At present, chromate passivation process with six or three valence is used for zinc plating. The government has strictly controlled the use of hexavalent chromate because of its high toxicity and carcinogenic potential. Trivalent chromium passivation also has many cracks, no automatic repair function, poor corrosion resistance and other problems.
After several years of development, the company has completed the development of the world's leading level of chrome-free passivating agent, the product has passed SGS environmental protection certification, after a large number of customers use, proved that the product not only less, good luster, stable tank liquid, and its corrosion resistance can be fully comparable with the chrome-containing passivating liquid phase.
I. Features:
1) Titanate passivating agent, free of chromium and other harmful heavy metals, completely environmental protection.
2) This product is suitable for all galvanizing processes.
3) The passivation film has high compactness, and the workpiece after passivation has very good aesthetics.
4) Small consumption, stable tank liquid.
5) Tank liquid control is simple, easy to operate, can use acid-base titration for tank liquid control.
6) The passivated galvanized sheet can be directly sprayed in the later period, with strong adhesion.
7) The wastewater treatment is simple and can be discharged directly after neutralization.
Two, technical indicators
1) PH value: 2.7-3.2 (can be monitored with test paper)
2) Usage: 3%-10%
3) Tank liquid temperature: normal temperature
4) passivation time: manual passivation 2-10 S automatic passivation 10-30 S (use of appropriate reduction) roller spraying 1-3 S (applicable to galvanized steel strip) zinc alloy passivation 1-3 minutes
Iii. Packaging and transportation
25KG reinforced plastic drum packaging, according to the general chemical transport can be stored in a cool dry ventilation place.
