What do you pay attention to?
In the rapid development of the automotive industry, in order to reduce the weight of the car itself, a variety of lightweight base material is more used by the car, such as plastic products, glass steel and so on. Due to the organizational structure of various materials with different degree of hardness, such as paint layer compared with the plastic to some hard, so it is the same as sandpaper polished plastic will be wiped out some results in the emergence of many, uneven phenomenon, due to very shallow depression layer is in a flat surface, so the putty adhesion is poor. And dry time is slow, difficult grinding. In this case, only the two fill method is used to solve the problem.
Considering the quality factor, quality of the primer must have good corrosion resistance, and the old paint film or metal layer has good adhesion, excellent filling force, smooth surface; from the construction perspective, quality should be applied to the body of the primer, vehicle repair and local repair; from the view of time and operation high quality, primer volatilization and shorter drying time and simple mixed paint; considering body material, quality repair primer should be used for the old paint, aluminum, galvanized steel, stainless steel, fiber, plastic products, hard wood, putty and other substrates.
1, the plastic bumper with 150-320# sandpaper, if the upwarping phenomenon in the injured, also with a knife will become warped skin scraping.2, in addition to oil, dust, after the proportion of the mixture of good ash fill the depression, to dry solid, first with 320-400# sandpaper polished, and then use 600-800# sandpaper grinding.3. After drying, place a primer newspaper at about 40mm of the ash.4, after removing oil and dust, with diluted primer (primer and quick drying diluent ratio of 1:1), empty spray again, dry and then spray again. In order to reduce the number of spraying and grinding time, it is necessary to ensure the smooth flow of primer, without flashing between each time. Dry the surface of the paint film, until the primer lose brightness, you can continue spraying, and then go round and round until you reach the thickness of the depression.5, in order to shorten the volatilization time, can use high temperature equipment baking, do not have to remove the newspaper, dry solid with 600-800# sandpaper to throw flat, but must not wear primer layer leakage.
