How to identify piano paint and car paint

Car paint without fingerprints, piano paint easy to touch fingerprints. Compared with ordinary bright paint, piano paint has two essential differences: — —
First, a piano paint primer layer is very thick, in fact, the real piano paint surface, if smashed, will crack like enamel, but not as common as peeling paint;
Second, the piano paint is the paint process, rather than spray painting process, after a high temperature curing process.
Because of this difference, therefore, compared with the ordinary painting, piano paint in brightness, compact especially stability is much higher, if the damage is not mechanical, piano paint surface after years is still bright, while the average brightness of painting has long been oxidized view of osmotic involution. But because of this complex process, the cost of piano paint is extremely high.
Well, the cheap “ the piano paint ” what is it?
In fact, “ polyurethane paint; spray paint ” process. Finish component in the paint and paint (paint the piano piano paint used for &ldquo ” unsaturated polyester paint;) is very close, but compared with the piano paint process, this process is not without primer spraying, paint process, without high temperature curing process, and the stability of polyurethane paint itself as unsaturated polyester paint. Its actual cost, probably only the real piano paint 1/5 to 1/10! The vast majority of &ldquo we see: piano paint, ” this is all.
From the outside, people without experience is difficult to distinguish between these two kinds of process, but after 1-2 years later, polyurethane paint will lose the original luster, become gray, and the piano paint will not have too big change.
Another kind of "&ldquo"; the piano paint ” in fact, just spray a layer of bright varnish on the PVC, the cost is insignificant, and the durability is very poor. In addition to “ bright ” with the piano paint is not sticky at all points.
Car paint is usually baking paint. (inside the car plant, not the maintenance station) the frame and the shell are welded (and sometimes repaired manually), and the next step is painting. Generally speaking, first of all, it is primer. Immerse the light hull in the paint slot of the electrophoresis bath, remove the drying primer, then send it to the dust-free workshop and spray the paint with the electrostatic spraying process. Then, use a temperature of about 200 degrees to dry. A little more paint, and a coat of varnish. So the paint process has been done. There are several general finishes: ordinary paint; metal paint; pearlescent paint. No paint, no resin, no paint, no additives. Metal paint is more aluminum, so it looks bright after it is finished. What about pearlescent paint? It's made of mica. Mica is very thin pieces of things, therefore, the reflection has directional, there will be a colorful effect. If it's a metal paint with a coat of paint, the paint will look very bright and beautiful. What about the color? White is undoubtedly the cheapest. For example, the world - class brand is about 25 times more expensive than the world - class brand of titanium dioxide, while the amount of titanium dioxide used in white paint is about 5 times that of the red pigment. Therefore, the cost of red paint on color is 5 times higher than that of white paint. This is why some domestic cars have so few varieties: simple and low in cost.
Piano paint: piano shell is wood, first lay putty, sanding, re fill putty, sanding, then do color, primer spraying (wood primer is colorless and transparent) and sand wool, spray paint (a colorless and transparent color paint and also have wood) is natural drying, cold regions in 40 low temperature drying.