亚铝晶石复合骨料水基消失模涂料的制备及其性能研究  

Preparation and Properties of Water Based Lost Foam Coating with Aluminite Composite Aggregate

作　　者：高淼[1] 焦红卫[1] 范有雄[1] 陈刚[1] 黄建波 GAO Miao;JIAO Hong-wei;FAN You-xiong;CHEN Gang;HUANG Jian-bo(Wuhan Software Engineering Vocational College,Wuhan 430205,Hubei,China;Hubei Engineering Vocational College,Huangshi 435003,Hubei,China)

机构地区：[1]武汉软件工程职业学院,湖北武汉430205 [2]湖北工程职业学院,湖北黄石435003

出　　处：《铸造》2020年第11期1207-1211,共5页Foundry

基　　金：湖北省教育厅科学技术研究项目(B2019419)。

摘　　要：用亚铝晶石粉、石英粉、硅藻土作为复合耐火骨料,以快干硅溶胶和聚乙烯醇(PVA)作为复合粘结剂,钠基膨润土和黄原胶作为复合悬浮剂,制备铸铁用水基消失模涂料。通过正交试验确定了涂料中各组分的最佳配比。测试了涂料的各项性能,观察分析了涂层的微观形貌和组织。结果表明:涂层中耐火骨料颗粒均匀分布、结合紧密,颗粒间形成的沟壑、孔洞相互连成一片,这改善了涂层的透气性能,防止了铸件表面气孔、碳缺陷的产生,涂料综合性能良好。Water based EPC coating for cast iron was prepared by using aluminite powder, quartz powder and diatomite as composite refractory aggregate, quick drying silica sol and polyvinyl alcohol(PVA) as composite binder, sodium bentonite and xanthan gum as composite suspending agent. The optimum ratio of each component in the coating was determined by orthogonal test. The properties of the coating were tested, and the morphology of the coating was observed. The results show that the refractory aggregate particles are evenly distributed and closely combined, and the grooves and holes formed between the particles are connected together, which improves the air permeability of the coating, prevents the occurrence of blowholes and carbon defects on the surface of the casting, and the comprehensive properties of the coating is good.

关 键 词：亚铝晶石粉 复合粘结剂 复合悬浮剂 消失模涂料 

分 类 号：TG249.5[机械工程—精密仪器及机械]