Eight Dimensions To Judge The Cutting Quality Of Metal Laser Cutting Machine

The quality of metal laser cutting machine mainly depends on its cutting quality, which is the most direct method to test the quality of equipment. For new customers, when purchasing equipment, they will be asked to look at the proofing of the metal laser cutting machine first. In addition to the cutting speed of the equipment, the proofing also depends on the cutting quality of the sample. So how do you think about cutting quality and what aspects should you pay attention to? Here I will give you a detailed introduction.

How is the cutting quality of metal laser cutting machine? The following nine criteria are indispensable:
1. Roughness: the laser cutting part will form a vertical line. The depth of the line determines the roughness of the cut surface. The shallower the line, the smoother the cut. Roughness not only affects the appearance of the edge, but also affects the friction characteristics, in most cases, you want to minimize the roughness, the lighter the texture, the better the cutting quality.
2. Verticality: If the thickness of the sheet metal exceeds 10mm, the verticality of the cutting edge is very important. When out of focus, the laser beam will diverge and the cut will widen towards the top or bottom depending on the location of the focus. The cutting edge deviates from the vertical line by a few millimeters, and the more vertical the cutting edge, the higher the cutting quality.
3. Cutting width: Generally speaking, the width of the slit does not affect the cutting quality. It is only when a particularly precise profile is formed inside the part that the incision width has an important effect. This is because the width of the incision determines the minimum inner diameter of the incision. As the thickness of the board increases, the slit width also increases. Therefore, in order to ensure the same high precision, no matter how large the incision width, the workpiece should be constant in the processing area of the laser cutting machine.
4. Texture: When cutting thick plates at high speed, molten metal will not appear in the incision below the vertical laser beam, but spray out behind the laser beam. As a result, curves are formed on the cutting edge, and these curves closely follow the moving laser beam. To correct this problem, reducing the feed speed at the end of the cutting process can largely eliminate line formation.
5. Minor faults: The formation of burrs is a very important factor in determining the quality of laser cutting. Because the removal of burrs requires additional work, the severity and number of burrs can intuitively judge the quality of the cut.
6. Pitting and corrosion: Pitting and corrosion will adversely affect the surface of the cutting edge and affect the appearance. They occur in cutting errors that should normally be avoided.
7. Heat affected zone: In laser cutting, the area near the cutting is heated. At the same time, the structure of the metal changes. For example, some metals harden. A heat affected zone refers to the depth of an area where the internal structure has changed.
8. Deformation: If the cut causes the part to heat up sharply, it will deform. This is especially important in precision machining, where the contours and webs are often only a few tenths of a millimeter wide. The control of laser power and the use of shorter laser pulses can reduce the heat of parts and avoid deformation.