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我们自采用铝合金化学铣切加工工艺以来,一直是用单一的苛性钠溶液作为腐蚀液。用这种腐蚀液加工,化铣后的零件表面光洁度一般要比原表面光洁度降低1～2级。随着航空工业的不断发展,越来越多的材料的零件要求进行化铣加工,对化铣后的表面质量及光洁度的要求也严格了,仍然用单一的苛性钠腐蚀液加工,有的就满足不了质量的要求。如有的蒙皮在化铣后要进行胶接点焊,
We have been using a single caustic soda solution as the etching solution since we used aluminum alloy milling technology. With this corrosive liquid processing, milling surface finish after the parts are generally lower than the original surface finish 1 to 2 levels. With the continuous development of the aviation industry, more and more material parts are required to be milled and processed. The requirements on the surface quality and finish after milling are also strict. They are still processed with a single caustic soda solution, and some Can not meet the quality requirements. If the skin after the milling of the adhesive to be welded,