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Laser power is one of the most important parameters of a laser cutting machine. The higher the power, the faster the cutting speed and the greater the cutting thickness. Generally speaking, laser power is the power of the laser. As for the material properties, if the surface reflectivity of the material is high, then when the laser is irradiated to the surface of the material, more energy will be reflected back instead of being absorbed by the material for cutting. Therefore, in order to ensure sufficient energy for cutting, the power of the laser needs to be increased. Similarly, if the thermal conductivity of the material is good, the heat generated by the laser irradiation will be quickly conducted inside the material, making it difficult for the temperature of the cutting area to rise to a level sufficient for cutting. At this time, the power of the laser also needs to be increased to improve the cutting efficiency. In addition, cutting materials with high melting points also requ
(1)Causes of black explosion points When the laser passes through the stain, a violent oxidation reaction will occur to form gas, which will directly affect the stability of the molten pool keyhole and form a black explosion point. Specifically, the molten pool keyhole is abnormally closed, resulting in insufficient melting depth, insufficient melting width, unmelted surface or direct penetration of the parent material, which requires metallographic cutting to assist in judgment.
Applicable scenarios and industries of laser welding 1.Heat conduction welding is mainly used for precision processing, such as visible edge processing of metal sheets, medical technology, etc.; 2.Deep penetration welding and brazing are mainly used in the automotive industry, among which deep penetration welding is used for car body, transmission, housing, etc.; brazing is mainly used for car body welding; 3.Laser conduction welding can process non-metals and has a wide range of applications. It can be used in consumer goods, automotive industry, electronic housing, medical technology, etc.; 4. Composite welding is mainly suitable for special steel structures, such as ship decks.
