Optical fiber laser marking machine and ultraviolet laser marking machine. Both machines can carve many materials, including plastic, leather, metal and other materials. But what is the main difference? Why is one more expensive than the other? Here, we will explain the difference between the two technologies and their main purposes. because

1. Laser generator

Ultraviolet laser marking machine:

Equipped with 355nm ultraviolet laser.

Compared with the infrared laser (fiber laser, Co2 laser), this machine adopts the third order cavity frequency doubling technology. The 355 UV spot is very small, which can greatly reduce the mechanical deformation of materials and small processing thermal effects.

Optical fiber laser marking machine:

The wavelength is 1064 nm.

With regard to the wavelength of the laser, the shorter the wavelength, the smaller the laser spot and the higher the accuracy, and the smaller the heat affected zone formed during the processing, the more exquisite the processing effect.

What is the difference between UV laser marking machine and optical fiber laser marking machine?

2. Basic working principle of laser processing materials:

Infrared laser (CO2 laser and fiber laser marking machine)

The material on the surface of the material is heated and evaporated by the laser, which removes the material. This method is usually called "heat treatment".

UV laser marking machine

The high-energy ultraviolet photons directly destroy the molecules on the material surface, so that the molecules are removed, and the process will not generate high heat, which is called "cold processing"

3. Machine structure

From the appearance, the main structures of these two machines look similar, but the technologies used inside these machines are different.

Fiber laser and ultraviolet laser use different power supply,

Another difference is that the ultraviolet laser needs to be cooled by a chiller, while the fiber laser can only be cooled by air.

4. Application

These two machines are designed for different material engraving solutions

The optical fiber laser marking machine is mainly used for engraving and provides solutions for the metal marking industry. The machine can mark all metal materials,

UV lasers are designed as a practical solution for marking plastics and glass. UV laser machine can carve a variety of materials from metal to paper.