Can laser marking be colored? In recent years, with the rapid development of laser technology, the application level of laser technology has gradually improved. Color laser marking is a new laser marking technology. Mainly used in stainless steel, chromium, titanium and other metal materials to carve color patterns.
It is found that the key to color the metal surface is to strictly control the laser pulse energy and pulse width. High frequency and low pulse energy lasers are more suitable for this application. Due to adjustable pulse parameters and good beam quality, fiber lasers are the most appropriate choice. By strictly controlling the heat injection, the fiber laser can make color marks on the metal surface.
The color laser marking machine is different from the ink deposition technology and those technologies that use color powder or film. The typical physical effect that more advanced lasers can change the color of plastics is related to the thermal decomposition reaction of polymers in the oxygen environment. In contrast, the surface of metal raw materials can produce various colors. The color engraving of stainless steel watch mainly changes according to the following color sequence: orange red purple blue green green green yellow green clear red.
