Amino resin modified zirconium salt pre-treatment and electrophoresis matching car body coating process

The invention discloses an amino resin modified zirconium salt pretreatment and an electrophoresis matching car body coating process, and relates to the technical field of car body surface decorationand protection. The processed car body with a large proportion of cold-rolled sheet comprises a car body cold-rolled sheet with an area of 40-65%, a body galvanized sheet with an area of 0-60%, and acar body aluminum sheets with an area of 0-60%. The weighted sum of the area of each sheet is 100%. The process of processing the large proportion of cold-rolled plate comprises the steps of degreasing, firstly multiple washings, amino resin modified zirconium salt treatment, secondly multiple washings, electrophoresis treatment, UF washing, finally multiple washings, and baking. The coating process can reduce a certain cost on the basis of ensuring the quality of the surface treatment of the car body. 本发明公开了一种氨基树脂改性锆盐前处理与电泳配套的车身涂装工艺，属于车身表面装饰及防护技术领域。其中，处理的具备大比例冷轧板的车身由面积占比40～65％的车身冷轧板、面积占比为0～60％的车身镀锌板及面积占比为0～60％的车身铝板组成，