【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:75~150g/LNaOH,6~15g/LNa2S,38.5~42.0g/LTEA,溶解Al32.5~120·0g/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1.2~1.4μm、化学铣切壁厚公差≤0·12mm、化学铣切轮廓线线偏离≤0·75mm。更多还原

【Abstract】 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 Na₂S>dissolved aluminum>triethanolamine （TEA）>NaOH. The optimum composition of the chemical milling solution was suggested as 75¹50 g/L NaOH, 6¹5 g/L Na₂S, 38.5⁴2.0 g/L TEA, and 32.5¹20.0 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 1.2¹.4 μm, a wall thickness tolerance below 0.12 mm, and a contour line deviation below 0.75 mm.更多还原