论文部分内容阅读
高磷酸锌盐磷化液经长期使用后易产生絮状悬浮物，文中分析了可能产生絮状物的原因，确定了絮状悬浮物的成分为Ｆｅ３（ＰＯ４）２，经追踪磷化液中的Ｆｅ２＋含量，发现其值大于１３ｇ／Ｌ时产生絮状悬浮物。提出是由于主盐和促进剂比例失调所致，控制两者的比例在１～２∶１时，磷化膜均匀细致，Ｆｅ２＋维持在１０ｇ／Ｌ以下。进而探讨了该磷化液中促进剂的作用机理
The high phosphate zinc salt phosphating solution is easy to produce flocculent suspended solids after long-term use. The reason of possible floccules is analyzed in this paper. The composition of the flocculent suspended solids is determined to be Fe3 (PO4) 2, Fe2 + content, found that the value of more than 13g / L produce floc suspended material. Proposed is due to the main salt and accelerator due to the imbalance caused by the control of both the ratio of 1 ~ 2: 1, the phosphate film uniform and detailed, Fe2 + maintained at 10g / L or less. Then, the mechanism of accelerant in the phosphating solution was discussed