Metal laser cutting machine focuses a laser beam into a small light spot with a minimum diameter (which can be less than 0.1mm), so that the power density at the focus can reach a high level (which can exceed 106W/cm2). At this time, the heat input by the light beam (converted by light energy) far exceeds the part reflected, conducted or dispersed by the data, and the data is quickly heated to the vaporization temperature, which evaporates to form holes. With the relative linear movement of the light beam and the data, the holes are connected to form a slit with a narrow width (such as about 0.1mm). The thermal influence of trimming is very small, and there is basically no workpiece deformation. Auxiliary gas suitable for the data to be cut is also added in the cutting process. When cutting steel, oxygen must be used as auxiliary gas to react with molten metal in an exothermic chemical way to help blow away the slag in the cutting seam. Compressed air is used for cutting polypropylene and inert gas is used for cutting flammable materials such as cotton and paper. The auxiliary gas entering the nozzle can also cool the focusing lens, and prevent smoke from entering the lens holder to pollute the lens and cause the lens to overheat. It has the following processing characteristics:

(1) laser, cutting machine processing flexibility.

Metal laser cutting machine does not need the preparation of molds and auxiliary consumables, and can be processed in real time whether it is a single product, a variety of small batch products or different graphic processing requirements.

② Advanced processing technology.

After laser focusing, the spot diameter of metal laser cutting machine is very small, the machining is fine, the heat affected zone of machining data is small, and the workpiece is basically not deformed. The laser beam can process Ned workpiece of interlayer or sealed container through transparent material, and can focus on high-energy light spot of wavelength level for micro-area processing, and can complete some processes that cannot be completed by conventional methods.

③ Low processing cost and simple operation.

Laser processing does not need to add other work and consumables, as long as the laser works normally, it can be processed in succession for a long time. The processing speed is fast, the cost is low, the automatic production can be completed by computer control, and the operation is simple and convenient to change.

④ Meet environmental protection requirements.

The laser processing of metal laser cutting machine is non-toxic, clean and hygienic, which meets the environmental protection requirements of various countries and avoids the constraints formed by corrosion, screen printing and other processes.