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The development of cold light source ultraviolet laser in the marking machine industry

Aug 08 , 2022

The development of cold light source ultraviolet laser in the marking machine industry

At present, the laser marking machines on the market mainly include CO2 laser marking machines, fiber laser marking machines and ultraviolet laser marking machines, etc. At present, laser marking machines are mainly used in some occasions that require finer and higher precision. When it comes to laser marking machines, the concept of people outside the industry is vague, and they don't know which one to use? Due to the different principles of laser marking machines, there are many models of series to mark products with different materials. Ultraviolet laser marking machine is an important role in it.

 

Laser industry

 

Working principle of UV laser marking machine:

 

The UV laser marking machine is developed with a 355nm UV laser. Compared with the infrared laser, the machine adopts the third-order intracavity frequency doubling technology. Compared with the infrared laser, the 355 UV light has a small focusing spot, which can greatly reduce the mechanical deformation of the material and the processing heat. It has little impact and is mainly used for ultra-fine large watch and engraving. It is especially suitable for applications such as food and pharmaceutical packaging material marking, micro-hole drilling, high-speed division of glass materials and complex pattern cutting of silicon wafers.

 

Ultraviolet laser marking machine integrates international advanced technology. High-energy ultraviolet photons directly destroy molecular bonds on the surface of many non-metallic materials, so that molecules are separated from objects. This method does not generate high heat. There is almost no thermal effect, so it is called cold processing, and the probability of material impact is reduced to 1%, so that the advantages of its processing have been fully applied, and it is also a great improvement in laser technology. Bidding opportunities are becoming more and more common.

 

 

UV laser marking machine

 

Ultraviolet laser marking machine has good beam quality and extremely small focusing spot, which can realize ultra-fine marking. Ultraviolet lasers have shorter wavelengths than visible light (invisible to the naked eye), enable more precise focusing, and maintain excellent positioning accuracy while producing extremely fine circuit characteristics. If the workpiece temperature is low, the presence of high-energy photons in the ultraviolet light allows the ultraviolet laser to be applied to large PCB circuit board assemblies, from standard materials such as FR4 to high-frequency ceramic composite materials and flexible PCB materials including polyimide. Materials are applicable.

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