1. Roughness. The laser cutting section will form vertical lines. The depth of the lines determines the roughness of the cutting surface. The shallower the lines, the smoother the cutting section. Roughness not only affects the appearance of the edges, but also affects the friction characteristics. In most cases, it is necessary to reduce the roughness as much as possible, so the shallower the grain, the higher the cutting quality.

2. Verticality. How the thickness of the sheet metal exceeds 10mm, the perpendicularity of the cutting edge is very important. When away from the focus, the laser beam becomes divergent, and the cutting becomes wider towards the top or bottom according to the position of the focus. The cutting edge deviates several millimeters from the vertical line. The more vertical the edge is, the higher the cutting quality is.

3. Cutting width. Generally speaking, the cutting width does not affect the cutting quality. The cutting width has an important impact only when a particularly precise contour is formed inside the part. This is because the cutting width determines the minimum inner diameter of the contour. When the plate thickness increases, the cutting width also increases. Therefore, in order to ensure the same high accuracy, the workpiece in the processing area of the laser cutting machine should be constant regardless of the width of the cut.

4. Texture. When cutting thick plates at high speed, molten metal will not appear in the incision below the vertical laser beam, but will spray out at the rear 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. Burr. The formation of burr is a very important factor that determines the quality of laser cutting. Because the removal of burr requires additional work, the severity and quantity of burr can directly determine the quality of cutting.

Nine standards for judging the cutting quality of laser cutting machine

6. Material deposition. Before the laser cutting machine starts to melt and pierce, it first touches a layer of special liquid containing oil on the surface of the workpiece. During the cutting process, due to gasification and various materials are not used, the customer blows the cut with wind, but the upward or downward discharge will also form deposits on the surface.

7. Depression and corrosion. Dents and corrosion have adverse effects on the surface of the cutting edge and affect the appearance. They appear in the cutting error that should be avoided in general.

8. Heat affected area. During 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 area refers to the depth of the area where the internal structure changes.

Nine standards for judging the cutting quality of laser cutting machine

9. Deformation. If the cutting causes sharp heating of the part, it will deform. This is particularly important in fine machining, because the contour and connecting piece here are usually only a few tenths of a millimeter wide. Control of laser power and use of short laser pulse can reduce the heating of parts and avoid deformation