2197铝锂合金碱性化铣液中Al^(3+)浓度对化铣表面质量的影响  

Influences of Concentration of Aluminum Ion in Alkaline Milling Solution on Milling Surface Quality of 2197 Al- Li Alloy

作　　者：刘刚[1] 李昊[1] 孟海燕[2] 

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330034 [2]南昌航空大学科技学院,江西南昌330034

出　　处：《材料保护》2015年第8期67-69,9,共3页Materials Protection

基　　金：江西省教育厅科技项目铝锂合金化铣工艺研究(Gjj11696)资助

摘　　要：铝锂合金有望在航空航天领域广泛使用,常对其进行化铣加工。目前,尚未见关于化铣液中Al3+如何影响铝锂合金化铣表面质量的详细报道。研究了碱性化铣液中Al3+浓度对2197铝锂合金化铣加工速率、表面粗糙度、浸蚀比及加工精度等的影响。结果表明:随着化铣液中Al3+浓度增加,化铣速率不断下降,当化铣速率低于20μm/min时,槽液失效;化铣试样表面粗糙度和浸蚀比均随Al3+浓度增加呈不断下降趋势,Al3+浓度过低或过高均不利于化铣;Al3+浓度的增加对加工精度的影响不大,铝锂合金的初始化铣液中含有一定量的Al3+浓度对化铣有利;综合考虑,化铣时适宜的Al3+浓度为20~60 g/L。Effects of concentration of Al^(3+) in alkaline milling solution on milling speed,surface roughness,erosion ratio and machining accuracy of 2197 Al-Li alloy were investigated.Results showed that with the increase of concentration of Al^(3+) in the milling solution,the milling speed was reduced.When the speed was lower than 20 μm/min,the bath solution was invalid.The surface roughness and the etching ratio gradually decreased with the increase of the concentration.The too low or too high concentration of Al^(3+) was harmful for the milling,and the concentration of Al^(3+) had little impact on machining accuracy.In the initiate milling solution,a certain amount of Al^(3+) was good for the milling treatment.After overall consideration,the proper concentration of Al^(3+) was 20 ~ 60 g/L.

关 键 词：化学铣切 2197铝锂合金 化铣速率 表面粗糙度 浸蚀比 

分 类 号：TG174.4[金属学及工艺—金属表面处理]