What chemical composition does the black titanium gold disk use to remove black titanium?

In recent years, there are more and more signs, signs, glass door frames, bathroom baffles and elevator guardrails made of black titanium plates.

"Black titanium" is called "black gold" in Guangdong, and some are called "black skin". Yiwu is called "black titanium electroplating".

The computer is marked "black titanium plating" and there are many web pages!

With the increase of users and the extension of time, people are not satisfied with using only the original black, and always want to change it, but screen printing any color pictures and texts on the black background is not obvious or harmonious. Because silk-screen printing ink has certain light transmittance and adheres to dark pages, all colors have a layer of gray, which is an important factor that silk-screen printing technology is difficult to implement on black titanium plates. The second factor is that screen printing ink is an extra layer of paint after all, which has some false and unreal feelings. After a long time, the ink will fade and fall off. As a result, a new process appeared: black titanium faded.

Black is selectively removed, revealing the bright white of bright tiles. The black and white colors are in sharp contrast, and this white color is actually the primary color of mirror stainless steel, giving people a simple, true, elegant and beautiful feeling.

But, you know, it is not so easy to get rid of the black color of this water-plated black titanium! Try it if you don't believe me. It can be said that all kinds of titanium removal solutions can't remove this layer of black, and it is also ineffective to use strong acid (including aqua regia) or ferric chloride and other metal corrosives.

First, it is difficult to remove stubborn black. Second, even if black is removed, it has no practical use value, because the foundation is gray and uneven, and mirrors cannot be obtained.

The reason is that people call it water-plating black titanium, but it is not titanium plating. This layer of black is absolutely free of titanium. This kind of black is a color of the surface, which should be called "stainless steel is black".

In the teaching operation of stainless steel blackening, we will clearly know that the reason why this layer of black is stubborn and not easy to fade is because it needs to go through two processes of "fixing film" and "sealing treatment" after coloring to ensure that this layer of black film is firm, wear-resistant, corrosion-resistant, sun-resistant and weather-resistant. However, when we deliberately want to remove this layer of black, it becomes difficult.

According to my experiment, after coloring, before sealing and fixing the film, the black color can be removed by chemical solution, but all the black titanium plates we bought in the market have been sealed and fixed.

20 10 I experimented with the matching formula and technology. At room temperature, the black and shiny stainless steel mirror can be removed (controllable) within 3 seconds to 4 minutes, and the graphic protection ink will not be damaged.

In recent years, it has been used in many places, and the process is stable, reliable and economical. This potion has a long shelf life. As for how long, it is still unknown, because the medicine I prepared three years ago has not failed so far, and it may have the effect of self-repair. Its mechanism remains to be studied.

In addition, if you encounter other titanium gold layers and various metal surface colors (including black, rose and gold) that cannot be removed. . . ), please send me some samples, and I will find out the formula for your free experiment. But you can pay the round-trip postage.

Figure 1: Black titanium plate in Guangdong market;

Figure 2: Black titanium pet brand from a manufacturer in Yiwu;

Figure 3: Blackening process of black titanium plate in Henan market: (picture to be sent)

? Supplementary note: The above answer is specifically aimed at the so-called black titanium, which is the most commonly used stainless steel. There is also a real black titanium plate on the market. The blackening process of this kind of board is different from that of colored board. Since it is titanium gold, it is better to use titanium removal solution. However, a kind of black titanium plate I met in Jinan was not smooth when blackened with general titanium removal solution. It is estimated that it may be processed by a small factory, and the titanium layer is thick and uneven, and the time for titanium removal in a few seconds cannot be completed, resulting in the destruction of ink. Label manufacturers are advised not to choose this black titanium plate.

Addressed in 20 13.6438+02.6438+09.