Fiber laser marking machine VS UV laser marking machine, which is better?

Fiber laser marking machine VS UV laser marking machine, which is better?

Fiber laser marking machine VS UV laser marking machine, which is better?
The laser marking machine models widely used in the market include fiber laser marking machine and ultraviolet laser marking machine. Which of the two is better? In fact, both have their own advantages and disadvantages, but the differences are also very large, such as working principles, processing methods, and cost of use.

First, let's take a look at the difference between
fiber laser marking machine and UV laser marking machine
1. Different lasers
The fiber laser marking machine uses rare earth doped glass fiber as the gain medium laser, and the laser wavelength is 1064nm. The UV laser marking machine uses a UV laser with a wavelength of 355nm.
2. The working principle is different
Fiber laser marking machines use a laser beam to make permanent marks on the surface of various materials. The function of marking is to expose the deep material through the evaporation of the surface material, or to "engrave" traces through the physical changes of the surface material caused by light energy, or to burn part of the material through light energy to display the pattern, text, and barcode to be etched. and other types of graphics.
Ultraviolet laser marking machine is a series of laser marking machines, so the principle is similar to that of laser marking machine, which uses laser beams to make permanent marks on the surface of various materials. The function of marking is to directly break the molecular chain of the substance through the short-wave laser (different from the evaporation of the surface substance produced by the long-wave laser to expose the deep substance), revealing the pattern and text to be processed. etching.
3. Different processing methods
Fiber laser marking machine uses laser for physical marking method. The laser physical processing method mainly processes the surface of products and materials, which belongs to thermal processing. UV laser marking machines use cold working, a chemical processing method, while laser chemical processing methods use lasers to penetrate deep into the product material for processing.
4. Different application fields
Fiber laser marking machine is basically suitable for laser marking of various metal surfaces. Due to the heat generated by its beam, it is not suitable for high-precision marking of special materials. like:
Widely used in integrated circuit chips, computer accessories, industrial bearings, watches,
electronic communication products, aerospace devices, various auto parts, home appliances, hardware tools, molds, wires and cables, food packaging, jewelry, tobacco, military, etc. Graphic marking, batch production line operations.

Ultraviolet laser marking machine: especially suitable for the high-end market of fine processing. like:
A. Cosmetics, medicines, accessories and other polymer materials packaging bottles have good surface marking effect and strong cleaning power, which is better than inkjet coding, and has no pollution;
B. Marking and scribing of flexible pcb boards; processing of silicon wafer micro-holes and blind holes;
C. LCD liquid crystal glass two-dimensional code marking, glassware surface drilling, metal surface coating marking, plastic buttons, electronic components, gifts, communication equipment, building materials, etc.

So, what are the advantages of
fiber laser marking machine and UV laser marking machine?
1. Advantages of fiber laser marking machine:
A. Good beam quality
The laser beam is thin, the processing material consumption is small, and the processing heat affected zone is small. The markings on the markings are permanent and will not fade due to environmental influences. The marked graphics are exquisite and beautiful.
B. Long service life
Fiber laser technology can greatly extend the life of the device (compared to DPSSL), up to 100,000 hours.
Fiber lasers have other advantages: because the laser medium of fiber lasers is a waveguide medium, so the efficiency is high; fiber lasers are easy to connect with fiber transmission systems and have high efficiency; the fiber core can be made very thin, which can achieve high power density; fiber heat dissipation The performance is good, so the fiber laser has high conversion efficiency and extremely low threshold; the output wavelength range of the fiber laser is very wide, from 400 to 3400nm, which can meet the needs of various applications. It has good application prospects in military, medical and other fields.
C. Energy saving and environmental protection
The electro-optical efficiency of the fiber laser marking machine is as high as 28%, which greatly saves the power consumption during work and saves the operating cost. The fiber laser marking machine is pollution-free and noise-free.
D. Low maintenance cost
Because the fiber laser has no optical lens in the resonant cavity, it has the advantages of adjustment-free, maintenance-free, and high stability, which is unmatched by traditional lasers.

Video of fiber laser marking machine

2. The advantages of UV laser marking machine:
A. Super fine marking and special material marking are possible
Due to the extremely small focal point and the small processing heat-affected zone, the UV laser can perform ultra-fine marking and marking of special materials. It is the first choice for customers who have higher requirements for marking effect.
B, cold working method is better
UV laser processing becomes cold processing because the high-energy molecules of UV photons directly separate the molecules on the metallic or non-metallic material to be processed. However, this separation can lead to separation of the molecules from the material. This way of working does not generate heat.
On the basis of cold working, the effect of processing product materials will be better and better developed. Because when using cold laser processing, the probability of material influence is reduced to one percent, thereby reducing the processing advantages. Get all apps.
C, the impact area is small
The heat-affected surface of the UV laser marking machine is very small, it will not produce thermal effect, and will not cause the problem of material scorching.
D. low power
Ultraviolet lasers are mainly low-power, stable in performance, small in size and low in power consumption.

Video of UV laser marking machine