新型酯硬化水玻璃砂的优点及影响其性能的因素  

Advantages of New Type Ester-Hardened Sodium Silicate Sand and Factors Influencing Its properties

作　　者：樊自田[1] 董选普[1] 张大付[1] 黄乃瑜[1] 陆浔 何大炎 

机构地区：[1]华中科技大学,湖北武汉430074 [2]铁道部中车公司北方集团,北京100030

出　　处：《现代铸铁》2004年第2期50-55,共6页Modern Cast Iron

基　　金：铁道部中国车辆总公司研发资助项目。

摘　　要：水玻璃砂的常温强度越高,其溃散性通常越差。在保证水玻璃砂具有足够的常温强度的条件下,获得好的溃散性一直 是铸造工作者追求的目标。笔者介绍了新型酯硬化水玻璃砂的性能特点,就酯硬化改性水玻璃砂常温强度和溃散性的影响 因素与改进方法进行了试验研究和探讨。In general, the higher the atmospheric temperature strength of the sodium silicate sand is, the more deteriorative its collapsibility becomes. It is always the goal pursued by foundrymen to obtain a sort of sodium silicate sand having excellent collapsibility while ensuring its sufficient atmospheric temperature strength. The property characteristics of new generation of ester-hardened sodium silicate sand was introduced, and the factors influencing the atmospheric temperature strength and collapsibility of ester-hardened modified sodium silicate sand, as well as the measures to improve collapsibility were investigated and discussed.

关 键 词：酯硬化水玻璃砂 常温强度 溃散性 铸造 

分 类 号：TG221[金属学及工艺—铸造]