Electrophoretic paint commonly encountered problems and solutions

　　I. Problems with electrophoretic paint

　　Coarse surface: The surface of the electrophoretic paint film is rough, with particles, bubbles and other imperfections, resulting in insufficient smoothness of the product surface and affecting both appearance and performance.

　　Pinholes and shrinkage: The electrophoretic paint film is characterized by small needle-like holes or local enlargement, which affects the appearance and may lead to customer complaints.

　　Color unevenness: The electrophoretic paint film exhibits uneven color distribution, with variations in color depth, differences in color, etc., affecting the appearance of the product.

　　Peeling and bubbling: The electrophoretic paint film has poor adhesion to the substrate surface, resulting in peeling and bubbling, which affects product performance and durability.

　　Acid reversion and discoloration: Electrophoretic paint may suffer from acid reversion and discoloration during storage or use, affecting product performance and appearance quality.

　　II. Solutions for electrophoretic paint problems

　　Control the electrophoretic paint formula and production process to ensure stable paint quality.

　　Perform surface treatment on the substrate to remove impurities such as oil and moisture, thereby improving the adhesion between the electrophoretic paint and the substrate.

　　Control the electrophoretic coating process parameters, such as voltage, current, temperature, pH value, etc., to ensure consistent and stable coating effects.

　　Perform appropriate post-treatment on electrophoretically coated products, such as baking, cooling, etc., to further improve coating properties.

　　For products that have already encountered problems, methods such as sanding and re-coating can be used for repair.

　　III. Summary

　　Electrophoretic paint is an important type of coating that is widely used in areas such as automotive, home appliances, building materials, etc. To achieve high-quality coating effects, it is necessary to strictly control the electrophoretic paint formula and production process, perform appropriate substrate treatment, adjust electrophoretic coating process parameters, and take corresponding solutions for repair and processing of already problematic products.