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为了革新沿用的酸洗工艺,提高酸洗质量,简化工序,减轻劳动强度,避免公害,我们已研究成功钢材酸洗磷化一步法,经“一步法”处理过的钢材,不仅具有短期的防锈能力,且能提高涂膜的耐蚀性能。采用酸洗磷化一步法对钢材进行酸洗时,在酸洗液中不断溶解了氧化皮和铁锈,使磷酸二氢铁〔Fe(H_2PO_4)_2〕逐步积累。当Fe~++离子的浓度增加到28克/升后,就会逐渐延长钢材酸洗磷化的时间,当Fe~++离子浓
In order to innovate the pickling process, improve the pickling quality, simplify the process, reduce the labor intensity and avoid the public hazard, we have studied the successful steel pickling phosphating one-step process and the “one-step process” Rust resistance, and can improve the corrosion resistance of the coating. Using pickling phosphating one-step pickling steel, the pickling solution continuously dissolved scale and rust, so that the iron dihydrogen phosphate [Fe (H2PO4) _2] gradually accumulate. When the Fe ~ + + ion concentration increased to 28 g / L, it will gradually extend the pickling phosphating time of steel, when Fe ~ + + ion concentration