We have developed a simulation code which predicts the film thickness of the electro-deposition coating for automotive bodies. The time-dependent electro-potential distribution in the paint materials is predicted based on an electro-potential diffusion equation. As for descretization, we adopt the unstructured finite volume method. In order to verify the code accuracy, we have done a calculation for the electro-paint deposition experiment of a small box with 3 plates inside in it. The calculated results agreed with the test results very well not only qualitatively, but also quantitatively, especially in the range of 10 micron, which is included in the thickness criteria for automotive design. In addition, we applied the code to the real center pillar of an automobile. The analysis results mostly agreed with the results obtained from the experiment with the center pillar. This paper will describe the application case of this analysis code.
Development of Prediciton Methods for Film Thickness in Electro-Deposition Coating Process
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Komoriya, T, Shin, K, & Mohri, M. "Development of Prediciton Methods for Film Thickness in Electro-Deposition Coating Process." Proceedings of the ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. Volume 2: Symposia, Parts A, B, and C. Honolulu, Hawaii, USA. July 6–10, 2003. pp. 1269-1274. ASME. https://doi.org/10.1115/FEDSM2003-45142
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