Coating process: Automobile repair and painting process

Core tip: car owners need to take care of the car when they buy it, but they should also understand that the car body is easy to scratch and the paint is easy to damage, even when they wash the car Many car owners are very concerned about paint related issues Apart from the difference between water-based paint and paint in terms of environmental protection, what's the difference between 4S shop paint and automobile factory paint? Which film is stronger? Vendor difference Car paint is usually baking paint In the car factory, after the welding of the car body or shell is completed, the next process is painting Painted part Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Paint Home News: car owners need to take care of the car when they buy it, but they also need to know more about how easy it is to scratch the body and paint, even when washing the car Many car owners are very concerned about paint related issues Apart from the difference between water-based paint and paint in terms of environmental protection, what's the difference between 4S shop paint and automobile factory paint? Which film is stronger? Manufacturer difference automobile spray paint is generally baking paint In the car factory, after the welding of the car body or shell is completed, the next process is painting The first coat of paint is primer First, dip the bare car shell into the paint tank, fully soak the primer, and then take it out for drying After that, the car shell with full primer is sent to the dust-free workshop, and the electrostatic spray painting process is adopted to spray the upper paint There are three kinds of top coat: common paint, metallic paint and pearlescent paint Common paint mainly consists of resin, pigment and additive; metallic paint has one more component - aluminum powder The car paint added with aluminum powder has a fuller and brighter luster; pearlescent paint is added with mica particles in metallic paint Mica is a very thin piece of material, reflective directionality, can make car paint produce colorful effect The third process is paint baking The paint baking room with a temperature of about 200 ℃ will dry the car body For ordinary vehicles, the painting work is finished However, high-end luxury models, such as Mercedes Benz, will be coated with another layer of varnish The metallic paint is sprayed with varnish, and the body luster is more luxurious and beautiful There are often car owners have such questions: why does the 4S shop need to repaint the whole car body in order to make more profits? It makes sense to do so in order to reduce the chromatic aberration as much as possible For example, if there is a place on the door that needs to be mended, the upper half or the lower half of the door should be fully sprayed with anti scratch strip as the boundary In this way, even if there is a small color difference, it is easy to see the color difference after repair At present, some professional auto repairers adopt a "quick baking first aid" paint repair process, which is very popular with car owners According to Yang Mingjun, chairman of Beijing Youfu Automobile Beauty Co., Ltd., this process was introduced from the United States, with quick scratch repair and immediate success It is completely completed by special materials and tools and rigorous processes Professional scratch quick repair, the first requirement is the working environment In addition to professional baking room and computer paint mixing equipment, and fast drying of special materials is an important condition to ensure fast scratch repair Traditional putty is a plastic component, which has rough surface, low hardness, large shrinkage, easy deformation, and long drying time Especially, this kind of putty absorbs moisture continuously after repair, and is prone to crack and sink Youfu company introduces the high-tech metal filling soil from the United States It is solid and resistant to high temperature In addition, the quick dryer can completely dry in 5 minutes Moreover, it is a polymer structure with large density, fine surface, no pinholes, and won't absorb moisture One of the advantages of this putty is one-time molding After adopting the "quick bake first aid" touch up process, Youfu company can take the car within 40 minutes without secondary polishing for the touch up of general single scratch, which greatly shortens the maintenance time Many readers are more concerned about which paint film is stronger Generally speaking, the water-based paint has both advantages and disadvantages compared with the paint The anti-oxidation ability of the water-based paint film is stronger, but the paint film is slightly delicate According to Yang Yuguang, general manager of China Pompeii Management (Shanghai) Co., Ltd of PPG industry group, the second largest paint manufacturer in the world, the additive composition in the paint film has a very important influence on the color fastness of the paint With the rapid development of water-based coatings, the light stabilizer and antioxidant added in them have reached or even exceeded the oil-based coatings The type and quality of additives determine the color and color fastness of coatings Although there is no non fading paint, but more importantly, whether it can fade evenly and try not to cause color difference in different parts of the car In this respect, the additives of waterborne coatings are more advanced and more diversified Consumer tips on how to identify the touch up process for the level of touch up paint of various auto maintenance companies, consumers can hardly judge The simplest identification method is: the repair paint process after leaving the factory, although the baking temperature requirements are relatively low, does not mean that baking is not required If it is found that the maintenance company does not have a special paint drying room, it only uses the "little sun" lamp to heat and dry, which shows that not only the technology level is too poor, but also the color matching level is not so good Another important point is that the paint spraying in the car factory is carried out in the dust-free workshop, which is an important guarantee for the color fastness and uniformity of the car paint If the repairer does not have a special painting and baking workshop, but repair paint in the workshop or open space with large dust, it is recommended to leave resolutely Otherwise, even after spraying, the effect is good It will not take long for the paint surface to blister and peel Many people like to buy cars with pearlescent paint when they buy cars, but once they need to repair the paint, there will be a lot of trouble Because the directionality of the finished paint cloud masterbatch is very difficult, or it is almost impossible to be consistent with the original direction If the direction is not consistent, the color will be significantly different Even if the same paint, even if there is no color difference, the paint can be seen at a glance Different scratches should be treated differently In view of the high requirements of touch up paint technology, there is a slight scratch on the general paint surface It is suggested that there is no need to touch up the paint, and wax can cover it For the more serious ones, polish them with a wool wheel to remove the scratches Once the scratch shows the primer, it shall be treated differently according to different parts If the paint surface of bumper, rearview mirror and wheel cover is damaged, the components used are engineering plastics, which will not rust, so it is unnecessary to spray; if it is metal parts, it is necessary to touch up the paint Otherwise, even if it is a small damage, the steel plate will rust, even if the paint repair is also very difficult to rust 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,