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在盐酸内酸洗是制造锉刀的重要工艺之一,因其表面质量的好坏在很大程度上取决于酸溶液的浓度和它的温度。提高酸的浓度(25～30%)和温度(约70℃),可以得到要求的表面质量。但与此同时,劳动卫生条件由于氯化氢的大量蒸发而显著变坏,酸的消耗量增大,金属酸洗程度也会超出允许范围。故只有使泄出的酸性气体与周围空气隔绝和防止金属酸洗过度的条件下才能强化酸洗过程。应用泡沫生成剂,是使周期和连续酸洗设
Acid pickling in hydrochloric acid is one of the most important processes for making a file because the surface quality is very much dependent on the acid solution concentration and its temperature. Increase the acid concentration (25 ~ 30%) and temperature (about 70 ℃), you can get the required surface quality. However, at the same time, labor and hygiene conditions have deteriorated significantly due to the large amount of hydrogen chloride evaporated, the acid consumption has increased, and the degree of metal pickling has also exceeded the allowable range. Therefore, the acid pick-up process can be strengthened only by isolating the leaked acid gas from the surrounding air and preventing the metal pickling from being excessive. The use of foam generators, is to make periodic and continuous pickling set