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Why is UV laser marking machine more expensive than fiber laser marking machine?

by:Leadtech Coding     2022-02-07

Laser marking machines are widely used in various industries due to their beautiful printing effect and clear fonts, which are not easy to be erased. However, many users have found that the price difference between fiber laser marking machines and UV laser marking machines is huge. And the scope of work usage varies widely.

Although they are all laser marking machines, the laser generators of fiber laser marking machines and ultraviolet laser marking machines are different, and the price difference of their configurations is also very large. Fiber laser marking machines generally use 20-watt, 30-watt, 50-watt and higher laser generators; while UV laser marking machines generally use 3-watt, 5-watt and 10-watt laser generators, so fiber lasers The fundamental reason for the price difference between the marking machine and the UV laser marking machine lies in the configuration and working principle of the laser generator. This year, laser marking machines have become more and more widely used. In addition, laser machines do not use consumables and are basically a one-time investment, and there is very little maintenance during use, which reduces the cost of replacement parts. With the wind of environmental protection Since then, more and more attention has been paid to environmental protection issues, which is also the reason why more manufacturers have begun to choose lasers. Under this trend, Chengdu Linshi Industrial Printing Technology Co., Ltd. has also transformed from a seller of laser cij printers to a manufacturer, providing customers with high-quality laser inkjet marking services. Today, I will analyze why the UV laser marking machine is more expensive than other laser printers?

In the laser machine industry, it is divided according to low, medium and high. Commonly used models can be represented by these three types of laser marking machines. The low-end is semiconductor laser engraving. The middle-end is also the most popular fiber laser marking machine, and the relatively high-end is the ultraviolet laser marking machine. The reason why this model is called high-end is that it has a wide range of applications, and the marking effect cannot be achieved by other models. Generally, the products that are marked with it are also relatively high-end, such as: Apple mobile phone, IPAD Wait. Another reason is the word 'expensive'. Indeed, but as a high-end device, the laser accessories it uses, the laser, are much higher than other models. The laser in a UV laser marker has a benefit that other lasers do not have, namely the ability to limit thermal stress. This is because most UV laser systems operate in a low power state. Using a process sometimes referred to as 'cold ablation,' the beam of an ultraviolet laser creates a reduced heat-affected zone, which is used in the manufacture of circuit boards.

The beam of the UV laser of the UV laser marking machine produces a reduced heat-affected zone, which minimizes the effects of edge punching, carbonization, and other thermal stresses. These negative effects are usually present with higher power lasers. In addition, in terms of wavelength, the wavelength of ultraviolet laser is shorter than that of visible light, so it is invisible to the naked eye and has less impact on the human body during use. While you can't see these laser beams, it's these short wavelengths that allow UV lasers to be focused more precisely, producing extremely fine circuit characteristics while maintaining excellent positioning accuracy.

There is another important factor. In addition to the low temperature of the workpiece, the high-energy photons present in the ultraviolet light allow the ultraviolet laser to be applied to large-scale PCB circuit board assemblies, from standard materials such as FR4 to Various materials such as high frequency ceramic composites and flexible PCB materials including polyimide are suitable. Absorptivity of three common PCB materials under the action of six different lasers. The six lasers include an excimer laser (248 nm wavelength), an infrared laser (1064 nm wavelength), and two CO2 lasers (9.4 μm and 10.6 μm wavelengths, respectively). Ultraviolet laser (Nd:YAG, wavelength 355nm) is a rare laser with uniform absorption among the three materials.

UV laser marking machine shows very high absorption rate when applied to resin and copper, and also has appropriate absorption rate when processing glass. Only expensive excimer lasers (wavelength 248nm) get better overall absorption when processing these primary materials. This material difference makes UV lasers the best choice for a variety of PCB material applications in many industrial fields, from the production of the most basic circuit boards, circuit wiring, to advanced processes such as the production of pocket-sized embedded chips. Therefore, the price is also much higher than that of fiber laser marking machines.

(This article is edited by the editor, please be sure to indicate the source:)


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