The quality of light cutting machine mainly depends on its cutting quality, which is a direct way to check the quality of equipment. For new customers, when purchasing equipment, they will first look at the laser cutting machine for proofing. In addition to the cutting speed of the equipment, the proofing should also look at the cutting quality of the sample. How do you look at the cutting quality, and what aspects should you pay attention to?

1. Smooth cutting, no stripe, no brittle fracture;

When metal laser cutting machine is used to cut thick plates at high speed, molten metal will not appear in the incision below the vertical laser beam, but will be sprayed out at the back of the laser beam. As a result, bent 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.

2. The slit width is narrow, which is mainly related to the laser beam spot diameter;

Generally speaking, the cutting width of metal laser cutting machine does not affect the cutting quality. Only when a particularly precise contour is formed inside the part, the cutting width has an important impact. This is because the cutting width determines the small internal diameter of the contour. When the thickness of the plate increases, the cutting width also increases. Therefore, in order to ensure the same high accuracy, no matter how wide the incision is, the workpiece in the processing area of the laser cutting machine should be constant.

3. Good perpendicularity of cutting seam and small heat affected zone;

Generally, metal laser cutting machines are mainly used for processing materials below 5MM, and the perpendicularity of their sections may not be the main evaluation factor, but for high-power laser cutting, when the thickness of the processed materials exceeds 10mm, the perpendicularity of the cutting edges is very important. When away from the focus, the laser beam becomes divergent, and the cutting becomes wider toward the top or bottom according to the location of the focus. The cutting edge deviates from the vertical line by several millimeters. The more vertical the edge is, the higher the cutting quality is.

4. No material burning, no melting layer formation, no large slag;

Slag hanging on metal laser numerical control cutting machine is mainly reflected in deposition and section burr, among which material deposition is due to a layer of special oily liquid on the workpiece surface before laser cutting starts melting and piercing. Gasification and various materials do not need customers to blow away the cut with wind, but upward or downward discharge will also form deposits on the surface. 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 amount of burr can directly judge the quality of cutting.

5. 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 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 lines, the higher the cutting quality.

6. Material deposition

Before the laser cutting machine starts to melt and perforate, it first touches a layer of special oily liquid 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. Depressions and corrosion

The depression and corrosion have adverse effects on the surface of the cutting edge and affect the appearance. They appear in cutting errors that should normally be avoided.

8. Deformation

If cutting causes sharp heating of the part, it will deform. This is particularly important in fine machining because the profile and connecting piece here are usually only a few tenths of a millimeter wide. Controlling the laser power and using short laser pulses can reduce the heating of components and avoid deformation.

Cutting quality is an important index to reflect the quality of laser cutting machine. For new customers, they generally require on-site proofing when purchasing equipment. In addition to the cutting speed of equipment, proofing also depends on the cutting quality of samples.