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Views: 9 Author: heyu Publish Time: 05-29-2020 Origin: Leapion fiber laser cutting machine
The agents and customers of the stainless steel fiber laser cutting machine are highly praised. The high-precision anti-collision professional laser cutting head of the fiber laser cutting machine ensures the cutting effect with lower power consumption. The power consumption per hour is only 1 degree, which greatly reduces the production cost. The metal sheet laser cutting machine adopts imported original laser and laser head, with higher configuration and performance at the same price stable. The operation is flexible and simple, with laser power adjustment function, which can ensure the cutting quality, and the operation is simple and convenient.
It is estimated that the heat released by oxidation reaction during steel cutting accounts for about 60% of the total energy required for cutting. Under the heating of high power density laser beam, the temperature of material surface rises to boiling point so fast. When cutting sharp corner parts with continuous laser, if the cutting parameters are matched or the operation is improper, the sharp corner can not be formed due to the self burning at the turning point of sharp corner.
Before laser cutting, it is necessary to adjust the position of the beam focus on the workpiece according to the material. Because the laser beam, especially the CO2 gas laser, is invisible to the naked eye, the focus position can be detected by the wedge shaped propylene block, and the height of the cutting torch can be adjusted to set the focus. It is enough to avoid the melting caused by heat conduction, so part of the material vaporizes into steam and disappears, and part of the material is blown away from the bottom of the slit by the auxiliary gas flow as the ejecta. The way to solve this problem is to choose the appropriate cutting parameters, but there is no burning problem at the sharp corner when using pulse laser cutting.
When the thickness of the workpiece is large (for example, the thickness of the plate is 2-4mm), the normal gas pressure is used to perforate, and a relatively large size solution pit will be formed on the surface of the workpiece. Some materials that can't be melted, such as wood, carbon materials and some plastics, are cut by this kind of vaporization cutting method. Not only the cutting quality is affected, but also the splashing of molten material may damage the lens or nozzle. At this time, the pressure of the auxiliary gas should be increased properly, and the distance between the nozzle aperture and the workpiece should be increased slightly. The disadvantage of this method is that the gas flow rate increases and the cutting speed decreases. When the power density of the incident laser beam exceeds a certain value, the interior of the material begins to evaporate at the irradiation point of the beam, forming a hole.
Laser cutting 4mm aluminum
It is not necessary to use high power cutting machine to control the speed of laser cutting. Otherwise, the surface of workpiece will melt and the edge of cutting seam will be damaged. The main control parameters are laser power and spot size. This cutting process is mainly to heat the small area of brittle material by laser beam, resulting in large thermal gradient and serious mechanical deformation in this area, leading to the formation of cracks in the material.
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