How to judge the cutting quality of fiber laser cutting machine
Many companies that buy fiber laser cutting machines will look for manufacturers to sample and see how the cutting is done, but how does the laser cutting machine cut? Share it.
1. Roughness
Fiber laser cutting section will form vertical lines, the depth of the line determines the roughness of the cutting surface, the shallower the line, the smoother the cutting section. Roughness affects not only the appearance of the edges, but also the friction characteristics. In most cases, it is necessary to reduce the roughness as much as possible, so the shallower the texture, the higher the cutting quality.
2. Verticality
If the thickness of the sheet metal exceeds 10mm, the perpendicularity of the cutting edge is very important. When away from the focal point, the laser beam becomes divergent, and depending on the position of the focal point, the cut widens toward the top or bottom. The cutting edge is a few millimeters away from the vertical. The more vertical the edge, the higher the cutting quality.
3. Cutting width
The cutting width generally does not affect the cutting quality. The cutting width has an important effect only when a particularly precise contour is formed inside the part. This is because the cutting width determines the minimum internal warp of the contour. When the thickness of the plate increases, the cutting width also increases Increase. Therefore, if you want to ensure the same high precision, no matter how large the width of the cut, the workpiece should be constant in the processing area of the fiber laser cutting machine.
4. Grain
When cutting thick plates at high speed, the molten metal will not appear in the cut under the vertical laser beam, but will be ejected at the back of the laser beam. As a result, curved lines are formed at the cutting edge, and the lines closely follow the moving laser beam. To correct this problem, reducing the feed rate at the end of the cutting process can greatly eliminate the formation of lines.
5. glitch
The formation of burrs is a very important factor that determines the quality of fiber laser cutting machine. Because the removal of burrs requires additional work, the severity and amount of burrs can be used to intuitively judge the cutting quality.