Salient Features of Phosphating Chemicals:

* Removes thin films of oil
* Forms a light amorphous iron phosphate coating on ferrous and steel components.
* Frms zinc phosphate coating on galvanized steel surfaces by converting a part of the zinc surface into an integral zinc phosphate coating.
* Frms aluminium phosphate coating on aluminium surfaces. the phosphate coatings so formed will be a good base for subsequent liquid painting and powder coating.
* My be used as 3-stage, or 5-stage, depending upon type and degree of oils and superficial impurities.
* My be used by dip process, or by spray process
* In spray process, dwell time is 60 to 120 seconds.
* In dip process, duration of dip is 7 to 10 minutes.
* Build-up of iron phosphate coating: 50 to 60 mg./sq.ft.
* Build-up` of zinc phosphate coating on galvanized steel surfaces will be around 50 -150 mg/sq.ft.
* Build-up of aluminium phosphate coating: 50 to 100 mg./sq.ft.


Zinc phosphating: ZINPOFOR ZS (For both dip and spray)

Salient Features:
* Gives light, smooth, dense, crystalline zinc phosphate coating, firmly adherent to, and integral with the surface being treated.
* The build up of the coating is around: 100 to 400 mg/s.ft. the treated surface is ideal for liquid painting and powder coating for dip :
* Used at 5% concentration. dip duration 5 to 8 minutes. for spray:
* Used at 2% concentration. dip duration 90 to 180 seconds.