负压实型铸造用涂料透气性的研究  

Permeability of Washings for Vacuum Evapouration-Pattern Casting

作　　者：王恩泽[1] 何纪运 沈军[2] 阎峰云[2] 

机构地区：[1]西安交通大学,西安710049 [2]甘肃工业大学

出　　处：《特种铸造及有色合金》1993年第6期1-3,共3页Special Casting & Nonferrous Alloys

摘　　要：探索了聚乙烯醇、水玻璃及粘土加入量对涂料常温透气性及经高温后透气性的影响。结果表明:聚乙烯酸加入量增加,常温透气性存在一峰值,高温后透气性提高;水玻璃量增加使常温透气性下降,高温后透气性存在一峰值;粘土量增加使常温透气性下降高温后透气性提高。The effects of the polyvinyl alcohol (PVA) , sodium silicate and bentonite contents on the permeability of washings at room temperature (K1) and after high temperature heating (K2) were studied. The results shaw that as the content of PVA increasing , K1 possesses a peak value, and K2 rises, as the content of sodium silicate increasing, K1 descends and K2 possesses a peak value, as the content of bentonite increasing, K1 descends and K2 increases.

关 键 词：真空密烘铸造 涂料 透气性 

分 类 号：TG249.9[金属学及工艺—铸造]