关键词: 商用汽车；底盘；整体防护涂层；喷涂工艺；工艺优化

Abstract: In view of the personalized loading and configuration needs of end users, more and more commercial cars are put on the market in the form of chassis. During the waiting turnover and storage period of the installation, the chassis is exposed to the atmosphere for a long time, suffering from various environmental tests such as wind, rain and exposure, which brings the rust risk of the chassis turnover and storage period. In order to improve the appearance quality and rust resistance ability of the company's commercial automobile chassis, and enhance the market competitiveness of the products, this article compares and studies the four typical overall protective coating spraying processes of the commercial automobile chassis in the industry. According to the best selected spraying technology tissue test injection and market verification, a water-based dural chassis protective wax spraying technology is explored. The research results can be used for reference by the process technicians of domestic commercial vehicle production enterprises.

Key words: Commercial automobile; Chassis; Overall protective coating; Spraying process; Exploration technology optimization