Colleagues who have some knowledge of the vacuum industry know that the vacuum multi-arc ion coating machine coats different colors, uses different processes and different rake materials, such as common gun colors, we generally choose to use titanium rake or chrome rake, titanium rake to make it The color is old, and the color made by chrome rake is tender. For black, we generally use titanium column rake or chrome column rake.

       If the film layer comes out and fades, what is the reason? Many customers have come to ask me why the workpiece is plated with black spots. Most of the reasons are that the cleaning in the early stage is not thorough. If it is a phenomenon of fading, the first analysis process is correct, and the second analysis is whether the pretreatment cleaning is thorough, pure water Whether the value meets the standard requirements, the third analyzes the vacuum furnace for leaks. There are probably three reasons. If the color changes, first analyze whether the product of the hanger is within the effective sputtering range, and the second analyze whether the process should be adjusted.
      This piece of stripping is also based on different processes, the size of the bias voltage, and the color of different rake materials to analyze how to correctly strip, the color plated with titanium rake, such as gold: hydrogen peroxide plus flake alkali, etc. .
      Vacuum multi-arc ion coating machine coats TIC multi-arc cathode on stainless steel according to the target material, the current that can work stably is different, for example: if it is a Cr target, it can work stably at about 60A, and a Ti target can work stably at 70A The left and right can work stably, the stable arc current of Zr is slightly higher, about 100A, and the working voltage of the cathode is between 20V-30V. When coating, for example, if you want to make a TIC black film, you must use a Ti target. The working current of TI is 70A and the working voltage is about 25V. C2H2 gas needs to be filled into the vacuum chamber, and the vacuum degree during coating should be maintained at about 0.5Pa. , Under normal circumstances, the molecular pump or diffusion pump is used to extract these gases, so that the vacuum chamber maintains a certain pressure. At this time, the spool valve pump and the Roots pump act as the backing pump of the molecular pump or diffusion pump. on.