热处理状态对LD10铝合金化铣表面质量的影响  

Influence of Heat Treatment State on Chemical Milling Surface Quality for LD10 Aluminum Alloy

作　　者：王煜 王建光 

机构地区：[1]上海航天设备制造总厂,上海200245

出　　处：《宇航材料工艺》2014年第2期75-77,共3页Aerospace Materials & Technology

摘　　要：为了解决运载火箭结构中口盖零件化铣后表面质量较差的问题,对LD10铝合金板材的化铣加工进行了试验研究。采取同批次、相同变形量、不同热处理状态(淬火+人工时效、淬火+过时效)的零件在相同的化铣工艺参数下进行试验,并对零件的化学成分、金相组织进行了分析。理论研究及试验结果表明:LD10铝合金的化铣表面质量与加工前热处理状态有关,退火状态及淬火+人工时效状态的零件化铣后表面质量较好,在不影响力学性能的前提下,可采用过时效处理提高化铣表面质量。The research of chemical milling for LD10 aluminum alloy plate have been studied in order to solve the problem of poor surface quality of cover which is processed by chemical milling used in the launch vehicle struc- ture system. Experiment was conducted following same chemical milling process parameters for parts with same batch, same deformation and different heat treatment state （quenching and artificial aging, quenching and over aging）. And the chemical composition and microstructure of the parts were analyzed. The results of theoretical study and experi- ment show that： surface quality of LDIO aluminum alloy parts processed by chemical milling is related with the heat treatment, moreover, the better surface quality belong to the part with annealing and quenching and artificial aging state. The surface quality of chemical milling part is improved by over aging without affecting mechanical properties.

关 键 词：LD10铝合金 化铣 表面质量 热处理状态 

分 类 号：V462[航空宇航科学与技术—航空宇航制造工程]