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Views: 41 Author: Site Editor Publish Time: 10-30-2021 Origin: Site
With the development and application of laser technology, modern life has also undergone tremendous changes. Because of its high cutting efficiency and better cutting quality, laser cutting machines are increasingly used in various industries, especially metal processing and manufacturing industries. So, do you know how to judge the quality standard of laser cutting machine cutting metal? The summary analysis of Leapion laser is as follows:
In fact, there is still no unified international standard for the quality evaluation of laser cutting. So far, there is no standard for laser cutting quality in our country. The ISO9000 series quality assurance methods mainly provided by EU have conducted research on standards and standard sample regulations. The contents include: cutting quality grade division, setting samples and The standard of the processed sample, the optical system, the model of the price sample, and the beam characteristics, etc.
Because when the laser is cutting the plate at high temperature, the traces of the molten material will not appear in the cut below the vertical laser beam, but will be sprayed out at the rear of the laser beam. Such curved lines are formed on 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 the cutting process can greatly eliminate the formation of lines.
Generally speaking, the cutting width does not affect the cutting quality. The cutting width has an important effect only when a particularly precise contour is formed inside the part.
This is because the cutting width determines the minimum inner warp of the profile. When the thickness of the sheet increases, the cutting width also increases.
Therefore, in order to ensure the same high accuracy, no matter how large the width of the incision is, the processing area of the workpiece in the laser cutting machine should be constant.
When the thickness of the processed material exceeds 18mm, the verticality of the cutting edge is very important;
When away from the focus, the laser beam becomes divergent, and the cut becomes wider toward the top or bottom depending on the position of the focus.
The cutting edge deviates from the vertical line by a few hundredths of a millimeter. The more vertical the edge, the higher the cutting quality.
As a thermal cutting processing application equipment, a metal laser cutting machine is bound to cause thermal effects on metal materials during use. Its manifestations mainly include three aspects:
1) Heat affected zone:
The heat-affected zone refers to the area around the incision being heated during laser cutting. At the same time, the structure of the material itself changes. For example, some materials will harden. The heat-affected zone refers to the regional change in which the internal structure changes due to high temperature.
2) Depression and corrosion:
Concavity and corrosion have an adverse effect on the surface of the cutting edge and affect the appearance of the laser cutting machine. They appear in cutting errors that should generally be avoided; in the end, if the cutting causes the part to heat up sharply, it will deform.
3) Material deformation.
This is particularly important in fine machining, because the contours and connecting pieces here are usually only a few tenths of a millimeter wide. Controlling the laser power and using short laser pulses can reduce parts heating and avoid deformation.
Let me share so much today. If you want to know other information and questions about the laser cutting machine, welcome to consult Leapion Laser.
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