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Materials and advantages of UV laser marking machine engraving
UV laser marking machine can mark or cut non-metallic materials such as metal, plastic, glass, etc. It is used in the fields of semiconductor, electronic and electrical housing, auto parts marking, glass processing, medical equipment and engineering plastics marking. . The surface marking of packaging bottles and boxes of cosmetics, medicines, food and other polymer materials has fine effect, clear and firm marking, better than ink Leadtech Coding and no pollution. LCD liquid crystal glass two-dimensional code marking, mobile phone flip marking, glass surface marking, etc.
The core component of the UV laser marking machine is the UV laser, which has its unique advantages in laser processing: the UV laser has a short wavelength, small focus, It can realize fine processing; UV laser directly destroys the chemical bonds of materials during laser processing, which is a 'cold' processing process, with a small heat-affected zone, most materials can effectively absorb UV light, and can process many materials that cannot be processed by infrared and visible light lasers. . All-solid-state UV lasers have the advantages of small size, high efficiency, high repetition rate, no gas replacement, no mask, and easy maintenance. Therefore, it has been widely used in the fields of bioengineering, material preparation, all-optical optical device fabrication, especially in the laser processing fields of integrated circuit boards and semiconductor industries.
At present, the development of ultraviolet laser is very rapid, and its inherent advantages are gradually revealed. High-repetition-frequency all-solid-state lasers above watt-level power are continuously used in the field of laser marking and processing. Domestic and foreign research institutions and companies continue to move towards higher power (tens of watts) and higher repetition frequencies (tens or even hundreds of kHz). developing. At present, we have successfully developed a 5W, 50kHz UV 355nm laser and a finished machine with a pulse width of 25ns. Moreover, the 10W and 30W prototypes have stable performance and are used for scribing LED sapphire wafers. The scribing depth reaches 200μm, the line width is less than 10μm, the scratches are smooth and uniform, and there is almost no heat-affected zone. The current international market price of UV 355nm laser is about At $20,000/W, the medium and high-power all-solid-state UV laser market is occupied by foreign manufacturers. Mainly used for punching, cutting, scribing and marking. Taking the laser dicing machine as an example, according to the current market demand, the general sales volume of traditional laser dicing machines is 100 units per year, of which 60% will be replaced by ultraviolet all-solid-state lasers; the domestic annual demand for laser marking machines is about 4,000 units. Taiwan, in which all-solid-state UV lasers will replace 30% of the market share.
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