How to judge the cutting quality of laser cutting machine?
Judging the cutting quality of a laser cutting machine is the best way to determine the performance of a laser cutting equipment intuitively. Here, the editor of Hongte Laser has listed nine standards for judging the cutting quality of a laser cutting machine. The customer chooses the manufacturer to refer to when choosing the equipment.
Laser cutting section will form vertical lines. The depth of the lines determines the roughness of the cut surface. The shallower the lines, the smoother the cut section. Roughness affects not only the appearance of the edges, but also the friction characteristics. In most cases, the roughness needs to be reduced as much as possible, so the shallower the grain, the higher the cutting quality.
If the thickness of the sheet metal exceeds 10mm, the verticality of the cutting edge is very important. When away from the focus, the laser beam becomes divergent, and the cut becomes wider toward the top or bottom depending on the position of the focus. The cutting edge deviates from the vertical line by a few hundredths of a millimeter. The more vertical the edge, the higher the cutting quality.
3. Cutting width
In general, the cutting width does not affect the cutting quality. The cutting width is only available when a particularly precise contour is formed inside the component Important influence, this is because the cutting width determines the minimum inner warp of the contour. When the thickness of the sheet increases, the cutting width also increases. Therefore, in order to ensure the same high accuracy, no matter how large the width of the incision is, the processing area of u200bu200bthe workpiece in the laser cutting machine should be constant.
When cutting thick plates at high speed, the molten metal will not appear in the incision below the vertical laser beam, but will spray out behind the laser beam. As a result, curved lines are formed on the cutting edge, and the lines closely follow the moving laser beam. In order to correct this problem, reducing the feed rate at the end of the cutting process can greatly eliminate the formation of lines.
When the burr is formed, it is a very important factor that determines the quality of laser cutting. Because the removal of the burr requires extra work, the amount of burr is serious and how much It can intuitively judge the quality of cutting.
6. Material deposition
Before the laser cutting machine starts to melt and perforate, it first encounters a layer of special oily liquid on the surface of the workpiece. Vaporization and various, the material does not need the customer to use the wind to remove the incision, but the upward or downward discharge will also form a deposit on the surface.
7. Depression and corrosion
Depression and corrosion have an adverse effect on the surface of the cutting edge and affect the appearance. They appear in cutting errors that should generally be avoided.
8. Heat-affected zone
In laser cutting, the area near the incision is heated. At the same time, the structure of the metal changes. For example, some metals will harden. The heat-affected zone refers to the depth of the area where the internal structure changes.
If the part heats up sharply by cutting, it will deform. This is especially important in fine machining, because the contours and connecting pieces here are usually only a few tenths of a millimeter wide. Controlling the laser power and using short laser pulses can reduce parts heating and avoid deformation.
The above is the content introduced by the editor of Hongte Laser Company.
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