Process stage for Ed Coating
stage 1. Manual cleaning by solvent for dust & excess oil removals
stage 2. loading for auto line process
Stage 3. degreasing chemical -non-caustic alkaline cleaner compound chemical . Operating temperature of 20ºC t0 30º C.suitable for mild steel brass aluminum,copper & steel also. its applies cleaner to remove light surface oxides as well as any remaining lubricants.
stage 4. Running water rinsing Ambient operating temperature. This stage removes soils loosened by cleaner as well as removing cleaner residue
stage 5. De ionized Rinse Conditioner -DI Rinse Conditioner Ambient operating temperature. This stage prepares the cast/metal surface to accept the Hazard free non phosphate coating,
stage 6. User friendly,environment friendly ,Hazard free non phosphate coating- For multi metal system based , Chromium 3 generation Produces uniform, compact nano size base coating for excellent corrosion resistance and adhesion protective coating free of phosphates, nitrates, zinc, nickel, manganese and VOC with RoHS(EU Directive 2002/95/EC) & WEEE (EU Directive 2002/96/EC) & ELV compliance . Continuous chemical movements & spray for 02 solubility in chemical available here.
Stage 7. Ultraviolet water treated De ionized Rinse .Ambient operating temperature. This stage removes the salts and stops coating reaction .It lowers the surface conductivity of the part to prepare it for e-coating
stage 8. ELECTROCOAT BATH- temp. 18 witH 2% UP/DOWN-applying coating in bath.The electrocoat bath and ancillary equipment zone is where the coating is applied and the process control equipment operates. The electrocoat bath consists of 80-90% deionized water and 10-20% paint solids. The deionized water acts as the carrier for the paint solids which are under constant agitation. The solids consist of resin and pigment. Resin is the backbone of the final paint film and provides corrosion protection, durability and toughness. Pigments are used to provide color and gloss.
In cathodic electrocoating, the product is given a negative charge, attracting the positively charged paint particles. The negative electrical charge of the metal part attracts positively charged paint particles. Reversing the polarities used in the anodic process greatly reduces the amount of iron entering the cured paint film and enhances the properties of cathodic products. Cathodic coatings are high-performance coatings with excellent corrosion resistance and can be formulated for exterior durability.
stage 9.PERMEATE RINSE 1st-DI Water. Ambient operating temperature. This stage removes excess e-coat from the parts. It counter flows paint solids back to the e-coat tank to enable a high efficient operation
stage 10.PERMEATE RINSE 2nd-DI Water. Ambient operating temperature. This stage again removes excess e-coat from the parts. It counter flows paint solids back to the e-coat tank to enable a high efficient operation.
stage 11. PERMEATE RINSE 3rd-DI Water. Ambient operating temperature. This stage removes excess e-coat from the parts. It counter flows paint solids back to the e-coat tank to enable a high efficient operation
stage 12.PERMEATE RINSE 4th-DI Water with permeate comes from ultrafilter. Ambient operating temperature. This stage removes excess e-coat from the parts. It counter flows paint solids back to the e-coat tank to enable a high efficient operation .