影响铝锭表面质量的因素分析和改善措施  

Analysis of influencing factors on aluminum ingots surface quality and its improvement measures

作　　者：魏兴春[1,2] 冯瑞成[1,2] 赵俊天[1,2] 芮执元[1,2] 

机构地区：[1]兰州理工大学有色冶金新装备教育部工程研究中心,甘肃兰州730050 [2]兰州理工大学机电工程学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2009年第5期13-16,共4页Journal of Lanzhou University of Technology

基　　金：甘肃省自然科学基金(0809RJZA012)

摘　　要：针对生产中铝锭表面出现的飞边、夹渣、表面波纹过大等影响外观质量的因素,从生产实际出发,分析认为由于铝液流量不稳或扒渣速度过快而形成飞边、夹渣;由于扒渣不平稳形成同心圆状水波纹;由于水的汽化和氢气的逸出形成泡状水波纹;从设备本身的结构分析认为由于链条的多边形效应和爬行以及在生产过程中的冲击、振动等是产生沟槽状水波纹的原因.从铸造工艺、设备、设备维护与管理3个方面提出改善措施.实践证明,这些措施的综合运用能有效提高铝锭的表面质量.Aimed at the influencing factors on aluminum ingots surface quality such as the overlap, slag inclusion and surface ripple, and according to the actual production practice, it was found from analysis that the overlap and slag inclusion were caused by instable aluminum fluid flow or the deslagging was too fast; the concentrical ripple was caused by unstable deslagging, the spumous ripple was caused by vaporization of water and escape of hydrogen. The groovy ripple was caused by polygonal effect of the chain and its craw in the equipment, or unexpected impact and vibration in production process. Therefore, improvement measures were put forward in connection with casting process, equipment, equipment maintenance and management. Practice has proved that the integrated use of these measures could effectively improve the surface quality of aluminum ingots.

关 键 词：铝锭 铝锭连续铸造机组 水波纹 多边形效应 

分 类 号：TG245[金属学及工艺—铸造]