On-line anticorrosion technology of car body

Pretreatment technology of car body painting

The main purpose of car body painting is to improve the protection and decoration of car body, enhance the anti-corrosion ability of car body and improve the appearance of car body; In addition, the requirements for environmental protection at home and abroad are getting higher and higher. In order to reduce the pollution caused by automobile manufacturing more effectively and protect the environment better, automobile manufacturers are committed to the research and application of various new technologies, new materials and new equipment, and constantly improve the quality of car body painting. In order to enhance the adhesion between steel plate and body substrate coating and improve the corrosion resistance of body substrate, the surface treatment of body-in-white should be carried out before painting. The technology, materials, equipment and process management of surface treatment before painting in the second workshop of Chery Automobile Co., Ltd. are briefly discussed. Among various metal surface treatment methods, phosphating treatment technology has been widely used. The process flow is as follows:

Oil removal 1- oil removal 2- spray cleaning-impregnation-surface adjustment-phosphating-dust removal-drainage-impregnation-passivation-impregnation-spray cleaning

Each specific step has a certain explanation. Please go and see /showtopic-927.aspx for yourself.