The laser cutting technology in the metal fabrication workshop, as a new process, is the product of modern scientific development. The advantage of using a laser cutting machine is high cutting accuracy.
CO2 laser or YAC laser is commonly used to process two-dimensional and three-dimensional cutting.
The power of laser source varies from 5W to 90kW, lasers of 100W to 1500W powder are mainly used in cutting sheet metal parts.
When the output power is less than 1500W, the laser source is on the single-mode oscillation position, and 0.2mm width can be cut. The cut is clean and flat by that; when the output power is bigger than 1500w, the laser source on multi-mode oscillation position. The pattern can be cut with a width of 1mm, but there will be a small amount of dirt.
When the thick plate is cut, auxiliary gas is needed to be used. The auxiliary gas includes air, oxygen and nitrogen, among which nitrogen can prevent the oxidation of the cut surface during the cutting process, and the oxygen is suitable for the high-speed cutting of the thicker plate. CAD or CAM technology can be used on laser cutting sheet metal to provide machining information and processing parameters for the processing of work-piece models and lasers, enabling rapid and high-precision production and automated cutting.Especially, it requires mold replacing, which can shorten the production preparation cycle and reduce the production cost.
Laser cutting technology, laser welding technology, laser drilling technology and laser forming technology also require skillful manipulation by technicians in the production and processing of cutting sheet metal. With the development of laser processing technology, the production and processing of metal fabrication workshops will inevitably achieve a stable, reliable, efficient and highly automated degree.
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