The cutting quality of the
fiber laser cutting machine is very important, because it can intuitively judge the performance of the fiber cutting equipment. For metal manufacturers, a high-quality fiber laser cutting machine can improve the productivity of the workshop. Good metal workpieces do not require secondary processing and can also reduce labor costs. So how to judge the cutting quality of metal? This article will show you the following judgment criteria.
Roughness of metal edge
The metal laser cutting machine is a high-quality and high-efficiency processing tool. When the laser beam acts on the metal plate, vertical lines are formed. The deeper the grain, the rougher the surface of the section. Roughness not only affects the appearance of the edges, but also the friction characteristics. In most cases, the lower the roughness, the higher the cut quality.
Dross
Dross is the re-solidified oxidized molten metal that is not fully ejected from the kerf during cutting. It may form as a thick bubbly accumulation along the bottom edge of the plate.
During the machining of the metal laser cutting machine, the high energy generated by the laser beam causes the surface of the workpiece to rapidly vaporize and evaporate, and the slag on the surface of the workpiece is blown off by the auxiliary gas. If the auxiliary gas is not used, the slag is cooled and the dross is built up on the cutting surface. Since the removal of the dross requires an extra workload, the quality of the cut can be visually judged by observing the severity and amount of the dross.
Perpendicularity
For high-power
metal laser cutting machine, when the thickness of the processed material exceeds 10 mm, the perpendicularity of the cutting edge is very important. The laser beam becomes divergent when it is away from the focus, and the cut becomes wider toward the top or bottom depending on the position of the focus. The more vertical the edge, the higher the cutting quality. A cut with little or no angle is considered the best.
Cutting Width
The width of the fiber laser cut generally does not affect the quality of the cut, but the cut width has an important effect when forming a very precise contour inside the part. This is because the kerf determines the minimum inner diameter of the contour. And as the thickness of the sheet increases, the cut width also increasing. Therefore, in order to ensure the same high precision, regardless of the width of the slit, the machining area of the workpiece should be constant.
Deformation
If the fiber laser cutting machine heats up the workpiece sharply in the process of cutting metal, the part will be heated and deformed. This is especially important in fine machining because the contours and tabs here are usually only a few tenths of a millimeter wide. Controlling fiber laser power and using short laser pulses can reduce component heating and avoid distortion.
Cut corner overburning
Whether the particularly thin corners are accurate during the cutting process and whether the overburning phenomenon is serious can also judge the quality of the laser metal cutting machine.
Heat Affected Zone
The heat-affected zone refers to the depth of the area where the internal structure changes. In laser cutting, the area near the slit is heated, meanwhile, the structure of the metal changes. For example, some metals may harden.
If you know less about laser cutting machines, the process of buying
metal cutting equipment is hesitant. Because the investment of fiber metal cutting machines is often relatively high, metal manufacturers should know from which processing results to judge the quality of the machine. If you have other questions in the process of purchasing metal cutting equipment, you can communicate with us online. ACCTEK is happy to help you.
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