覆膜特种砂与覆膜硅砂热膨胀性能的对比  

Thermal Expansion Properties Comparison Between coated Special Sand and Coated Silica Sand

作　　者：刘向东[1] 肖柯则[1] 王文清[2] 戴绪绮[2] 李远才[2] 

机构地区：[1]内蒙古工业大学,呼和浩特010062 [2]华中理工大学,武汉430074

出　　处：《现代铸铁》1999年第4期13-16,共4页Modern Cast Iron

摘　　要：测定了覆膜特种砂及普通覆膜硅砂在激热条件下的膨胀值。结果表明，两种覆膜砂的激热膨胀值差异较大。理论分析说明，覆膜砂的激热膨胀不仅受原砂种类的影响，而且还受粘结剂及其它附加物的影响。The thermal expansion values of resin-coated special sand and resin-coated silica sand under sudden heating condition were measured. The results showed that the expansion value difference between two sorts of coated sand is quite big. Theory analysis showed that the thermal expansion of the coated sands were to be influenced not only by the sort of the raw sand, by the sort of the binder and also by other additives.

关 键 词：覆膜特种砂 覆膜硅砂 热膨胀性能 铸造 

分 类 号：TG221.1[金属学及工艺—铸造]