Abstract: Fiber laser marking machine and UV laser marking machine are two types of laser marking machines, and they are also the most commonly used laser marking machines on the market. Then fiber laser marking machine and UV What is the difference between laser marking machines? Let’s find out below.
The main difference between fiber laser marking machine and UV laser marking machine lies in their application fields, core components and processing principles.
1. The core component laser is different
Ultraviolet laser marking machine: developed with 355nm ultraviolet laser, this machine adopts third-order intracavity frequency doubling technology compared with infrared laser, 355 ultraviolet light focusing spot is extremely small, which can greatly reduce the mechanical deformation of materials and The heat effect of processing is small.
Fiber laser marking machine: 1064nm wavelength is used.
Regarding the laser wavelength, generally the shorter the wavelength, the smaller the focused spot of the laser, the higher the precision, the smaller the heat-affected zone formed during processing, and the more exquisite the processing effect.
2. Different processing methods
Ultraviolet laser marking machine: The ultraviolet laser processing process is called “photoetching” effect, “cold processing” (ultraviolet) photons with high load energy can break chemical bonds in materials (especially organic materials) or surrounding media, to The material is destroyed by non-thermal process. It does not produce heating or thermal deformation on the inner layer and nearby areas of the processed surface, and is very suitable for fine processing.
Optical fiber laser marking machine: it uses the laser beam to evaporate the surface material to expose the deep material, or to “carve” traces through the chemical and physical changes of the surface material through light energy, or to burn part of the material through light energy, showing all Patterns, characters, barcodes and other graphics to be etched are suitable for processing metal products.
3. Different fields of application
Fiber laser marking machine: high cost performance, basically suitable for laser marking on various metal surfaces. Due to the heat generated by its beam, it is not suitable for high-precision special material marking.
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, and the marks are clean and firm, which is better than inkjet coding and pollution-free. Marking and scribing of flexible pcb boards. Silicon wafer micro-hole, blind hole processing. Among them, 80% of the data cables and adapters on the market are marked by UV laser marking.