用于冷芯盒工艺的高性能水基涂料的研究
Development the Water-based coating for cold box process
刘生银,孙兴华,金晓春,黄爱民
〔亚什兰(中国)投资
铸造部,上海
200030
〕摘要:水对冷芯盒工艺的砂芯强度影响非常大,
试验数据
说明,已经生产出来的砂芯,如果
在高潮湿(相对湿度 90%)中存放 24 小时,强度会下降 50%-67%.生产实际中,芯砂中如果含水
量大于0.2%时,几乎不能用于冷芯盒工艺;鉴于此,开发出一种对砂芯强度影响最小的水基
涂料。关键词:
冷芯盒工艺;
砂芯强度; 9022C 水基涂料
Abstract: Sand cores made by cold box process are very sensitive to moisture. It
is shown that the tensile strength of sand cores will decrease by 50-67% after they
are stored 24 hours under
90% relative humidity ...