Based on the experience with more than 10 years running shell mould casting line and with the application of various resin coated sands , some technical problems of resin coated sands for shell mould castings were discussed 摘要根据壳型生产线十几年运行和各类覆膜砂应用的经验,对壳型铸造用覆膜砂的一些技术问题进行探讨。