消失模铸造中盲孔及细深孔粘砂问题的解决途径  

Elimination of Burning-on in Blind and Tenuous Hole in Negative Pressure Lost Foam Casting

作　　者：朱丽娟[1] 王明娜[1] 张喻[1] 董秀琦[1] 

机构地区：[1]沈阳理工大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2009年第11期1040-1041,共2页Special Casting & Nonferrous Alloys

摘　　要：揭示了消失模负压铸造中,盲孔和细深孔机械粘砂的机理,认为有3种途径可以解决机械粘砂:①减小涂料中粉料的粒度;②降低金属液温度;③减小负压。并指出防治机械粘砂的有效方法——用级配石灰石砂做涂料及填料。通过对铸钢件、铸铁件试验验证,级配石灰石粉做涂料和填料,可以有效减少粘砂。The origination of generated mechanical burning-on in blind and tenuous hole in negative pressure lost foam casting were expounded theoretically.A way to prevent mechanical burning-on was presented including using proportional CaCO3 as coating and filler to coat and fill into the hole.The results are verified.

关 键 词：消失模负压铸造 细深孔 粘砂 

分 类 号：TG249.5[机械工程—精密仪器及机械]