2014铝合金挤压棒材表面气泡分析  

Study on formation mechanism of surface blistering for 2014 aluminum alloy extruded bars

作　　者：周京辉 蒋春丽 陈宜钊 李明 Zhou Jinghui;Jiang Chunli;Chen Yizhao;Li Ming(Guangdong Fenglu Aluminum Co.,Ltd.,Foshan 528133,China)

机构地区：[1]佛山市三水凤铝铝业有限公司,佛山528133

出　　处：《铝加工》2021年第1期48-50,共3页Aluminium Fabrication

摘　　要：采用OM、SEM、EDS等手段分析了2014铝合金挤压棒材表面起泡的形貌、显微组织和成分等,发现产生表面气泡的主要原因是表层夹杂的气体析出。采取减少铸锭氢含量、清除铸锭表面油污、对铸锭剥皮、加大墩粗压力、增加压余厚度、小导流孔加防倒槽模具结构、降低固溶温度以及减少炉内水蒸气等措施可以减少气泡的产生。In this paper,OM,SEM and EDS were used to analyze the morphology,microstructure and composition of the surface blis⁃ter of 2014 aluminum alloy extruded bar.It was found that the main reason for the surface blister was the gas precipitation of the sur⁃face inclusion.Bubbles can be reduced by reducing the hydrogen content of ingot,removing the greasy dirt on the surface of ingot,peeling the ingot,increasing upsetting pressure,increasing the thickness of remnant extrusion,adding the structure of anti reverse groove mould for small diversion hole,reducing the solution temperature and reducing the water vapor in the furnace.

关 键 词：2014铝合金 挤压棒材 表面气泡 

分 类 号：TG376.8[金属学及工艺—金属压力加工]