Laser cutting machine uses green laser/infrared laser/ultraviolet laser application differences

Laser cutting machine is an important tool in the cutting field and is known as the fastest "knife". Its principle is to irradiate the surface of the material with a high-density and high-energy laser beam to melt, vaporize, ablate or reach the ignition point. At the same time, the molten material is blown away by the high-speed airflow coaxial with the beam, thereby cutting the workpiece and forming a cutting.

There are many kinds of lasers on the market, which are divided into various light sources, such as green light, infrared, ultraviolet, etc. Each light source has different advantages and can be applied to various materials. Laser cutting can be divided into four categories: laser vapor cutting, laser melting cutting, laser oxygen cutting and laser scribing and controlled fracture.

So, what are the differences between green laser/infrared laser /ultraviolet laser applications of various light sources in laser cutting machines?

Analysis of the differences between green laser/infrared/ultraviolet laser applications of various light sources in laser cutting machines:

There are several light sources commonly used in laser cutting machines, such as optical fiber (red light), violet light (ultraviolet), green light, etc. Different light sources are used in different materials, depending on the characteristics of the material to be processed, the thickness of the material, and the processing quality requirements. The higher the requirements for laser beam quality and thermal impact, the absorption of laser bands will be different, and the laser cutting machine selected will also be different.

1. Optical fiber (red light) as the light source of the laser cutting machine:

Fiber Laser refers to a laser that uses rare earth element-doped glass fiber as the gain medium. The wavelength of the fiber is 1064nm. It has high stability, high precision, fast running speed, low processing cost, high laser power, and can cut materials. There are many types, suitable for the processing of large products; fiber optic applicable materials: stainless steel plate, aluminum substrate, ceramic substrate, copper substrate, PCB, ceramic sheet, carbon steel, aluminum alloy, brass, copper, pickled plate, galvanized plate , silicon steel plate, electrolytic plate, titanium alloy, manganese alloy, etc., suitable for cutting various metal materials.

2. Ultraviolet (violet light) of laser cutting machine light source:

Ultraviolet laser has a wavelength of 355nm. Products with this wavelength are all-purpose, and its light spot is also very small. Due to the special UM wavelength, it has this all-purpose title in the traditional processing field. It can be seen in laser marking, laser cutting, and laser welding. In his figure, fiber laser can't sit still, it can do it, it can also process what C02 cannot process, and it performs well in ultrasonic cutting. It can achieve burr-free, neat and smooth, and fast speed for micro and ultra-thin cutting of metal products. , low energy consumption and other advantages. Purple light applicable materials: cover film, FPC soft board, PCB soft and hard board, FPC auxiliary materials, ultra-thin metal, ceramics, polymer materials, resin, silicon wafer, PET/PI/PP film, adhesive film, copper foil, explosion-proof film , electromagnetic film, Sony glue and other types of flexible films.

RFH 5W uv laser drilling silicone

RFH 10W UV DPSS Laser Source cooled marking on copper metal

3. Green laser cutting machine source:

The wavelength of green light is 532nm. Its spot is small and the focal length is shorter.

It belongs to the cold processing mode and plays an irreplaceable role in precision cutting and processing. It can often be seen in industries such as circuit boards, glass, ceramics, jewelry, and glasses. their figures. Applicable materials for green light: precision cutting of cover film, FPC soft board, PCB soft and hard board, PET/PI/PP and other flexible films, ultra-thin glass, ceramic substrate and other materials.

Green laser application

glass drilling with green laser

Fiber laser cutting machines are mainly used in the metal cutting industry.

Currently, the circuit board industry is basically putting into production ultraviolet and green light cutting machines, since they are all used for cutting circuit boards. The main differences between UV laser cutting machines and green laser cutting machines lie in the cost of the equipment, processing efficiency, processing effects and processing purposes.

UV laser cutting machines can take into account FPC soft board cutting, IC chip cutting and some ultra-thin metal cutting in the PCB field.

while high-power green light laser cutting machines can only cut PCB hard boards in the PCB field. In FPC soft board cutting, Although cutting can also be done on boards and IC chips, the cutting effect is lower than that of UV laser. Compared with UV laser cutting machines, green light laser cutting machines are cheaper and more efficient in early processing. However, as the power of UV laser cutting machines continues to increase, this advantage is gradually being equalized. The thermal impact on the processing effect is smaller and the effect is more ideal.

RFH 10W ultraviolet laser marker cutting PCB board