comparison of different kinds of laser marking machine

The most common laser marking machines include:fiber laser marking machine,

CO2 laser marking machine, semiconductor laser marking machine, YAG laser marking machine.

Firstly, two principles of laser marking machine:

1>Hot Processing

A laser beam with a higher energy density (a concentrated energy flow) illuminates on the surface of material.

Then the surface of material absorbs laser energy and generates a thermal excitation process in irradiating area,

so causing the temperature of surface (or coating) of material to rise,

causing metamorphosis, melting, ablation, and evaporation.

2>Cold Working

(Ultraviolet) photons with very high load energy can break the chemical bonds in material

(especially organic materials)or surrounding medium,

so it can cause material to undergo non-thermal process damage.

Therefore this cold working has special significance in laser marking processing,

because it is not thermal ablation, but cold peeling.

Since this cold peeling can breaks chemical bond without causing side effects of thermal damage.

Therefore, there is no effect of heating or thermal deformation on inner layer and vicinity of the material.

Secondly,laser marking machine common classification:

If According to different laser source, laser marking machines can be divide into:

CO2 laser marking machine, semiconductor laser marking machine,

YAG laser marking machine, and fiber laser marking machine.

Then if according to the different visibility of lasers,

laser marking machine include:UV laser marking machine (invisible),

green laser marking machine (visible laser), infrared laser marking machine (invisible laser).

Thirdly,the different wavelength of laser marking machine:

1. ultraviolet laser marking machine: 266 nm

2. green laser marking machine: 532nm

3.lamp pump YAG laser marking machine: 1064nm

4. semiconductor side pump YAG laser marking machine,

semiconductor end pump YAG laser marking machine: 1064nm

5.fiber laser marking machine: 1064nm

6. CO2 laser marking machine: 10.64um

Finally Contact us:

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