It is well known in the automotive coating process electrophoretic paint, which is essential to a drying step. Only after drying in order to obtain the best performance of the film, without causing the occurrence of "dry low" or "too dry" and other quality accidents. Otherwise automobile electrophoresis coating is not drying thoroughly, it will seriously affect the performance of the coating, such as coating adhesion, corrosion resistance, chipping resistance, scar shaped corrosion resistance, mechanical properties and resistance to chipping properties.
Therefore, for the above situation, the following Xiaobian to tell you about the drying process of electrophoresis coating cars:
1, the electrophoretic paint drying cars, technology must reach a predetermined drying temperature and drying time to fully complete curing, the coating to achieve the best performance. Otherwise electrophoretic paint drying temperature is low, insufficient drying time will result in insufficient curing, so that adhesion, corrosion resistance, mechanical properties deteriorate electrophoresis paint film; if electrophoresis coating drying temperature is too high or drying time, it is relatively easy to produce too dry, brittle film phenomenon, serious cases cause the coating off, the impact of lower adhesion of the coating.
2, the workpiece temperature automotive paint electrophoretic coating and drying time for curing, it is very important. Once below the predetermined temperature and the drying time can not be cured, it will seriously affect the film properties. Of course, if it is a different breed of cathodic electrophoretic paint cars, its drying temperature of the workpiece and the drying time is not something we generally can be determined based on electrophoretic coating manufacturer's recommendation and testing.
3, generally speaking, if it is at the lowest drying temperature and time, all of the coating on the metal body can all dry, and maintain excellent corrosion resistance, mechanical strength and adhesion, so the drying temperature and drying time can be considered suitable drying conditions. Usually by the production site should always observe the color change of the coating to determine the degree of drying of the coating. For example, when a body coating drying room is hot, do not smoke, non-stick, it means that the film is substantially dry.
Auto parts spraying equipment, spraying line car wheels, car bumper paint line