通过对E110合金管材酸洗过程中表面黑膜的产生与酸洗液中氢氟酸含量关系的对比实验及试样表面Fˉ残留的检测,探讨了适应于该合金材料酸洗的酸洗液配比.同时,通过酸洗后管材表面黑膜的不同处理方案,确定了去除黑膜的有效方法.实验最终确定的酸洗液配比为25％硝酸+1.5％～2％氢氟酸+73％～73.5％水(体积分数),酸洗工艺为水浸→酸洗→NH4 HC03洗涤→80～90℃热水洗→高压水洗→冷水洗→海绵吹擦.%The relationship between the surface black film and the content ratio of HF acid in acid pickling, and the F" residues on the sample surface of the El 10 alloy tube after acid pickling were analyzed. The suitable acid pickling ratio for this alloy material was also discussed. Meanwhile, the method of dealing with the black film on surface with the different processes was obtained, to provide experimental basis for the alloy pickling process of industrial production. The confirmed acid pickling ratio is 25%HNO3 + 1.5% -2% HF +73% -73.5% water, and the pickling process is water immersion→pickling→NH4HCO3 washing→80-90℃ hot water washing→high pressure water washing → cold water washing →wipe with sponge according to experiments.
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