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我厂高速钢缩杆用传统磷化工艺很难形成理想的磷化膜,经改进,取得了较商质量的磷化膜,满足了产品要求。工艺流程如下:装筐→除油→热水洗→酸洗→十冷水冲洗→热水冼→磷化→热水洗→中和→皂化→干燥→检验。主要工序配方: 磷化,H_3PO_4 25～30ml/L,ZnO 9～10g/L,NaNO_2 0.3～0.4g/L,其余H_2O;使用温度,80～85℃;时间:30～50min 除油:Na_zCO_3 70～80g/L,Na～3PO_4 70～80 g/L,NaOH 90～100 g/L,Na_2SiO_3 15～20 g/L,余H_2O;使用温度:90～100℃, 时间:20～30 min 中和:Na_zCO_3 90～100g/L,其余H_2O;皂化;工业皂化200～250g/L,其余H_2O,使用温度,50～60℃,时间:15～20min。操作中的几点经验:
Our factory high-speed steel shrink rod with the traditional phosphating process is difficult to form the ideal phosphate film, improved to obtain a more commercial quality phosphate film to meet the product requirements. The process is as follows: Loading baskets → degreasing → hot water washing → pickling → ten cold water washing → hot water washing → phosphating → hot water washing → neutralization → saponification → drying → testing. The main process recipe: phosphate, H_3PO_4 25 ~ 30ml / L, ZnO 9 ~ 10g / L, NaNO_2 0.3 ~ 0.4g / L, the remaining H_2O; temperature, 80 ~ 85 ℃; time: 30 ~ 50min degreasing: Na_zCO_3 70 ~ 80g / L Na ~ 3PO_4 70 ~ 80g / L NaOH 90 ~ 100g / L Na_2SiO_3 15 ~ 20g / L, more than H_2O Temperature 90 ~ 100 ℃ Time 20 ~ 30min Neutralization : Na_zCO_3 90 ~ 100g / L, the remaining H_2O; saponification; industrial saponification 200 ~ 250g / L, the remaining H_2O, temperature, 50 ~ 60 ℃, time: 15 ~ 20min. Some experience in operation: