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How to judge the quality of cut sample [durmark laser]

Anhui Lifu Machinery Technology Co., Ltd
Judging the cutting quality of laser cutting machine is the best way to judge the performance of laser cutting equipment intuitively. Here are nine criteria for judging.
 
 
 
1. Roughness. 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 the edge, but also affects the friction characteristics. In most cases, it is necessary to reduce the roughness as much as possible, so the shallower the grain, the higher the cutting quality.
 
 
2. Perpendicularity. How the thickness of sheet metal exceeds 10 mm, the perpendicularity of cutting edge is very important. Away from the focus, the laser beam becomes divergent, and the cutting is widened toward the top or bottom according to the position of the focus. The more vertical the edge is, the higher the cutting quality is.
 
 
3. Cutting width. Generally speaking, the cutting width does not affect the cutting quality. Only when a particularly precise contour is formed inside the part, the cutting width has an important influence. This is because the cutting width determines the minimum internal diameter of the contour. When the thickness of the plate increases, the cutting width also increases. Therefore, to ensure the same high precision, no matter how wide the incision, the workpiece should be constant in the processing area of the laser cutting machine.
4. Lines. When cutting thick plates at high speed, the molten metal will not appear in the incision under the vertical laser beam, but will spray out at the back of the laser beam. As a result, the curved lines are formed at the cutting edge, and the lines closely follow the moving laser beam. In order to correct this problem, reducing the feed rate at the end of cutting can greatly eliminate the lines of lines.
 
 
5. Burr. The formation of burr determines the quality of laser cutting a very important factor, because the removal of burr requires extra work, so the severity and the amount of burr can directly determine the quality of cutting.
 
6. Material deposition. Before the laser cutting machine starts to melt and pierce, it first touches a layer of special liquid containing oil on the surface of the workpiece. In the cutting process, due to gasification and various materials are not used, customers use wind to blow away the cut, but the upward or downward discharge will also form deposition on the surface.
 
 
 
7. Dents and corrosion. Dents and corrosion have an adverse effect on the surface of the cutting edge, affecting the appearance. They appear in cutting errors that should normally be avoided.
 
 
 
8. Heat affected area. In laser cutting, it is heated along the area near the incision. At the same time, the metal structure changes. For example, some metals can harden. The heat affected area refers to the depth of the area where the internal structure changes.
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