Coating materials,coating processes,coating equipment,and coating management are the four major elements of automotive coating,which complement each other and promote the progress and development of coating processes and technologies.The 21st century is known as the new century facing the environment,and environmental protection has attracted global attention and has become an urgent research topic for humanity.The coating of automobiles and their components is one of the links in the automotive manufacturing process that consumes high energy and generates a lot of"three wastes".Therefore,reducing painting hazards,reducing painting costs,and improving painting quality have always been the themes of painting technology development.

　　In the past decade,the progress of coating technology and equipment has mainly been reflected in the application of environmentally friendly coating materials,reducing the discharge of wastewater and slag,reducing costs,and optimizing the automotive production process.Due to the advancement of coating materials,there has been revolutionary progress in the design of car body coating systems.Several typical new coating systems and technologies have been or are about to be used in industrial production.The current coating process and equipment in China are generally equivalent to the level of Europe and America 10 years ago,and some enterprises have adopted some internationally advanced new equipment on their new coating lines.Several new car body painting processes.

　　Reverse process process:Spray powder coating on the exterior surface of the car body first,wait for hot melting before electrophoretic coating,and then dry the powder/electrophoretic coating film together.Using this process can reduce the amount of electrophoretic coating by approximately 60%,with a thickness of 70μM's powder coating replaces the electrophoretic primer and undercoat on the exterior surface of the vehicle,canceling the undercoat and drying processes,thereby saving material and energy costs and reducing VOC emissions.