传统的水玻璃砂生产铸铁件易产生粘砂缺陷,而且水玻璃砂溃散性差,落砂除芯困难。因而铸铁件生产中未能广泛采用水玻璃砂来造型制芯。有机酯水玻璃砂铸造新工艺的应用,为铸铁件采用水玻璃砂铸造生产开辟了途径。由于有机酯的加入,使水玻璃的加入量减少近50％,这就使水玻璃砂表面引起化学粘 The traditional production of water glass sand cast iron easy to produce sticky sand defects, and sodium silicate collapsible poor sand off core difficult. Therefore, the production of cast iron parts failed to widely use sodium silicate sand molding system. The application of the new process of organic ester sodium silicate sand casting opens up a way for the production of cast iron parts using sodium silicate sand. Due to the addition of organic esters, the amount of water glass is reduced by nearly 50%, which causes the surface of water glass sand to cause chemical stickiness