Fiber Laser Cutting Machine Manufacturers have been committed to the application of laser equipment in various industries to provide customers with the most suitable and complete industry solutions. The following are nine criteria for testing the cutting quality of fiber laser cutting machines, which we hope will be helpful to you.
Roughness
After cutting, the fiber laser cutter creates vertical lines on the cross section. The depth of the line determines the roughness of the cut surface. The shallower the line, the smoother the cut section will be. Roughness not only affects the appearance of the edge, but also the friction characteristics. In most cases, it is necessary to minimize the roughness, so the shallower the grain, the higher the quality of the cut.
Perpendicularity
If the sheet metal is thicker than 10 mm, the perpendicularity of the cutting edge is very important. When moving away from the focal point, the laser beam will diverge and the cut will widen towards the top or bottom, depending on the position of the focal point. The cutting edge deviates from the vertical line by a few hundredths of a millimeter. The more vertical the edge, the higher the quality of the cut.
Laser Cutting Machine
Cut Width
In general, the cutting width does not affect the laser cutting quality. It is only when particularly precise contours are formed inside the part that the cutting width has an important effect. This is because the cutting width determines the minimum internal warpage of the contour. As the thickness of the sheet increases, the cutting width also changes. The increase in the Therefore, in order to guarantee the same high level of accuracy, the workpiece in the processing area of the laser cutting machine should be constant, regardless of the cutting width.
Texture
When cutting thick plates at high speed, the molten metal does not appear at the kerf below the vertical laser beam, but is ejected behind the laser beam. As a result, curved lines form at the cutting edges and these lines follow the moving laser beam closely. To correct this problem, reducing the feed rate at the end of the cutting process can greatly eliminate the formation of lines.
Burrs
Burr formation is a very important factor in determining the quality of laser cutting. Because of the extra work required to remove burrs, the severity and number of burrs can be a visual indicator of the quality of the cut.
Material deposition
Laser Cutting Machine apply a special oily liquid to the surface of the workpiece before melting and punching. During the cutting process, the customer uses wind to remove the kerf due to vaporization and the non-use of various materials, but upward or downward emissions can also form deposits on the surface.
Denting and corrosion
Dents and corrosion have an adverse effect on the surface of the cut and affect the appearance. They occur in cutting errors and should generally be avoided.
Heat affected zone
In laser cutting, the area around the kerf is heated. At the same time, the structure of the metal changes. For example, some metals harden. The heat-affected zone refers to the depth of the area where the internal structure is changed.
Deformation
If a part is heated sharply while cutting, it will deform. This is especially important in fine machining, where contours and joints are often only a few tenths of a millimeter wide. Controlling the laser power and using short laser pulses can reduce the heating of the part and avoid distortion.
We also have Laser Welding Machines available, please feel free to contact us if you need them
