铝合金罐体封头分层原因分析及预防措施  

Causes of vessel head layering of aluminum tanks and preventive measures

作　　者：黄程毅 郑许[1] 胡传彬[1] 任月路[1] 徐燕萍[1] 

机构地区：[1]广西南南铝加工有限公司广西铝合金材料与加工重点实验室,广西南宁530031

出　　处：《轻合金加工技术》2018年第3期21-25,共5页Light Alloy Fabrication Technology

基　　金：国家国际科技合作专项项目(项目编号2014DFA50210);南宁市技术创新项目(项目编号2015-1-1).

摘　　要：通过接触式、水浸式超声波探伤和扫描电子显微镜分析、能谱分析,试验研究铝合金罐体封头板经过旋压后产生分层的原因。试验结果表明,板材中部含有片状密集排布的金属间化合物,它们将铝合金基体割裂,破坏了组织均匀性。探讨了金属内部缺陷的危害和通过提高金属纯净度降低内部缺陷含量的方法,以及超声波探伤和旋压自检对质量控制的作用。Causes of vessel head layering of aluminum tanks after spinning are investigated with contact and immersion ultrasonic testing, SEM, and EDS. The results show that there are lamellate intermetallic compounds concentrated in the middle of the tank sheet. These defects separate the matrix and destroy the microstructural homogeneity. Discussion is con- ducted on the harm of internal defects, reduction of internal defects by improving alloy puri- ty, and the effect of ultrasonic testing and self-inspection by spinning on the quality control.

关 键 词：铝合金罐体封头 旋压 分层 内部缺陷 超声波探伤 

分 类 号：TG146.21[一般工业技术—材料科学与工程]