Some understanding of the vacuum industry colleagues know that vacuum multi-arc ion coating machine plating different colors, with different processes and different harrows, such as common gun color, we generally choose to use titanium harrows or chromium harrows, titanium harrows to make the color old, chromium harrows to make the color young, black we generally use titanium harrows or chromium harrows.

If the film layer out of the phenomenon of fading, what is the reason? Many customers have asked me before, why the workpiece plating has black spots, most of the reason is that the early cleaning is not thorough, if it is the phenomenon of color loss, the first analysis process is correct, the second analysis of pre-treatment cleaning is thorough, the pure water value is up to the standard requirements, the third analysis of the vacuum furnace is leaky. There are probably only three reasons. If the color is discolored, the first analysis is whether the product of the hanger is within the effective sputtering range, and the second analysis is whether the process should be adjusted.
Deplating This piece is also based on different processes, the size of the bias, and the color of the different rake materials plated to analyze how to correctly deplating, and the color of the titanium rake plated, such as gold: hydrogen peroxide plus caustic soda and so on.
Vacuum multi-arc ion coating machine in stainless steel plating TIC multi-arc cathode according to the different target, can work stably current is not the same, for example: if it is a Cr target, you can work stably at about 60A, Ti target can work stably at about 70A, Zr stable arc current is slightly higher, about 100A. The operating voltage of the cathode is between 20V-30V. When coating, for example, you want to do TIC black film, you must choose Ti target, TI working current at 70A, working voltage at about 25V, need to fill C2H2 gas into the vacuum chamber, the vacuum degree of coating should be maintained at about 0.5Pa, under normal circumstances, is to use a molecular pump or diffusion pump to extract these gases, so that the vacuum chamber to maintain a certain pressure, At this time, the slide valve pump and Roots pump act as the pre-pump of the molecular pump or diffusion pump, and are always on.