摘要
针对消失模铸造生产中铸铁件的积碳、皱皮等缺陷问题,研制了一种水基消失模铸造涂料。选用铝矾土作为主加耐火骨料,高岭土、硅灰石、滑石粉为辅加耐火骨料,海泡石和CMC为复合悬浮剂,硅溶胶和聚乙烯醇(PVA)作为复合粘结剂。采用正交试验法和极差分析法,找到了铝矾土、高岭土、硅灰石、滑石粉的最佳配比,配制成的水基消失模铸造涂料各项性能良好。生产验证表明:该配方涂料工艺性能良好,铸件表面光滑,无粘砂、气孔、积碳、皱皮等铸造缺陷。
A kind of water-base lost foam casting coating was developed to solve the problems of carbon deposition and elephant skin in cast iron parts in production in the production.Bauxite is selected as the main refractory aggregate,kaolin,wollastonite,talcum powder as the auxiliary refractory aggregate,sepiolite and CMC as composite suspension agent,silica sol and polyvinyl alcohol(PVA)as composite binder.The best ratio of bauxite,kaolin,wollastonite and talcum powder was found by orthogonal test and range analysis.The waterbase EPC coating with good properties was prepared.The production verification shows that the coating has good technical performance,smooth casting surface and no casting defects such as burning-on,blowhole,carbon deposition and elephant skin.
作者
杨哲
汪磊
YANG Zhe;WANG Lei(Yangtze River Engineering Vocational and Technical College,Wuhan 430212,Hubei,China;School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China)
出处
《铸造》
CAS
北大核心
2020年第5期496-500,共5页
Foundry
基金
国家自然科学基金青年科学基金项目(11502088)。
关键词
铝矾土
铸铁
消失模
水基涂料
alumina bauxite
cast iron
lost foam
water-base coating
