The Core Principle of Laser Cutting

The core principle of laser cutting:

The laser beam generated by the laser generator is focused by the optical path system (reflectors, focusing lenses) to form a spot with an extremely small diameter and highly concentrated energy. When this spot acts on the workpiece surface:

Thermal effect: The material in the spot area instantly absorbs the laser energy, causing the temperature to rise rapidly, reaching the melting temperature (melting cutting) or vaporization temperature (vaporization cutting); some material may also be ignited due to the high temperature, undergoing an exothermic reaction with the assist gas (oxidation cutting, mainly used for carbon steel).

Slag removal effect: The high-pressure assist gas ejected coaxially blows the molten slag or vaporized material away from the cutting area in a timely manner, preventing slag from adhering to the workpiece surface or clogging the cut.

Motion control: The CNC system controls the laser head or workpiece to move according to the preset cutting path, ultimately forming the part contour that meets the drawing requirements.