Nine standards to judge the quality of Laser cutting machine
1. Roughness, laser cutting segment will form a vertical pattern, the depth of the pattern determines the cutting surface roughness, the more shallow the pattern, the more smooth cutting segment. Roughness affects not only the appearance of the edge, but also the friction characteristics. In most cases, the roughness needs to be as small as possible. Therefore, the shallower the pattern, the higher the cutting quality.
2. Verticality, how to make the thickness of the plate more than 10 mm, cutting edge of the verticality is very important. When out of Focus, the laser beam diverges and the cut widens toward the top or bottom depending on the focus position. The more vertical the edge, the higher the cutting quality.
3. Cutting width, generally speaking, cutting width does not affect the quality of cutting. It is only when a special precise contour is formed inside the part that the cutting width has an important influence. This is because the cutting width determines the minimum internal pass of the profile. When the plate thickness increases, the cutting width increases. Therefore, in order to ensure the same high precision, no matter how wide the cutting, the workpiece in the Laser Cutting Machine processing area should be constant.
4. Grain, high-speed cutting thick plate, in the vertical laser beam cutting will not appear molten metal, but in the back of the laser jet out. Results: The curved pattern formed by laser trimming was closely related to the laser motion. In order to solve this problem, at the end of cutting to reduce the feed speed, greatly eliminating the formation of patterns.
5. Burr, burr formation determines the quality of laser cutting is a very important factor, because the removal of Burr requires additional work, so the number and number of Burr can directly determine the quality of cutting.
6. Material deposition, laser cutting machine in the melting and drilling before the first contact with the surface of the special oil-bearing liquid workpiece. Cutting, due to gasification and a variety of materials are not used, the customer to remove the wind cutting, but upward or downward discharge will also be deposited on the surface.
7. Pitting and corrosion, pitting and corrosion have adverse effects on the surface of the cutting edge, affecting the appearance. They should generally avoid clipping errors when they occur.
8. Heat-affected area. In laser cutting, the area near the cutting is heated. At the same time, the structure of the metal changed. For example, some metals harden. The Haz is the depth of the area where the internal structure changes.
9. Deformation. If the cutting causes the part to heat up rapidly, it will deform. This is particularly important in fine machining, where profiles and connections are usually only a few millimetres wide. The control of laser power and the use of short laser pulses can reduce thermal changes and avoid parts deformation.
