Why UV laser marking machine can make glass

Glass, as a synthetic and fragile product, is a transparent material, although it can bring various conveniences to production, it has always been what people want to change in terms of appearance and decoration, so how can various patterns and characters be better The appearance of implanted glass products has become the goal pursued by consumers. Since glass has a better absorption rate for ultraviolet lasers, in order to prevent glass from being damaged by external forces, ultraviolet laser marking machines are currently used for engraving.

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, and can achieve fine processing; UV laser The chemical bond of the material is directly destroyed during laser processing, which is a 'cold' processing process with a small heat-affected zone. Most materials can effectively absorb ultraviolet light, and many materials that cannot be processed by infrared and visible light lasers can be processed. All-solid-state UV lasers have the advantages of small size, high efficiency, high repetition rate, no gas replacement, no mask, and easy maintenance. The wavelength of the UV laser marking machine is 355nm. The extremely small wavelength determines that it has high beam quality, small focusing spot, and can realize the ultra-fine marking requirements of glass products. Its small Z characters can reach 0.2mm.

In recent years, the development of ultraviolet lasers has been very rapid and gradually revealed its inherent advantages. High-repetition-frequency all-solid-state lasers above watt-level power are continuously used in the processing field, and domestic and foreign research institutions and companies are constantly developing towards higher power (tens of watts) and higher repetition frequencies (tens or even hundreds of kHz). In China, a 5W, 50kHz UV 355nm laser and a finished machine with a pulse width of 25ns have been successfully developed. Moreover, the 10W and 30W prototypes have stable performance and are used for scribing of LED sapphire wafers. The scribe 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 technology of UV marking machine surpasses traditional processing and makes up for the shortcomings of low processing accuracy, difficulty in drawing, damage to workpieces, and pollution of the environment in the past. The new favorite of glass products processing, UV laser marking machine can provide clear and lasting lettering on glass bottles of almost any color or type, and is listed as a necessary processing tool in various wine glasses, craft gifts and other industries. When engraving glass with a UV laser marking machine, the marking time will affect the marking effect on the glass surface. Long processing time will result in too deep engraving on the glass surface. If processing time is too short, it will lead to leakage points. Therefore, when debugging It takes patience and many attempts, and finally defines the best numerical parameters for processing.

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