Automobile chassis coating process

• Main Authors: YANG QIANZHI, LIU ANXIN, LAN HUA, YU RUISHENG, XIAO DI, LI WEI, TIAN XIAOLONG, LU HAIBO
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2022
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MOTOR VEHICLES; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TRAILERS; TRANSPORTING

The invention discloses an automobile chassis coating process. The automobile chassis coating process comprises the following steps: spraying primer on a frame spare part subjected to surface pretreatment; assembling the frame spare parts sprayed with the primer into a frame assembly; intermediate paint is sprayed to the frame assembly; primer, intermediate paint and finish paint are sequentially sprayed to the key parts subjected to surface pretreatment; the frame assembly and the key parts are assembled into a chassis assembly; and finishing paint is sprayed on the chassis assembly. According to the automobile chassis coating process, the problem that a bolt connecting part of an automobile frame is easy to corrode in a high-salt and high-humidity salt mist environment due to a coating process of firstly assembling and then spraying is solved. 本发明公开了一种汽车底盘涂装工艺，包括：向表面预处理过的车架散件喷涂底漆；将喷涂有底漆的车架散件装配成车架总成；对车架总成喷涂中间漆；对表面预处理过的关键零部件依次喷涂底漆、中间漆、面漆；将车架总成和关键零部件装配成底盘总成；对底盘总成喷涂面漆。该汽车底盘涂装工艺避免了先装配再喷涂的涂装工艺导致汽车车架的螺栓连接部位在高盐高湿的盐