With the continuous development of the manufacturing industry, laser drilling technology is gradually replacing traditional CNC drilling processes, particularly in the processing of glass cover plates, where it demonstrates remarkable advantages.
Laser drilling utilizes high-energy laser beams to accurately create uniform holes on the glass surface, achieving high efficiency and precision in processing.
During the laser drilling process, the laser beam is focused on the glass surface through an optical system, generating a high-temperature area that rapidly melts or vaporizes the glass locally.
Key parameters in this process include laser power, pulse frequency, drilling speed, and spot diameter.
- Laser Power: The laser power typically ranges from 20W to 300W, depending on the thickness of the glass and the diameter of the holes. Higher power can accelerate heat transfer, thereby achieving faster drilling speeds.
- Pulse Frequency: The pulse frequency is usually set between 1 kHz and 20 kHz. Higher frequencies allow for the creation of smaller diameter holes while reducing the heat-affected zone, preventing glass cracking.
- Drilling Speed: Laser drilling speeds can reach hundreds of holes per minute, with each hole diameter generally controlled between 0.1 mm and 5 mm, making it 3 to 5 times more efficient than CNC drilling, especially suitable for mass production.
Many modern devices require glass cover plates with multi-hole designs to meet needs such as cooling, ventilation, and audio-visual functions.
The laser drilling process perfectly addresses the issues of efficiency and cost. Compared to traditional CNC drilling, laser drilling is not only faster but also reduces the per-unit cost in large-scale production.
The flexibility of laser drilling is another significant advantage. Laser processing does not require embedded tools, allowing for quick adjustments to hole designs to accommodate different product requirements.
Moreover, the thermal impact during laser drilling is minimal, reducing glass deformation and stress concentration, thus ensuring product quality.
Furthermore, laser drilling can be integrated with other processing techniques, such as laser cutting and engraving, to create more complex structures and patterns, providing additional possibilities for multi-hole designs in glass cover plates.
This mature technology is poised to further advance the application of glass products in smart homes, electronic devices, and architectural decoration.
