免水洗常温热镀锌表面磷化技术研究  

Study on Hot Galvanized Surfaces Phosphating Technology without Washing at Room Temperature

作　　者：欧阳君君[1] 周莉[1] 

机构地区：[1]深圳大学,深圳518060

出　　处：《表面技术》2012年第1期89-91,共3页Surface Technology

摘　　要：以磷酸、氧化锌、磷酸二氢锰、钼酸铵和硝酸钙等为原料,通过正交试验等方法开发了一种磷化后免水洗的常温热镀锌表面磷化液。研究了磷化液的pH值、磷化温度、磷化时间以及自干时间等对磷化膜质量的影响。结果表明:磷化液pH值为2.6～3.3,在5～40℃浸渍磷化7～10min,自然干燥3h可获得磷化后工件免水洗的磷化膜。磷化膜的耐蚀时间超过50s,喷涂铁红环氧底漆后的漆膜附着力达1级。A clean surfaces phosphating solution of hot galvanizing without washing was designed to H3PO4, ZnO, Mn（H2 PO4 ） 2·2 H2O, （NH4）6 MOT O24 · 4 H2 O, Ca （NO3） 2·4 H2O by orthogonal test method. The effects of different pH value, phosphate temperature, the self dry time, and phosphate time on the phosphating coating properties were analyzed. The results showed that when the pH value from a range of 2. 6 - 3.3, the phosphating temperature from a range of 5-40 ℃, the wash-free phosphate coating was obtained after being immerged in the phosphating solution for 7 to 10 minutes and drying for 3 h. The time of resist corrosion for phosphate coating was more than 50 s. Its cling force reached 1st grade after spraying epoxy resin antirust of iron oxide red..

关 键 词：磷化液 热镀锌 免水洗 常温 

分 类 号：TG174.45[金属学及工艺—金属表面处理]