Coating process: coating process of powder coating on auto parts

The key points are as follows: powder coating has obvious advantages of environmental protection and energy saving due to its technical characteristics of 99% utilization rate and no emission of three wastes The following describes the application of powder coating in the car compartment and the coating process Characteristics of powder coating The powder coating is composed of resin, pigment and filler, curing agent and auxiliary agent It is solvent-free and has obvious environmental protection advantages According to different appearance, hardness, flexibility, chemical resistance, weather resistance and other performance requirements, epoxy resin and acrylic tree with corresponding performance characteristics can be applied Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Coating home news: powder coating has obvious advantages of environmental protection and energy saving due to its technical characteristics of 99% utilization rate and no emission of three wastes Powder coating can greatly reduce the coating cost of automobile body and parts The following describes the application of powder coating in the car compartment and the coating process Powder coating is composed of resin, pigment and filler, curing agent and auxiliary agent It is solvent-free and has obvious environmental protection advantages According to different appearance, hardness, flexibility, chemical resistance, weather resistance and other performance requirements, powder coatings of epoxy resin, acrylic resin, polyester resin and other systems with corresponding performance characteristics can be applied Epoxy resin system is hard and tough, which can provide excellent mechanical properties, chemical resistance and solvent resistance, but its thermal stability, light resistance and weather resistance are poor Polyester resin system has excellent thermal stability and weather resistance, which can be used in auto parts Acrylic resin system has good appearance effect and excellent light and color retention It can be used to prepare decorative coating on the exterior surface of car and truck body This paper introduces the technological process of coating automobile and its parts with powder coating There are mature application cases in foreign countries, but there is no application experience in China Its application in automobile production mainly includes two process routes, i.e the one for body coating and the one for parts spraying Among them, the process of body powder spraying is as follows: pretreatment → electrophoresis → drying → weld sealing → powder intermediate coating → intermediate coating drying (160-180 ℃ / 15min) → inspection and intermediate coating grinding → dust removal → powder surface spraying → drying (150-160 ℃ / 8-10min) → strong cooling → powder varnish spraying → drying (180-200 ℃ / 20min) → inspection and fine repair → offline For the plain paint, powder varnish spraying can be cancelled; if the quality requirements of the car body are general, the powder intermediate coating process can be cancelled For the carriage project, the powder coating process of automobile parts is adopted: pretreatment → electrophoresis → drying → weld sealing → powder surface coating and spraying → drying (180-200 ℃ / 20min) → inspection and fine repair → offline Among them, if the metal coating is applied, the method of surface coating and powder spraying line cycling for two times shall be adopted, i.e the first time powder metal coating is applied, and then after drying, it enters the surface coating and powder spraying line for powder varnish spraying and drying Powder coating process conditions 1 Compared with water-based coating spraying room temperature and humidity environment, powder spraying has no strict requirements on temperature and humidity The recommended best spraying process conditions are: temperature 18-25 ℃, relative humidity 40% - 60%, and spraying window management range is wide, as shown in Figure 1 The wind speed of the automatic section of the spraying room is 0.3-0.4m/s, and that of the manual section is 0.5-0.6m/s 2 The drying process conditions shall be selected according to the appearance decoration requirements Generally, the drying conditions of car parts are: 180-190 ℃, 20min Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,