HY-2100 at room temperature zinc phosphating agent instructions 
 This process is suitable for surface treatment before coating of iron and steel products, the product surface to generate a gray phosphate laminating layer does not dissolve in water, in order to improve the adhesion of the coating on the metal surface, and inhibit corrosion under the coating film. Treatment by immersion and spray methods are carried out at room temperature. 
 Supply of zinc phosphating agent | Wuhan bonderite 
 Process 
 Degreasing → washing → washing → rust → washing → washing → → Table tune phosphating → washing → drying or drying → spraying. 
 A. the bath: 
 Working volume calculation phosphide pool m3, the first injection of 3/4 Chi Qingshui joined the HY-2100 bonderite 100kg Stir well after adding neutralizer 3 to 4 kg/m3, to promote the agent 2kg/m3 stir the detection of phosphorus The free acidity of liquid, and then the neutralizer to the free acidity is adjusted to 0.6, add water to the work surface. Early preparation of the phosphating solution is not ideal, some of the treatment effect of the workpiece may need to enter the steady-state after a short-term "maturity". The ripening process is treated with phosphating solution with the beginning of the steel surface (approximately 50 to 200 m2/m3), light brown when the phosphating solution, and FePO4 alum, the maturation is basically completed, when the phosphate film the appearance of and protection will be further improved, to enter the steady-state solution. 
 Technical indicators and processing conditions: 
 Technical indicators of treatment conditions 
 (%) 5-8 phosphating temperature (° C) at room temperature in the ratio of the amount of 
 Total acidity (points) the phosphide time by 25 to 45 (min) 5 ~ 15 
 Free acidity (points) the 0.3-0.7 processing area (m2/KG) 20 ~ 30 
 Accelerator 2.0 ~ 4.0 bath the appearance of green transparent liquid