Abstract: This paper describes how the water-based intermediate coating car body is introduced into the oil-based intermediate coating workshop,from the initiation of the project to the comparison of the technical requirements of water-based intermediate coating and oil-based intermediate coating,to the adjustment of the current equipment and the confirmation of the car body parameters after production. The application effect of water-based intermediate coating in the oil-based production workshop is verified through the actual test of burning curve of drying furnace,the adhesion test and hardness test. It provides a reference theoretical basis for the future production of water-based intermediate coating car body in oil-based intermediate coating workshop. In addition,this method can save a lot of equipment transformation costs and corresponding man hours.

Key words: water-based intermediate coating, oil-based intermediate coating, burning curve of drying furnace, film adhesion