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High-power CNC metal laser cutter
Updatetime: 2021-07-12 10:29View:
    High-power CNC metal laser cutter
    In recent years, the fiber laser market is undoubtedly the most important and fastest growing field in the entire laser industry. In addition to competition in cutting technology, cutting speed, after-sales service, etc., laser cutter manufacturers have also made breakthroughs in high-power technology.
    Since entering the market, fiber lasers have developed rapidly in the past ten years. The higher the power, the more expensive the laser cutting machine. Power is one of the main factors that directly affect the price of laser cutters. Laser cutters can be divided into low power, medium power and high power according to power. For thin stainless steel and carbon steel plates, the low-power fiber laser cutter can cut well, ensuring a higher cutting speed and saving costs.
    At present, the market share of fiber lasers in the industrial field has exceeded 50%, and it is the invincible hegemon in this field. There is no doubt that fiber lasers have become the backbone of the laser industry and will continue to exist for a long time to come.    However, when purchasing a laser cutter, it is recommended that customers choose materials reasonably according to their own materials and material thickness, instead of blindly pursuing high power.
    High-power laser cutter fiber laser can not only cut a variety of highly reflective metals, but also can be widely used. The comprehensive fiber laser has a wide range of materials, strong applicability and low maintenance cost. It can not only process ordinary carbon steel, stainless steel, alloy and non-metal materials, but also cut and weld high-reflective metals such as brass, aluminum, copper, gold, and silver.
    If your processing board has thick and thin plates, and the production capacity is in great demand, then a high-power laser cutter within your own price range is also a better choice. Because the high-power laser cuter can control the cutting quality well by adjusting the cutting speed and changing the auxiliary gas appropriately.
    Is the higher the power of the laser cutter the better?
    In fact, this idea is very one-sided. The higher the power, the higher the cost of the laser cutter.Power is one of the main factors affecting the price of laser cutter. The high-power laser cutter puts forward higher requirements for its hardware. The upgrade of the entire equipment will make the cost of the entire equipment soar.
    Therefore, when choosing the power of the equipment, the acceptable price range should be considered. The higher the power, the better? This is not necessarily! Laser cutters can be divided into low power, medium power and high power according to power. For thin stainless steel and carbon steel plates, a low-power fiber laser cutter can be used for good cutting, and a higher cutting speed can be guaranteed, which not only ensures efficiency, but also saves costs. Therefore, when buying a laser cutter, you should choose the material according to your own material and material thickness, instead of blindly pursuing high power.
 

    Stainless steel fiber laser cutter for thin plate processing
    The stainless steel agent and customer fiber laser cutter are highly praised. The high-precision anti-collision professional laser cutting head of the fiber laser cutter ensures the cutting effect with lower power consumption. The power consumption per hour is only 1 kWh, which greatly reduces the production cost. Sheet metal laser cutter adopts imported original laser and laser head, with high structure and performance, and stable price. The operation is flexible and simple, with the laser power adjustment function, ensuring the cutting quality, and the operation is simple and convenient.
    It is estimated that the heat released by the oxidation reaction during steel cutting accounts for about 60% of the total energy required for cutting. Under the heating of the high-power density laser beam, the surface temperature of the material rises rapidly to the boiling point. When continuous laser cutting of acute-angle parts, if the cutting parameters are matched or the operation is improper, the acute angle cannot be formed due to spontaneous combustion at the acute corner.
    Before laser cutting, the position of the beam focused on the workpiece must be adjusted according to the material. Since the laser beam, especially the CO2 gas laser, is invisible to the naked eye, the focus position can be detected by the wedge-shaped acrylic block, and the height of the torch can be adjusted to set the focus. This is enough to avoid melting caused by heat conduction, so part of the material evaporates into steam and disappears, and part of the material is blown away from the bottom of the slit by the auxiliary airflow as a jet. The way to solve this problem is to choose appropriate cutting parameters, but there is no burning problem at sharp corners during pulse laser cutting.
    When the thickness of the workpiece is large (for example, the thickness of the plate is 2-4mm), normal gas pressure is used to perforate to form a larger size dissolution pit on the surface of the workpiece. For some infusible materials, such as wood, carbon materials and some plastic materials, use this vaporization cutting method to cut.
    Not only will the cutting quality be affected, but splashes of molten material will damage the lens or nozzle. At this time, the pressure of the auxiliary gas should be appropriately increased to slightly increase the distance between the nozzle aperture and the workpiece. The disadvantage of this method is that the gas flow increases and the cutting speed decreases. When the power density of the incident laser beam exceeds a certain value, the inside of the material starts to evaporate at the irradiation point of the beam, forming a cavity.
    There is no need to use a high-power laser cutter to control the speed of laser cutting. Otherwise, the surface of the workpiece will melt and the edge of the cutting seam will be damaged. The main control parameters are laser power and spot size. This cutting process mainly uses laser beams to heat a small area of ​​brittle materials, which results in large thermal gradients and severe mechanical deformations in this area, leading to cracks in the material.
 

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