What are the common materials for UV laser marking
Addtime：2021-11-01 Browse times：1305
With the application of UV laser closer and closer to life, it has natural charm in the manufacturing process. According to the characteristics of wave length, narrow pulse width, faster speed, easy material absorption and high peak value, it has become one of the popular industrial laser processing at this stage. UV laser technology is constantly mature, and the manufacturing process has been applied and popularized. At present, the popular marking materials of UV lasers on the market are plastics, glass, ceramics and metals.
The thermal processing of UV laser and fiber laser is just the opposite. People generally call it "cold" production processing. According to the laser with high energy density, local irradiation is carried out on the workpiece to make the surface material gasify or photochemical reaction with color change, so as to reach a kind of permanent identification. Because UV laser marking has no consumables, and the marking effect is meticulous and beautiful, banning the traditional marking process has become an irreversible trend.
UV laser 3C plastic marking
3C products are emerging with the development of electronic industry in recent years. In order to meet the higher and higher aesthetic requirements of contemporary people, the manufacturing process is becoming more and more precise. At the same time, in order to save production costs and a kind of permanent logo, enterprises urgently need to find a new kind of production and processing mode, which has become an urgent requirement at this stage. UV laser marking temperature is low and speed is faster. According to computer remote control, accurate marking can be achieved. Because of the unique properties of UV laser, plastic marking will not cause original deformation, yellow and black graphics and text due to high energy.
Glass carving
Glass technology is often contacted in daily life. It can be used for decoration, storage, decoration, etc. now we often see some beautiful carving processes on cups. They are still picturesque without other color matching. There is no need to worry about fading and pollution sources. At the same time, the speed of UV laser engraving is more refined than manual engraving, the surface is flat and smooth, the efficiency is higher and higher, and the damage is less in mass production.
Silver metal marking process
Friends who know about PCB know that many parts of PCB are made of precious metals, including gold, silver and copper. For small accessories like that, in order to better distinguish them, businesses often add their own unique logo on the surface, but it is difficult to achieve such detailed process standards as the traditional inkjet or sand blasting marking technology. The output spot diameter of UV laser is only 0.7mm and the pulse width is 15nm@30KHz , able to mark parameters in detail.
UV laser equipment can be used in many fields of flexible board production, including FPC appearance cutting, contour cutting, drilling, covering film opening window, soft and hard combination board uncovering and trimming, mobile phone shell cutting, PCB shape cutting and other production and processing fields. The laser marking handwriting is clear and bright, and can mark black and white handwriting.
At this stage, UV laser technology is relatively mature, at 3-10W, and is widely used in many industrial "micro production and processing" fields. It can be directly used in wafer cutting, film etching, laser marking, ceramic cutting, etc. Under the background of the made in China 2025 strategy, the traditional industrial manufacturing industry is facing deep transformation. One direction is to improve efficiency. At the same time, it is turning to high-end precision processing with higher added value and higher technical barriers. The development of UV laser technology is fully in line with this trend.
