Phosphating Process

1- ALKALINE DEGREASING AGENT

The purpose of the degreaser is to remove all types of oil and grease from the parts. Without these the subsequent stage would not be possible.
The products used in the treatment of the surface are  alkaline and acid degreasers, not only due to facility of use but also because of their low cost. The composition and the nature of the degreaser vary according to the type of work. The so-called heavy alkaline agents  are used on steel or cast iron parts, and are ideal against thick dirt and dirt of a more severe nature; whereas the medium alkaline agents are used where contamination is only light. And the light alkaline agents are totally free of hydroxide alkalinity and are suitable for easily corroded metals and alloys, such as aluminum, brass, zinc etc.

At this stage the parts can be for immersion or spray in the hot degreaser.
Degreaser types: DXR 235; DXR 235 B; DXR SB 804; DXR SP 240

1- ACID DEGREASING AGENT    

The acid degreaser is a substitute for the heavy and medium alkaline degreasers.
At this stage the parts will be immersed in the cold degreasing bath; heating is not needed and the next stage of the rinsing process is eliminated.
Degreaser types: Hidrox