Streaks or shadows on car paint refer to the difference in color depth on the surface of the topcoat layer, often in parallel status. There's a relatively high chance of streaking or shadowing on the silver paint and pearl paint. 1.Improper car paint thinning operation, not adding thinner according to the manufacturer's requirements; 2.When spraying paint, the coverage is uneven, and the sprayed paint via the
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There are many cumbersome procedures for auto refinishing, and it is relatively easy to cause defects with the paint surface after painting. Let's talk about sandpaper marks expansion today. As the name implies, it means that there are obvious sanding marks on the surface of the automotive paint. so why happens? 1. After the bottom layer is sanded with coarse sandpaper, the sandpaper marks are not filled with putty o
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Sagging refers to the phenomenon that there are traces of auto paint liquid flowing downward on the coating film. Mostly appear on vertical surfaces or corners. Generally, those that appear on the vertical surface are curtain-like sags, and those that appear on the corners are tear-stain-like sags. The reasons are: (1)Excessive thinner or incorrect thinner is used, so that the viscosity is lower than the normal constr
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During the painting process or the drying process of the paint film, due to the expansion of the paint surface, some areas will form bulges, and the bulges have different shapes. The reasons is as below: 1. The substrate is not clean. There are still dirty things such as oil, dust or wax on the surface of the substrate, which will cause the newly sprayed paint to fail to adhere under the influence of the interlayer
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Undercoat rust refers to the appearance of tiny speckled rust spots on the surface of the paint film shortly after application. At this time, it should be repaired as soon as possible, because the rusted part will be slowly oxidized and corroded, resulting in a larger rusted area. So what is the reason for the formation of rust? 1. The surface treatment of the car body before painting is not cleaned thoroughl
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When car scratch repair, why need to paint the whole car paint? 1. Prevent the layer boundaries of new and old paint surfaces: If you simply spray paint locally at the scratched position, there will be a more obvious boundary between the new and old paint layers due to the passage of time. Old car paint will turn yellow under long-term exposure to wind, sun and rain, an
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How to distinguish metallic paint from pearl paint? There are various brands of cars, and there are many differences in the colors of cars. The more common metallic paints on the market are mixed with metal powder in the paint, so that the sprayed sheet metal parts look sparkling. From the angle, you can see that the color of the car has changed, making the whole car look more beautiful and beautiful. This is why m
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Car Body Repair: 1. Preparation materials: 800 grit sandpaper, 2000 grit sandpaper, water, test spray base plate, car body color primer. 2. First use 800-grit sandpaper to polish the scratches, and rinse the warped paint and damaged parts roughly smooth while polishing. There will be some thin streaks after grinding with 800-grit sandpaper, which requires continuous polishing with 2000-grit sandpaper. Pay
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Paint Spray Defects - Paint Sinking: The patched area is sunken and the topcoat surface creates a "lake" shaped appearance. (1) Causes: ① When spraying multiple layers of paint, the previous layer of paint is not dry enough. ② The putty sinks, but it is not easy to be found when spraying a low-gloss primer, but when spraying a high-gloss topcoat, the paint s
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The structure of pearl color paint. 1. The color of pearl is composed of mica and titanium dioxide. Therefore, mica is composed of very thin mica stacks, Due to the viewing angle, its color is also different. Layer by layer, the incident light is reflected, absorbed and transmitted, resulting in subtle changes. This is called "multiple reflection". Unlike ordinary objects, light only Reflected by the surfac
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What Causes Paint Cracks? The paint surface is seriously tarnished, and there are many small cracks on the topcoat layer, which are similar to the cracks in the soil in a dry pond. The cracks often appear in triangular, star-shaped or irregular radial shapes. Cracking generally occurs in the finish coat, and sometimes penetrates into the inner coat. (1) Causes: ①The paint layer is too thick
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Paint sandpaper marks expansion! Meaning: There are obvious sanding marks on the painted surface. (1) Causes: ① After the bottom layer is sanded with coarse sandpaper, the sandpaper traces are not filled with putty or primer. ② Improper thinner or thinner ratio is used, and the thinner in the newly sprayed topcoat will penetrate into the old paint layer, which will exp
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Is the car paint film etched by acid? There are rough spots on the appearance, and the edges of the spots are sunken into the paint film due to acid etching. Sometimes the color of the paint film changes and the paint surface is uneven. (1) Causes： ① Corrosion of acidic substances such as asphalt, insect corpses and industrial pollutants on the road surface, or grease such as brake fluid s
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How to deal with " pinholes " after car paint spraying? "Pinholes" are also called pits, which are densely packed small holes that appear in the paint film. (1) Causes: ① The compressed air used for spraying contains moisture, or the wrong type or quantity of thinner is used in the paint. ② Excessively thick wet coating, or forced drying with a hair dryer, or the temperatur
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Paint markings: Also known as silver powder blooming, this is a common problem with silver color paint and pearl primers. The paint film appears to have been hammered, with some dark rings surrounding lighter silver powder or varying shades. If it is in the base coat, this phenomenon is often not found until after the clear coat is sprayed. (1) Causes: ①Silver color paint is compos
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Automobile paint production process Car paint is divided into two types according to the spraying process: One is a single process and the other is a double process. The single process is ordinary paint, and the metallic paint is a double process. Metallic paints provide particles that contain aluminum powder to give the car a good look. However, the metal paint must be sprayed with varnis
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