The difference between uv laser engraving and fiber laser marking

With the development of laser marking technology in the past few decades, intelligent manufacturing equipment has become more and more popular, and uv laser engraving machines have successfully been widely used in the manufacturing field.

The common ultraviolet laser engraving machine on the market or called ultraviolet laser laser engraving machine and UV ultraviolet laser marking machine belong to a kind of ultraviolet laser marking machine series, so the principle is similar to the ultraviolet laser marking machine. The beam permanently marks the surface of a variety of materials. The effect of marking is to expose the deep material through the evaporation of the surface material, or to "engrave" traces through the chemical and physical changes of the surface material caused by light energy, or to burn off part of the material through light energy, showing the required etching. pattern, text.

Ultraviolet laser marking machine is a cold working method. Its processing accuracy is high in visible light and infrared band lasers, and under the same conditions, the shorter the wavelength, the smaller the focused spot (the longer the wavelength is). short, the energy of the single photon will be greater). Visible light and infrared band lasers rely on thermal effects to mark on evaporated materials, but ultraviolet light can directly break a chemical bond of the material, and the molecules are separated from the object. The heat-affected area of ​​processing is relatively small, and very fine and special materials can be marked. mark. Because this way of marking has little thermal influence, indexing is also known as laser cold work marking.

Ultraviolet laser marking machine shows extremely 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.

What is the difference between uv laser engraving machine and other laser marking machines

laser

The uv laser engraving 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 focusing spot is extremely small, which can greatly reduce the mechanical deformation of the material and the processing. Thermal impact is small.

The fiber laser marking machine uses a 1064nm wavelength laser.

PS: Regarding the laser wavelength, generally the shorter the wavelength, the smaller the laser spot, the higher the precision, the smaller the heat-affected zone formed during processing, and the more exquisite the processing effect.

Processing methods

Ultraviolet laser marking machine is a chemical processing method, and the laser is used to penetrate into the interior of the product material for processing.

For CO2 laser marking machine and fiber laser marking machine, they are all used for physical marking method of laser, and the processing method of laser physics is mainly to process the surface of products and materials.

What are the advantages of uv laser engraving machine over fiber laser marking machine?

Fiber laser marking machine: cost-effective, basically suitable for laser marking on various metal surfaces. Due to the heat generated by its beam, it is not suitable for high-precision marking of special materials.

Ultraviolet laser marking machine: especially suitable for the high-end market of ultra-fine processing, marking the surface of packaging bottles of cosmetics, medicines, videos and other polymer materials, the effect is fine, the marking is firm and clean, better than ink coding and no pollution; flexible PCB board marking and dicing; silicon wafer micro-hole and blind-hole processing. Among them, 80% of the data lines and adapters on the market are marked by ultraviolet lasers, which is very practical. The price of uv laser engraving machine is also more expensive.

Conclusion:

At present, after the successful research of the uv laser engraving machine, it has played a supporting role in the fields of energy and materials. It also has a great direct role in the country's total production and economic value, and has solved many important scientific problems. The topic plays a decisive role in the future development. Shenzhen Bote Laser's uv laser engraving machine has very high performance and stability, and is used by many international manufacturers. If you have any questions about uv laser engraving, you can always @Bote.