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Laser cutting machine laser cutting quality decision principle

by:Transon     2020-10-28
For laser cutting machine laser cutting processing, evaluate its processing quality mainly includes the following several principles:
1, cutting smooth, no stripes, not brittle fracture;
when high-speed cutting plate metal laser cutting machine, molten metal will not appear in the laser beam at the bottom of the vertical incision, may in the laser beam after partial. As a result, the curved lines formed in the cutting edge, texture closely to follow a moving laser beam, in order to fix this problem, at the end of cutting processing to reduce the feed rate, can greatly eliminate grain line.
2, narrow kerf width, this is mainly related to the laser beam spot diameter size;
metal laser cutting machine cut width in general will not affect the cutting quality, only the outline of special precision is formed within the parts, the cutting width is important, because the cutting width determines the contour of the small Canon, when the sheet thickness increases, the cutting width also will increase. So want to ensure that the same precision, no matter how hard it is incision width, artifacts in processing areas of the laser cutting machine should be constant.
3, the perpendicularity of the kerf width is good, small heat affected zone.
usually, metal laser cutting machine mainly focus on the 5 mm following materials processing, the cross section vertical degree may not be as the main evaluation factors, but for high-power laser cutting, when processing the thickness of the material for more than 10 mm, the cutting edge of vertical degree is very important. Away from the focus, the laser beam divergence, according to the location of the focus, cutting towards wider at the top or bottom. Cutting edge what percentage deviation from vertical line mm, margin is vertical, the higher the cutting quality.
4, there is no material burning, not melt layer to form, no big slag;
of hang slag metal CNC laser cutting machine mainly embodied in the sedimentary and burr, reduction of material deposition for laser cutting before start piercing in workpiece surface with a layer of special liquid oil. Gasification and all kinds of materials in the wind except incision without customers, but the upward or downward discharge will be formed in the surface deposition. And the formation of burr when determining the quality of laser cutting is a very important factor, because of the burr removal need extra workload, so the burr can serious and how much is the intuitive judgment of the quality of the cutting.
5, rough surface plating of incision, the size of the surface roughness is the key to measure laser cutting surface quality.
actually for metal laser cutting machine, cutting section lines and roughness of a direct link directly, often cross section lines of poor cutting performance also directly leads to roughness is higher, but considering the two kinds of different effects on the formation of different, generally we analyze metal
CNC laser cutting machine processing quality, still is to separate for analysis. Laser cutting section will form the vertical grain, grain depth determines the cutting surface roughness, the lighter the grain, the cutting section is more smooth. Roughness is not only affect the appearance of the edge, but also affect the friction characteristics, in most cases, the need to reduce the roughness as far as possible, so the more shallow, grain, the higher the cutting quality.
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