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磷化工艺,在防护黑色金属免受大气腐蚀,以及作为涂漆底层等方面获得了广泛的使用。我们知道,零件经化学去油、酸洗后的磷化膜,结晶粗大。而磷化零件,它必须先去油和除去氧化物。目前广泛应用的碱液去油、酸洗除氧化物的工艺,势必会使磷化膜随着去油、酸洗时间的增长,温度、浓度的增高而恶化。我们虽然在生产中发现去油、酸冼过的零件经揩刷后磷化,即能获得结晶细小而均匀的磷化膜,但由于揩刷工序
Phosphating process, in the protection of the ferrous metal from atmospheric corrosion, as well as the bottom coating has been widely used. We know that parts of the chemical degreasing, pickling phosphating film, coarse crystals. Phosphated parts, it must first go to the oil and remove oxides. Currently widely used lye degreasing, pickling oxide removal process is bound to make the phosphate film with the oil, pickling time, temperature, concentration and deterioration. Although we found in the production of oil, acid parts have been cleaned after brushing phosphating, that is, to obtain a small and uniform crystallized phosphate film, but due to brushing process