聚乙烯泡沫对EPS消失模铸造表面粗糙度的影响  

Effect of Styrofoam Particles on the Surface Roughness of Lost Foam Casting with EPS Pattern

作　　者：米国发[1] 刘翔宇[1] 赵恒涛[1] 贾宝仟[2] 

机构地区：[1]河南理工大学材料科学与工程学院,河南焦作454000 [2]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150001

出　　处：《铸造》2007年第10期1100-1102,共3页Foundry

基　　金：河南省杰出人才创新基金(0621000700)。

摘　　要：研究了泡沫聚苯乙烯粒径、泡沫颗粒的粒度级配、成型发泡模具对EPS模表面粗糙度的影响。结果表明:同一发泡工艺参数下,预发泡后的泡沫聚苯乙烯粒径越小,EPS模表面粗糙度越低。泡沫颗粒的粒度级配可显著降低EPS模表面粗糙度。对30目与40目的珠粒进行级配,在体积比约为1∶1时,EPS模表面粗糙度最低。随着成型发泡模具表面粗糙度的降低,EPS模和铸件的表面粗糙度均降低。The effects of the grain size and grain gradation of styrofoam particles as well as the expendable polystyrene （EPS） forming tools on the surface roughness of EPS patterns were studied in the paper. The results show that with the decrease of pre-expended polystyrene grain size, the surface roughness of EPS patterns decrease under the same processing parameters. The grain size gradation of styrofoam particles could reduce the surface roughness of EPS patterns evidently. The EPS pattern possesses the lowest surface roughness when the volume ratio of the polystyrene particles （with grain size of 30 grades and 40 grades） was 1：1. With the decrease of surface roughness of forming tools, the surface roughness of EPS pattern and casting are decreased.

关 键 词：消失模铸造 EPS模 表面粗糙度 

分 类 号：TG249.5[机械工程—精密仪器及机械]