Car painting is a very normal thing, after all, anyone who drives will inevitably have scratches, so Is there any kind of spray paint that the paint thickness gauge cannot detect?
To be conservative, say that 99% of the chances can be detected by the paint thickness gauge . Why do you say this?
1. The accuracy of the paint thickness gauge
The principle of the paint thickness gauge is to use the magnetic effect or the eddy current effect to sense the metal substrate of the component, and the substrate is often an anti-corrosion layer. The distance between the paint thickness gauge probe and the substrate metal is the thickness of the paint thickness Value.
At present, the mainstream accuracy of the paint thickness gauge can be controlled at 1±2%. At present, most of the original car paints thickness on the market are around 100 μm, so we can completely identify it by the value of the paint thickness gauge.
2. Why we say that spray paint can't fool the paint thickness gauge ?
The spray paint of the car is sprayed with a robotic arm in the dust-free workshop. It can be precisely controlled how thick or thin you want to spray. But we went to the repair shop outside to do spray painting, even without body filler or put putty, because the thickness of the paint thickness with putty can range from a few hundred to thousands.
The owner of the auto repair shop can spray paint, although the steps can be the same as the robotic arm, spray primer, then paint, and finally spray varnish. However, it is difficult to control the spray amount, that is, the thickness of the paint surface, even if it is an excellent master, it is difficult to achieve the uniformity of the robotic arm spraying of the automobile factory.
3. Add metal putty to deceive the paint thickness gauge
Adding metal putty powder instead of ordinary putty can deceive the paint thickness gauge in principle, but with the introduction of the fourth generation of paint thickness gauge by Guoou, Even people use metal putty to repair the car ,our device also can detect it .