Because glass has high hardness, high brittleness, and high light transmittance, it is difficult to process with conventional mechanical tools, which often leads to edge chipping. These characteristics make it necessary for laser engraving to be precisely controlled. The role of the laser controller here is mainly to drive the laser for stable output, while simultaneously coordinating the motion system (X, Y, Z axes) and laser power in real time.
A CO₂ laser is well absorbed by the glass surface and is commonly used for surface engraving. The engraving effect of a CO₂ laser appears as a frosted, white pattern, making it suitable for advertising, artistic decoration, and gift lettering. Ultraviolet (UV) lasers, on the other hand, feature a shorter wavelength and operate in a “cold processing” mode with a minimal heat-affected zone. UV lasers are capable of producing fine lines, QR codes, and logos.
When engraving glass, the laser controller must regulate the power to ensure uniform energy distribution, otherwise the glass may crack. The laser controller must also synchronize motion control with power output to ensure the trajectory and power remain strictly aligned, preventing unwanted burn marks.The laser controller must be synchronized, and the laser power switch must be synchronized with the motion trajectory, otherwise bright spots or uneven lines will appear. Beyond this, the laser control card needs strong compatibility to support different types of lasers.
The choice of laser control card for glass engraving depends on the desired processing method and precision requirements.The key lies in whether the laser control card has stable power regulation capabilities, good trajectory synchronization and compatibility with different laser types, which are the core factors for the success of glass engraving.
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