The laser is magic, and laser have been able to apply to various industries, such as textile fabrics used in metal cutting, cutting, laser marking, laser engraving and so on, and a lot of people on the principle of the laser is not very clear, today we have the detailed explanation
The laser beam is focused on a small point of light and its minimum diameter (less than 0.1mm) makes the focus of a very high power density (more than 106W/cm2). At this time, the heat input of the beam is far more than that of the material being reflected, transmitted or diffused. The material is quickly heated to the vaporization temperature and evaporated to form holes. With the relative linear movement of the beam to the material, the hole is continuously formed in a narrow (like 0.1mm) slit. The effect of cutting edge heat is very small, and basically there is no deformation of the workpiece.
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