铝合金筒段化学铣切工艺研究  

Chemical Milling Process for 2219 Aluminum Alloy Tube

作　　者：尹茂生[1] 廖广其[1] 文庆杰 程红霞 

机构地区：[1]西北工业大学材料学院,陕西西安710072 [2]成都飞机工业公司热表中心工艺组,四川成都610092

出　　处：《材料保护》2005年第8期24-25,41,共3页Materials Protection

摘　　要：对2219铝合金筒段的化学铣切工艺进行了研究,以确定化学铣切工艺的最佳配方和工艺控制要点.对NaOH、Na2S、三乙醇胺(TEA)和溶解Al正交试验的结果进行了验证性试验,确定了对化学铣切表面粗糙度的影响程度依次为:Na2S、溶解Al、TEA、NaOH,化学铣切溶液的最佳配方为:75～150 g/L NaOH, 6～15 g/L Na2S, 38.5～42.0 g/L TEA,溶解Al 32.5～120.0 g/L.按该配方对2219铝合金筒段进行化学铣切,可达到最佳效果:表面粗糙度1.2～1.4 μm、化学铣切壁厚公差≤0.12 mm、化学铣切轮廓线线偏离≤0.75 mm.The chemical milling process for 2219 aluminum alloy tube was investigated using orthogonal test and the optimum formula and technology were established. It was found that the effect of various chemicals on the surface roughness of the chemically milled Al[LL] alloy was ranked as Na_2S>dissolved aluminum>triethanolamine (TEA)>NaOH. The optimum composition of the chemical milling solution was suggested as 75~150 g/L NaOH, 6~15 g/L Na_2S, 38.5~42.0 g/L TEA, and 32.5~120.0 g/L dissolved aluminum. It was able to realize satisfactory chemical milling of the Al alloy using the optimized formulation. Namely, the chemically milled 2219 Al alloy tube had a surface roughness of 1.2~1.4 μm, a wall thickness tolerance below 0.12 mm, and a contour line deviation below 0.75 mm.

关 键 词：化学铣切 2219铝合金 表面粗糙度 

分 类 号：TG54[金属学及工艺—金属切削加工及机床]