镁合金用水基消失模涂料的制备与优化  

Preparation and Optimization of Water-Based Lost Foam Coating for Magnesium Alloys

作　　者：袁博[1,2] 黄建波[3] 陈淑花 YUAN Bo;HUANG Jian-bo;CHEN Shu-hua(Wuhan City Vocational College,Wuhan 430064,Hubei,China;Wuhan University of Technology,Wuhan 430070,Hubei,China;Hubei Engineering Vocational College,Huangshi 435003,Hubei,China)

机构地区：[1]武汉城市职业学院,湖北武汉430064 [2]武汉理工大学,湖北武汉430070 [3]湖北工程职业学院,湖北黄石435003

出　　处：《铸造》2020年第3期254-258,共5页Foundry

基　　金：湖北省教育厅科研计划项目(B2019433);武汉市市属高校产学研研究项目(CXY2018013)。

摘　　要：针对镁合金消失模铸造特点,选择镁砂粉、硅藻土、云母粉为耐火骨料,通过改变耐火骨料的比例,研究了骨料配比对涂料性能的影响。进行正交试验和极差分析,对涂料悬浮剂、粘结剂各组分的加入量进行优化,最终确定涂料的最佳配方,制备出一种可用于镁合金的水基消失模铸造涂料。经过生产试验验证,结果表明:该配方涂料工艺性能良好,铸件表面光滑,无气孔、冷隔、粘砂及浇不足等铸造缺陷。According to the characteristics of magnesium alloy lost foam casting,magnesia powder,diatomite and mica powder were selected as refractory aggregates.By changing the proportion of refractory aggregates,the effect of aggregate ratio on the properties of the coating was studied.Then the orthogonal test and the range analysis were carried out to optimize the addition amount of each component in the coating suspending agent and the binder.Finally,the optimum formulation of the coating was determined,and a water-based lost foam casting coating which can be used for the magnesium alloy was prepared.Actual production verified that the formulation has good process performance,and the castings produced have smooth surface,no such defects as blowhole,cold lap,burning-on and misrun.

关 键 词：镁合金 消失模 镁砂粉 硅藻土 云母粉 

分 类 号：TG249.5[机械工程—精密仪器及机械]