Metal Pre-Treatment

Metal Pre-treatment prior to powder coating is essential step to ensure proper coating performance. Metal Pre -treatment prior to powder coating is of two types.

• Mechanical Surface Preparation
• Chemical Surface Preparation

For powder coating most commonly used surface preparation method is chemical pre-treatment. It is essential for an applicator to know the following:

• Need for Pre-treatment
• Surface Preparation

Need for Pre-treatment

The performance of powder coating on a metallic surface mainly depends on Proper Pre-treatment of the substrate. Proper pre-treatment is an essential factor because of the following advantages:

• Pre-treatment process provides a clear, uniform, oil-grease free surface
• Provides good adhesion of film
• It forms an inert layer which inhibit the corrosion of the paint film

Surface Preparation

The general pre-treatment process for surface preparation follows the sequence as below. Click on these link for more process details:

• De-Greasing Process
• First Water Rinse - Regular Water Rinse
• De-Rusting Process
• Second Water Rinse - Regular Water Rinse
• Activation Process
• Conversion Coatings
• Final Water Rinse - Regular Water Rinse