An electric current distribution analysis program "Electroplating Pilot System" (EPPS) was developed, and has been sold. As an expansion of EPPS, a new program using Finite Element Method (FEM) that allows to calculate thickness distribution of electrodeposition coating was developed. By introducing new thickness calculation parameters that consider special characteristics of electrodeposition coating, practical thickness calculation precision was possible to obtain. The experiment method to obtain thickness calculation parameter and parameter determination method based on experiment data were indicated. Also, constant voltage coating test on flat plate and analytical result of the test were compared. Both total current and thickness on each test matched well.
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