It won’t fade, run or become less discernable as time passes like traditional marking including ink jet, hand engraving, dot-peen marking.Ĥ. Permanent marking: Laser marking is a permanent marking. Almost no maintenance during this period.ģ. Fiber laser model has a over 100,000 hours service life. The laser engraver adopts a scanning system for high-speed magnetic induction motor control with laser routes to the advantages of high accuracy and speed.Ģ. By controlling the laser energy density, the desired color can be produced on metal materials such as stainless steel, chromium, and titanium.Ĭolor Laser Engraver Features & Advantagesġ. As the laser energy increases, the color of the metal surface shows regular changes: yellow, red, blue, green until green gradually darkens. Through the laser thermal effect, it is obtained that the laser energy density is proportional to the film thickness. Under the action of the laser, the metal surface produces a laser thermal effect. The following table shows the colors of several main oxides after the metal surface is oxidized by laser. The color appears on the surface the third is that there is a mixed state of colored oxide and oxide film at the same time.Ĭolor rendering principle of laser marking: under the action of the laser heat source, the metal generates colored oxide on the surface, or a colorless and transparent oxide film is formed, which presents various colors due to the interference effect of the light film. The oxide film produces interference effects. There are three color rendering methods on metal surface: one is to generate colored oxides the other is to generate a very thin colorless and transparent oxide film on the surface of stainless steel under the action of chemistry, electrochemistry or laser. The principle of color laser marking machine is: using an advanced MOPA laser generator, the high temperature generated by laser focusing makes the surface material of the material evaporate to expose the deep material, or the chemical and physical changes of the surface material caused by light energy to display the marking information. The influence of these parameters will make the characteristics of the color change not obvious, but they are interrelated and affect each other. In the actual marking operation, the pulse width, frequency, power, speed, filling method, filling interval, delay parameters and other factors will affect the color effect. The characteristics of MOPA structure bring unlimited possibilities for color marking. Adjusting one of them will not affect other laser parameters, which is not available in Q-switch lasers. The advantage of MOPA laser is that its pulse width and frequency are independently adjustable. How Does Color Laser Engraving Machine Work? MOPA laser marking machine has certain advantages in the marking of special materials, such as laser blackening of digital product parts, mobile phone keys, transparent keys, mobile phone shells, key panels, electronic components, oxidation, plastic marking, oxidation treatment and coating surface marking such as electroplating and spraying, and color patterns on stainless steel materials can also be marked. The full name of MOPA is Main Oscillation Power Amplification, which is to couple the seed signal light and pump light with high beam quality into the double-clad fiber for amplification in a certain way, so as to realize the high power amplification of the seed light source. By controlling the laser energy and parameters, the oxide layers of different thicknesses can present different colors to achieve the purpose of color engraving. MOPA laser marking system uses a high-energy density laser heat source to act on the metal surface to generate colored oxide on the surface, or generate a colorless and transparent oxide film, which presents a colorful effect due to the light interference effect of the film. Color Laser Engraving Machine with Rotary AttachmentĬolor laser engraving machine is a type of automatic CNC laser marking system that uses MOPA fiber laser generator to mark colors on stainless steel, titanium, and chromium.
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