Zinc phosphate coating

Product Description

IC－*****1Znic-Series phosphate coating agent

1. Overview

  IC******1 phosphate coating agent assigned two kinds including IC******1A for preparation and IC******1B for adding, which is little-sediment and low-temperature phosphating agent for surface phosphating of iron and steel parts, cold-rolled sheet. There are some advantages, such as low-temperature, fast filming, little sediment, light pollution. Phosphate coating is thin and firm, dense and uniform, and nuclei is small. The product is suitable for large-scale spraying line or the combination of spraying and dipping with strong processing capability.It is the representative product of high-quality products bonderite developed by our company.

2. Using method

2.1 Tank liquor preparation (1 ton)

a. Tank reagent:  IC******1A zinc-series phosphate coating agent

               IC******1B zinc-series phosphate coating agent

               NT***5 neutralizer

               AC****1 accelerator

b. First, add water to tank with *0 % of the capacity of tank. Second, add NT***5 neutralizer of 4.5 to 5.0 kg. Third, add IC******1A of *0 kg and stir evenly until flocculent precipitate was completely dissolved. Finally, adding margin water, and stir evenly. Confirm process indicators , heat to processing temperature. Before using, add AC***0 accelerator of 1.6 kg and stir evenly.      

2.2 Tank liquid management

Total acidity: *8 to *6

Free acidity: 0.9 to 1.8

Accelerator: 2.0 to 5.0

Temperature: Dipping: *5 to *5 degrees 

Spraying: *5 to *5 degrees

Time:  Dipping: *5 to *5 minutes  

           Spraying: 2 to 4 minutes

Spraying pressure: 0.6 to 1.0 kg/cm2.



5. Notes

5.1 Degreasing and derusting must be completely thorough. If phosphate film is not an ideal addition, the workpiece can be immersed in pickling bath to remove the film (must be remove completely), and then make phosphating coating again.

5.2 After water rinsing process, workpieces cant be maintained too long time in the air to prevent rust, and the water of washing tank should flow in order to ensure the quality of water.

5.3 Test TA and FA twice one day. Accelerator is consumed quickly, usually test it twice one day.

5.4 Phosphating workpieces should be dried at **0 to **0 degrees after water rinsing , which can increase erosion resistance. Natural-drying isnt a good method.

5.5 Copper sulphate spot test should be done after the workpiece was naturally dried and *2 hours and the film was fully formed. Corrosion time is greater than *0 seconds.