高精度電着塗装シミュレーションのための正確な塗膜抵抗・析出モデル

概要

論文の詳細を見る
Novel paint resistance and deposition models for numerical electrodeposition simulation are proposed. The paint resistance model considers the non-linear relationship between the film resistance and the paint thickness. The paint deposition model exactly takes account of the diffusive current which leads to the complex variation of the coulombic efficiency. Meanwhile, the Butler-Volmer equation is adopted as the polarization curve on the anodic and cathodic surface. A series of one-plate electrodeposition tests is performed to analyze the characteristics of the paint resistance and deposition behavior. The procedure for determining the parameters of the proposed models through the one-plate tests is also presented. The numerical simulation using the proposed models accurately reproduces the experimental results of the one-plate tests in comparison to the simulation using the conventional models. A series of 4-plate box electrodeposition tests is also performed; it reveals that additional improvements to the proposed models are necessary to simulate the deposition behavior under various stirring speeds.