大发体育Laser cutting technology is used by more and more industries. With the continuous development of science and technology and the transfer of large manufacturing countries to China, the future mechanical manufacturing industry has also highlighted higher processing requirements. The automobile industry, shipbuilding industry and so on all put forward different processing requirements for the laser cutting machine industry.
1. Control fracture cutting.
大发体育For brittle materials which are easy to be destroyed by heat, high-speed and controllable cutting by laser beam heating is called controlled fracture cutting. The main content of this cutting process is: laser beam heating brittle material small area, causing large thermal gradient and serious mechanical deformation in this area, resulting in material cracks. As long as a balanced heating gradient is maintained, the laser beam can guide cracks in any direction required.
大发体育2. Oxidation and cutting
Melting cutting generally uses inert gases, if replaced by oxygen or other active gases, materials are ignited under the irradiation of laser beams, and react with oxygen to produce another heat source, called oxidation melting cutting.
3. Melt cutting
When the incident laser beam power density exceeds a certain value, the material evaporates at the irradiation point, forming a hole. Once the pore is formed, it will absorb all incident beam energy as a blackbody. The hole is surrounded by a wall of molten metal, and then the molten material around the hole is carried away by an auxiliary flow coaxial with the beam. As the workpiece moves, the hole moves along the direction of cutting to form a slit. The laser beam continues to illuminate along the front edge of the seam, and the molten material is blown continuously or pulsating from the seam.
4. Vaporization cutting
When heated by a high power density laser beam, the surface temperature of the material rises to the boiling point so fast that it can avoid melting due to heat conduction, that part of the material vaporizes into vapor and disappears, and part of the material is blown away from the bottom of the notch by auxiliary gas as a jet.
大发体育Above is the laser cutting processing technology requirements, the future laser cutting technology will have a better development, I hope the above introduction can really help everyone.
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