0前言在铸铁件湿型砂生产中，通常是靠在型砂中加入一定量的煤粉来防止铸件粘砂，提高铸件表面光洁度。随着对煤粉防粘砂机理研究工作的深人，铸造工作者研制、开发了多种普通煤粉、高效合成煤粉及煤粉代用材料等，使铸造生产厂家可以有更多的选择。本文主要通过性能测试及浇注 0 Preface In cast iron wet sand production, usually by adding a certain amount of coal in the sand to prevent the casting sticky sand and improve the casting surface finish. With the deep research on the mechanism of coal anti-sticking sand, foundry workers have developed and developed many kinds of common pulverized coal, high-efficient synthetic pulverized coal and substitute materials for pulverized coal so that casting manufacturers can have more choices. This article mainly through the performance test and pouring