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Can laser marking machine print color?

by:Leadtech Coding     2022-03-07

With the development of laser technology, the application of laser marking technology is becoming more and more extensive. And the patterns that we generally see by laser marking machines are the color of the material itself, or black and white. Color it? Is there any laser marking machine that can make color?

The application level of laser technology is gradually improved, and color laser marking is a new type of laser marking process. It mainly acts on stainless steel metal materials. By setting the process parameters of the laser marking machine, various exquisite color patterns can be engraved on the objects of stainless steel materials. That is, MOPA color laser marking machine. Using the latest digital technology to create a new concept of laser marking, the first domestic laser marking machine that can print a color pattern at one time makes laser marking bid farewell to the monochrome era, and laser marking is no longer monotonous!

MOPA color laser marking machine is different from ink deposition technology and those by applying colored powder or film, more advanced laser can make plastic color change the typical physical effect of the same. The thermal decomposition reaction of the polymer occurs in an oxygen environment. In contrast, various colors can be produced on the surface of stainless steel metal raw materials.

Different from the ordinary laser marking machine, the color laser marking machine adopts the latest optical technology to design the optical system and the unique water temperature control system, the laser power is stronger, and the beam is more stable. The biggest disadvantage of the color laser marking machine is that the price is too high. The price is several times higher than that of ordinary laser marking machines, which makes its market share quite small.

Laser stainless steel color laser marking machine can mainly carry out color marking on stainless steel material, the marking is clear, beautiful and permanent, and the reliability is high.

The principle of color development of colored stainless steel, there are three color development methods: one is to generate colored oxides; A thin layer of colorless and transparent oxide film is formed on the surface of stainless steel, and the oxide film produces an interference effect, which can show color on the surface; the third is a mixed state of colored oxide and oxide film at the same time.

The interaction between laser and material, including the absorption of laser by metal material and the heating process of laser to material. Through the laser color marking experiment, the surface microstructure of the stainless steel color laser marking sample was observed, and the changes in the marking process were analyzed.

The laser thermal effect on stainless steel surface under the action of laser was studied. Through the calculation of the laser thermal effect equation, it is concluded that the laser energy density is proportional to the film thickness. Experiments have shown that with the increase of laser energy, the color of the stainless steel surface changes in the following color sequence: orange-red-purple-blue-green-blue-blue-green-green-yellow-green-yellow-orange-red….

It is of guiding significance for laser equipment manufacturers to design special stainless steel color laser marking machines. At present, the commonly used marking parameters of laser marking machine are: current, pulse repetition frequency, pulse width, dot spacing, line spacing and marking speed, etc. There is no direct correspondence between the laser-generated stainless steel color, and the marking can be The parameters are changed to parameters that have a direct impact on the color change of the stainless steel surface, such as: laser energy, pulse repetition frequency, pulse width, etc., reduce the variable parameters, improve the simplicity and reliability of adjusting the generated color, and allow the stainless steel laser color marking to enter Batch industrial production becomes possible.

Laser color laser marking technology on stainless steel surface is gradually becoming mature. For related information, please pay attention to the company's official website: www.


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