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钢材在生产的过程中,有一道酸洗工序,目的就是将附着在轧制好的钢材表面的氧化铁皮等杂质除去,以利于下一工序加工成合格钢材。酸洗时将钢材浸在15％左右浓度的稀硫酸中,反复清洗,使氧化铁皮和钢材的表面与硫酸反应溶解。硫酸经过这样多
Steel in the production process, there is a pickling process, the purpose is to adhere to the surface of the rolled steel oxide scale and other impurities removed in order to facilitate the next process into qualified steel. Pickling the steel immersed in about 15% concentration of dilute sulfuric acid, repeated cleaning, so that the surface of the oxide scale and steel and sulfuric acid dissolved. Sulfuric acid through so much