What are the advantages of UV laser marking machine over fiber laser marking machine?

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

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 the same Ultraviolet laser marking machines are similar in that they use laser beams to permanently mark the surface of various 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 kind of cold working method, its processing accuracy is high in visible light and infrared band laser, and the wavelength is under the same conditions The shorter it is, the smaller the focused spot will be (the shorter the wavelength, the higher the energy of a single photon). 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 u200bu200bprocessing is relatively small, and very fine and special materials can be marked. mark. Because this way of marking has little thermal effect, 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 the expensive excimer laser (wavelength 248nm) will get better overall absorption when processing these main 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 the UV laser marking machine and other laser marking machines

Laser

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, and the focusing spot of 355 ultraviolet light is extremely small, which can greatly reduce the mechanical deformation of the material and the processing heat effect 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, and the greater the heat-affected zone formed during processing. The smaller it is, the more exquisite the processing effect will be.

Processing method

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

CO2 laser marking machine and fiber laser marking machine are both used for physical marking method by laser, and the physical processing method of laser is mainly processed on the surface of products and materials.

What are the advantages of UV laser marking 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: It is 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, with fine effect. The marking and cleaning are firm, which is better than ink Leadtech Coding and pollution-free; 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 UV laser marking, which is very practical. The price of UV laser marking machine is also more expensive.

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