In order to remove various foreign substances (oil, rust, dust, etc.) attached to the surface of the object, to provide a good substrate suitable for painting requirements, to ensure that the coating film has good anti-corrosion properties and decorative properties, and the surface of the object is treated before painting.
Why it need to Pre-treatment?
1.Removal of various impurities from the workpiece surface.
2.Protection of the cleaned surface of the workpiece before the next process.
3.Provide a proper surface for the adhesion of coatings.
4.Form a composite protective layer with the coating film to improve protection.
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