With the development of science and technology, laser technology has been applied to all walks of life. As a precision processing method, laser cutting can cut almost all materials, including two-dimensional or three-dimensional cutting of thin metal plates. Laser cutting machine is a technological revolution in sheet metal processing, and is the “processing center” in sheet metal processing.
Laser generates light by material excitation. This light band has a strong temperature. When contacting materials, it can quickly melt on the surface of materials to form a hole. According to the movement of the point to point, it forms a cutting. Therefore, compared with traditional cutting methods, such a cutting method has small gaps and fast cutting speed.
The cutting quality and effect of the laser cutting machine are very good, but there are many factors that will affect the cutting quality of the laser cutting machine. What are the factors that affect the cutting quality of the laser cutting machine?
Analysis of factors affecting the cutting quality of laser cutter:
1. Cutting width and perpendicularity affecting cutting quality of laser cutting machine
The width of the cut usually does not affect the cutting quality. The cutting width plays an important role only when a particularly accurate contour is formed inside the part. This is because the cutting width determines the contour. As the thickness of the sheet increases, the cutting width also increases. If the thickness of the metal plate exceeds 10mm, the perpendicularity of the cutting edge is very important. When away from the focus, the laser beam becomes divergent. According to the location of the focus, the incision becomes wider toward the top or bottom, the edge is vertical, and the cutting quality is high.
2. Roughness and texture affecting the cutting quality of laser cutting machine
The laser cutting part will form a vertical texture, and the depth of particles determines the roughness of the cutting surface; The particles are shallow and the cut part is smooth. In most cases, the roughness must be reduced as much as possible, so the texture is light and the cutting quality is high. When cutting slabs at high speed, molten metal will not appear in the slit below the vertical laser beam, but will be sprayed after the laser beam deflects. As a result, a curve is formed at the cutting edge, and the line closely follows the moving laser beam. To solve this problem, the feed speed is reduced at the end of the cutting process.
3. Material deposition, burr and deformation affecting the cutting quality of laser cutting machine
In the cutting process, the surface of the slit can be deposited, and the amount of deposited material can also see the quality of the laser cutting equipment. The formation of burr determines a very important factor of laser cutting quality, because deburring requires additional work, so the severity and quantity of burr can directly determine the cutting quality. If the cutting causes the parts to rise rapidly, deformation will occur, so the deformation is small and the cutting quality is good.
