For a workpiece of the engine piston rings, gears, refrigeration compressors, it is not only withstand a load, but also the kinetic friction, the workpiece is required, anti-friction, abrasion. Manganese phosphate coating has high hardness and thermal stability, resistant to wear, phosphate coating has good anti-friction lubrication. Therefore, it is widely used in piston rings, bearings bearings, compressors and other parts. A phosphate treatment temperature of 70 ° C to 100 ° C, processing time 10 ~ 20min, the phosphate coating material 7.5g/m2 kind of wear-resistant anti-friction. In the cold industry, such as: to take over, drawing, extrusion, deep drawing processes, the phosphate coating provides less friction lubrication, generally using zinc phosphate, zinc phosphate coating saponification to form very good lubrication thezinc stearate layer, the zinc phosphating operation temperature is relatively low, in 40, 60 or 90 ° C under the conditions of phosphate treatment, phosphating time from 4 to 10 minutes, sometimes even tens of seconds, phosphateThe film weight requirements ≥ 3g/m2 can. The process is: 　　Wear and friction reducing the phosphating less friction lubrication phosphate (cold) 　　Degreasing rust degreasing rust 　　Water cleaning water cleaning 　   Manganese phosphate zinc phosphating 　　Water cleaning water cleaning 　　Dry saponification (sodium stearate） 　　Coated with grease dry