改善CO_2水玻璃砂溃散性的研究  

A Study on Improving the Collapsibility of CO_2-Silicate Sand

作　　者：徐振中[1] 董仙桃 李正义[2] 杜六一 刘肇香 

机构地区：[1]太原重型机械学院 [2]太原重型机器厂

出　　处：《铸造》1990年第8期16-21,共6页Foundry

摘　　要：本文研究了改性纸浆废液SKH、石灰石和蛭石附加物对CO_2水玻璃砂性能的影响。试验结果表明,这些附加物以及它们的混合物可以提高CO_2水玻璃砂的强度,减少型砂中的水玻璃加入量,改善溃散性,应用于铸钢件生产中可提高清砂效率1~2倍。Abstract The effects of SKH modified lignin liquor, limestone and vermiculite on the mechanical properties of CO2-silicate sand was investigated. The ex-perimental results show that those additives and its mixture added into CO2-silicate sand can increase the strength of moulding sand, improve the low-temperature collapsibility and reduce the addition levels of waterglass,hence, raising CO2-silicate sand cleaning effeciency of steel castings by 2-3 times.

关 键 词：水玻璃砂 溃散性 改性 纸浆 废液 

分 类 号：TG221.2[金属学及工艺—铸造]