Automobile industry coating system

Introduction: Coating line includes: pre-processing, electrophoresis, spray paint (spray), drying and other components. Pre-treatment includes: spray systems, such as diving style. Include spray paint, spray paint with wet pad. Drying by gas, oil, electric heating, etc.. Paint coating line used motorcycle parts, automotive parts coating, coating materials, household appliances parts form. Painting is generally based on the production of customer products and production to design. Coating line is designed to be flexible according to customer design requirements. Coating materials, coating technology, coating equipment, coating plant and utility power plants, painting and management are all factors that directly affect the coating quality, must rely on high-quality management and high level of automation to ensure coating quality . As the large body coating line technology complex, investments, and the importance of process design must pay close attention. With the development of automobile manufacturing technology, coating technology design are moving in the energy saving, environmental protection, a high degree of automation and the use of high-quality, high-level direction of the coating process, by continuously understanding and introduction of foreign body. Painting of the latest technology, greatly improved the level of our body coating line. Coating line described some of the design process design ideas: 1,body painting technology trends From the mid-80s of the 20th century, European and American countries have enacted environmental laws. Since 1993, the same European countries began to restrict car painting line in volatile organic compounds (VOC) emissions and to provide new body in 1997 after its volatile organic compound coating line shall not exceed 45g/m2; German air purification standard requirements, the new body of volatile coating line no more than 35 g/m2. In order to meet emission standards, made of foreign body paint industry to reduce volatile organic compound coating line coating technology development. Body coating line typically use the "three-coat" paint process. According to the standard auto body coating to determine the different coating with different coating processes. At present, the United States and Europe are the new body painting line uses water-based paint or water-based paint coating process the coating plus powder coating process. Table 1 in a variety of auto body painting process is the future direction of development of painting technology. Now water-based paint coating process in the European car body painting process, has occupied the mainstream, the coating quality close to the traditional solvent-based paint quality. With the increasing requirements of environmental protection, the international body coating process is to use the main trends in the development of water-based paint or powder coating gradually replacing the traditional solvent-based paint. 2, the importance of process design Process design will directly affect the product quality, production efficiency and production costs. Coating process design is to determine the process design of the entire process. It is based on standard products, coatings, production platforms and production logistics, through the use of the process and the selection of coating materials, coating equipment, coating plants, public power facilities and auxiliary facilities optimized to achieve. Technological design process and the process should pay attention to layout, if the choice of materials and equipment technology and design inappropriate, you can also change. However, improper selection process and process layout, layout unreasonable to endless trouble. The consequences are generated in the production process can not solve quality problems, running costs, low economic efficiency, can not meet the national requirements of various regulatory requirements. Therefore, we must attach great importance to process design, and be carefully designed. 3, the basic principles of process design 3.1 Logistics reasonable Painting the logistics process design, including the production of parts and a variety of materials, logistics, materials and waste logistics. Production parts logistics should be selected to run the short routes and try to avoid running routes cross. For multi-partition layout should minimize product movements and movements. The process should be arranged reasonably good convergence, and the station layout should be compact. A variety of materials, materials and waste logistics transportation routes should be selected short, try not to operate through the production area, storage space as close as possible to use location. Use of logistics and transport equipment or tools should be economical and reliable. 3.2 three-dimensional, regional arrangements decorative body painting have become increasingly demanding. Painting the cleanliness of the environment is important to improve the conditions of decorative painting. Therefore, the process design should be three-dimensional, regional hierarchical partition layout of equipment and ancillary facilities. That is different for different processes and process requirements, to ensure the cleanliness of the body with different decoration requirements. Should be set to spray clean area, general cleanliness of the area, drying area and the supply and exhaust equipment area. As far as possible support facilities located in the bottom, painting operations are located in the middle, supply and exhaust equipment was set up in the upper; drying area in the middle or upper class, supply and exhaust equipment area and drying area with a wall close as possible to prevent noise and heat diffusion to affect other regions. 3.3 off-line repair and quality sampling of surface coating products set high quality requirements, in each process section (electrophoresis, in the coating, paint, etc.) must be set offline repair station to ensure the timely repair substandard products. In polyvinyl chloride (PVC) and finish setting behind the quality of sampling (Audit) station, in the electrophoresis, the coating and finish strong cold room set behind the quality of feedback inspection station to ensure product quality and meet quality information and timely feedback purpose.