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What is the working principle of carbon dioxide laser marking machine laser marking machine

by:Leadtech Coding     2022-02-28

There are two principles of laser marking machine:

'thermal processing' laser beam with high energy density (it is a concentrated energy flow), irradiated on the surface of the material to be processed, the surface of the material Absorbing laser energy, a thermal excitation process occurs in the irradiation area, so that the temperature of the material surface (or coating) rises, resulting in metamorphosis, melting, ablation, evaporation and other phenomena.

'Cold working' photons with very high loading energy (ultraviolet), which can break chemical bonds in materials (especially organic materials) or in the surrounding medium, to the extent that the material is destroyed by athermal processes. This cold working is of special significance in laser marking processing, because it is not thermal ablation, but cold peeling that breaks chemical bonds without the side effect of 'thermal damageProduce heating or thermal deformation and other effects. For example, excimer lasers are used in the electronics industry to deposit thin films of chemicals on substrate materials and to create narrow trenches in semiconductor substrates.

Comparison of different marking methods

Compared with inkjet marking, the advantages of laser marking and engraving lie in: a wide range of applications, a variety of materials (metal, glass, ceramics, plastic, leather, etc.) can be permanently marked with high quality. There is no force on the surface of the workpiece, no mechanical deformation, and no corrosion on the surface of the material.


Can engrave a variety of non-metallic materials. Used in clothing accessories, pharmaceutical packaging, wine packaging, architectural ceramics, beverage packaging, fabric cutting, rubber products, shell nameplates, craft gifts, electronic components, leather and other industries.

●It can engrave metal and various non-metal materials. It is more suitable for the processing of some products that require fine and high precision.

Apply to electronic components, integrated circuits (IC), electrical appliances, mobile communications, hardware products, tool accessories, precision instruments, glasses and clocks, jewelry, auto parts, plastic buttons, building materials, PVC Pipe, medical equipment and other industries.

Applicable materials include: common metals and alloys (all metals such as iron, copper, aluminum, magnesium, zinc, etc.), rare metals and alloys (gold, silver, titanium), metal oxides (various metals oxide), special surface treatment (phosphating, aluminum anodizing, electroplating surface), ABS material (electrical appliance shell, daily necessities), ink (translucent keys, printed products), epoxy resin (electronic components packaging, Insulation layer)

Common types: At present, the most common laser marking machines on the market are mainly CO2 laser marking machines and YAG laser marking machines. Later, YAG laser marking machines were gradually marked by semiconductor lasers. It has become a model with the largest market share of laser marking machines, and there are also high-end end-pumped laser marking machines, fiber laser marking machines, and ultraviolet laser marking machines.

With the development of science and technology, the fiber laser marking machine in the electronics industry is more and more accepted by more and more people. Its characteristics are very obvious: integrated design, small size, low power consumption, long life, high Efficient, maintenance-free, with high-quality laser beam, fine spot, no consumables.

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