As we all know, the fiber laser cutting machine has higher processing accuracy and better cutting effect than the traditional process, which is also its advantage. But did you find it? In the long-term processing process, sometimes it is found that the processing effect of the laser cutting machine is not ideal. So, what factors will affect the accuracy of fiber laser cutting machine? Laser, cutting material, cutting parameters, auxiliary gas, etc. will affect the processing effect of fiber laser cutting machine. The following Leapion laser manager gives you an analysis as follows:
After the fiber laser cutting machine is used for a long time, the laser power will more or less decrease, which will directly affect the cutting performance of the laser cutting machine; because the laser power determines the cutting performance of the fiber laser cutting machine, such as single-mode, multi-mode, The low mold is suitable for thin plate cutting, and the high mold is suitable for thick plate cutting.
The beam emitted by the laser of the fiber laser cutting machine is cone-shaped, and the cut gap is also cone-shaped. The shape of the laser beam is one of the factors that affect the accuracy of laser cutting. Because, the smaller the spot after the laser beam is focused, the smaller the slit and the higher the processing accuracy; under such laser beam conditions, the thicker the product, the lower the accuracy, and the larger the slit, which can cut metals of different thickness. When setting the appropriate laser power to ensure a better cutting effect.
If the actual cutting height of the fiber laser cutting machine is not accurate, it needs to be calibrated. It is recommended that the actual cutting height is between 0.8~1.2mm
The laser cutting speed is directly related to the power of the laser. The greater the power, the higher the cutting speed.
Check whether the model and size of the cutting nozzle are used incorrectly. If they are correct, check whether the cutting nozzle is damaged and whether the roundness is normal. It is recommended to use a cutting nozzle with a diameter of 1.0 to check the optical center of the fiber laser cutting machine. The focus should be between -1 and 1 when checking the optical center. The light spot is small and easy to observe.
The focus position affects the cutting progress, and the diameter of the focus spot should be as small as possible to produce a narrow slit. If the cutting performance decreases, the focus position can be adjusted.
The distance between the processed workpiece and the nozzle also affects the cutting effect of the laser cutting machine, so it is necessary to adjust the appropriate distance without affecting the cutting performance.
The thickness of the cutting material of the fiber laser cutting machine is between 0.1-12mm. Laser cutting is most suitable for cutting thin plates. The best thickness is carbon steel under 12mm and stainless steel under 6mm. The processed quality is obviously enhanced, and the efficiency also appears. Guaranteed. If you cut materials less than 1mm, the cut will be extremely smooth.
The surface roughness of the material and the surface roughness of the material also determine the quality of the cutting. Generally, the smoother the material, the better the quality of the cut.
Melting point and laser absorption rate of cutting material
The melting point of the cutting material will affect the cutting effect, and the material absorption rate of the laser is 1.64um.
The higher the pressure of the auxiliary gas, the higher the purity of the gas, the less impurities adhered to the material, and the smoother the cut. Generally speaking, the oxygen cutting speed is the fastest, and the nitrogen cutting effect is the best, and the cost is also low. Different gases have different cutting effects.
1) The higher the purity of the cutting oxygen, the faster the combustion reaction speed, and the faster the cutting speed. If the oxygen purity is poor, not only the cutting speed will be greatly reduced, the cutting quality will deteriorate, and the oxygen consumption will increase.
2) If the oxygen flow is insufficient, the metal cannot be fully burned, which will easily cause slag sticking, and the cutting speed will slow down. Too much oxygen flow will make the metal cold zone, easily cause slag sticking, and even cause insufficient preheating of the metal, which will interrupt the cutting. Therefore, there is an optimal oxygen flow value for a certain steel plate thickness. At this time, not only the cutting speed is the highest, but also the quality of the cut surface is good.
3) As the cutting oxygen pressure increases, the cutting oxygen flow rate increases accordingly, and the ability to remove sticky slag is enhanced, so the thickness that can be cut increases accordingly. However, when the pressure is increased to a certain value, the thickness that can be cut also reaches the maximum value. When the pressure is increased, the thickness of the cutting is reduced.
4) Cutting oxygen flow shape: In order to make the cutting width consistent up and down along the thickness direction and obtain good cutting quality, the cutting oxygen flow is required to maintain a cylindrical shape in the longest possible range, with clear boundary lines, and straight and strong. If the wind line is thick and the boundary line is chaotic, not only will the speed be reduced, but the quality of the cut surface will deteriorate, and slag will adhere to the lower edge of the cut.
When the fiber laser cutting machine is cutting, the worktable will vibrate with the vibration of the laser head. The high-precision worktable is matched with a stable linear guide, the higher the cutting accuracy will be. The uneven worktable or other reasons will also affect the laser cutting machine. A major factor in machining accuracy.
In addition to the above factors, improper operation, long-term load production, long-term failure to maintain, etc. will cause the performance of the fiber laser cutting machine to decline, and the cutting effect will be greatly reduced.
The processing time of fiber laser cutting machine is long, and many parts will be worn out. Obviously, it will affect the performance of processing equipment. Maintenance is very important. The wearing parts should be replaced frequently; the optical components should be wiped clean after use to maintain cleanliness; the bearings should be regularly oiled to maintain the flexibility and processing accuracy of the drive.
The fiber laser cutting machine should be operated by a dedicated person. Before getting started, it should be trained by professionals: it is very important to execute the switch machine sequence correctly, be familiar with each switch panel button, operate the fiber laser cutting machine correctly, and so on. Specialized operation is not only conducive to the normal operation of the fiber laser cutting machine, but also reduces the probability of safety accidents.
Pay attention to the above points, we can improve the cutting quality of the fiber laser cutting machine and ensure the best performance of the equipment! For more professional questions, please contact Leapion Laser directly. Leapion Laser 7×24 hours online service!