土含量、挥发份、灼减量和旧砂温度、旧砂水分等是自动造型生产线型砂性能控制的关键。应确定合适的型砂各项性能指标、控制参数和控制方法,严格型砂混制的工艺过程,保证自动造型生产线正常运行,充分发挥自动造型生产线的优越性。稳定了型砂性能,就为获得良好的铸件成品率提供了保障。

Sand Control on Automotive Molding Line

In process of Automatic Molding Line,molding sand performance has significant influence on casting quality,that's why good control of molding sand is one of the important means to secure final casting quality.The key points in controlling molding sand on Automatic Molding Line are selecting reasonable raw materials such as new sand,bentonite,seacoal and so on,managing moisture,CB,permeability,GCS,AFS clay,MBC,VCM,LOI in molding sand,controlling temperature and moisture in return sand.Suitable molding sand specifications should be set,as well as control Parameters and means.Mulling process should be managed carefully and strictly.In this way,Automatic Molding Line can run normally and its advantage will be exerted sufficiently.