Taking history as a mirror, the rust of rose gold on sand board is not necessarily a material problem. Many decorative board manufacturers said that the rust problem after the sand board is plated with rose gold or titanium is not only today, nor is it because J3 replaces J1. It appeared as early as a few years ago, but only recently. Then concentrate on eruption. In fact, even if you use 304 to do such a process, no matter what place you are from, this will happen. It can be said that this is an issue left over by history and is extremely difficult to change. We tried to compare 304 from various places of origin. After playing the spectrum, we should observe whether it is a material problem. Which steel mill will have a lower rust rate and a slower rust rate, but later we found that it is not the case. , The result is the same for each place of origin. The slowest rust we have tried is the only one, which is half a year, but I can tell you that this is a probability problem, and it may also be related to the weather. The customers in Henan have relatively dry air. "This rust problem is just a matter of time. It grows from the bottom in 7 to 8 days." Is there a problem with the frosting link in the process? Some merchants think: "The frosting link destroyed the protective layer. It is easy to rust. As for the rusting problem of electroplating, you can imagine that the iron brush is not rusted after the paint is isolated from the air, not to mention stainless steel!" "No, if it is an oxide layer problem, why does it not polish? ?" Some merchants retorted. In the cleaning process of the process, the key question is that it should be caused by the unclean cleaning process. The remaining pickling substances will damage the layer of chromium oxide on the surface of the stainless steel, which should be the problem of the process manufacturer. The premise of normal rose gold or titanium plating must be pickled first. Alcohol or nitric acid is needed to wash away the impurities on the surface. If the impurities are not cleaned, it will easily lead to discoloration. If the acid is not cleaned, it will take a long time. The inside will corrode and the rust will come out. At first, we also thought it was a cleaning problem. You also know that the matte finished board has cracks and may contain impurities, so the cleaning process is very important. However, we tried various methods, for example, there was indeed acid in the cleaning agent at the beginning, and the result should be rust or rust: Then, I tried washing with tap water, and it was still the same: So, I also tried red powder, Filtered water, even exaggeratedly bought mineral water to test, the result is still the same. Therefore, we feel that it should not be a matter of cleaning.