Laser fusion cutting and perforation technology input laser beam power density, high energy, light beam irradiation point of the material began to evaporate, the formation of holes, holes surrounded by molten metal, coaxial with the beam of auxiliary airflow to the hole around the molten material away. When the workpiece moves, the hole moves horizontally synchronously to form a slit to complete the cutting. For thermal cutting technology, generally must be used punch in the plate through a hole and then laser from the hole began to cut the method, only a few processing workpiece in the processing can start from the edge of the plate.
The basic method of laser cutting machine without stamping device:Blasting perforation: the material is irradiated by a continuous laser to form a pit in the center. Oxygen flow coaxial with the laser beam quickly removes the molten material to form a hole.
The processing head and the processed material according to the pre-drawn graph for continuous relative movement dot, so that the object will be processed into the desired shape. When cutting, a coaxial airflow with the beam is ejected from the cutting head, and the molten or vaporized material is blown out from the bottom of the cut (note: if the blown gas and the material to be cut produce a thermal reaction, this reaction will provide additional energy required for cutting; Airflow also has the function of cooling the cut surface, reducing the heat affected zone and ensuring the focus lens is not contaminated. It should be noted that this controlled fracture cutting is not suitable for cutting acute and corner seam cuts. Cutting very large closed shapes is not easy to achieve success. Control fracture cutting speed, do not need too high power, otherwise it will cause the workpiece surface melting, damage the edge of the slit. The main control parameters are laser power and spot size
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