密度测量法在铝合金汽缸盖针孔度控制中的应用  

Application of Density Measurement to the Process Control of the Pinhole Quality of Aluminum Alloy Cylinder Head

作　　者：罗颖洹 李海河 莫仁波 

机构地区：[1]上汽通用五菱汽车股份有限公司供应商质量管理部,广西柳州545007

出　　处：《铸造》2014年第8期812-814,共3页Foundry

摘　　要：以AC4B铝合金汽缸盖为例,通过实验表明,工作环境下铝液存在吸气现象,其密度值有逐步变小的趋势,致使铸件针孔度出现超差。提出通过监控铝合金密度值来控制铸件针孔度的方法。The air-breathing phenomenon of molten aluminum was found in work environment by testing AC4B aluminum alloy cylinder head, its density tends to become smaller, and as a result, there is a quality risk that the pinhole degree of aluminum alloy casting will be out-of-tolerance. To solve this problem, in this paper, a process quality control method is put forward, which control the pinhole degree of aluminum alloy by monitoring the aluminum alloy density.

关 键 词：铝合金密度 铝合金针孔度 汽缸盖 密度测量法 

分 类 号：TG292[金属学及工艺—铸造]