Why does the metal laser cutting machine produce slope when processing the seam of thick metal plate?

Metal laser cutting machine often has various problems in the process of daily processing. Sometimes some problems are daily faults, and some are operation problems. Do you know the reason why the metal laser cutting machine produces slope when processing the seam of thick metal plate?

In the process of metal laser cutting machine machining thick metal plates, with the increase of workpiece thickness, the lower the machining accuracy of metal laser cutting machine, the larger the cutting seam, and the lower the perpendicularity of cutting seam, showing a slope. The cutting slope of metal laser cutting machine is mainly affected by two aspects: the focal length and focus position of the processing lens. The slit width will change due to the focusing characteristics of the laser beam on the machined material surface and the setting accuracy of the focus.

The focus position is the distance from the laser focus to the workpiece surface, which directly affects the section roughness, the slope and width of the slit and the adhesion of the molten residue. Up is positive (+) and down is negative (one). When the focus position is set on the machined material surface (z=0), the upper slit width and slope are the minimum; When the focus position moves up or down, the slope will expand. When the focus position deviates from the material surface, the beam diameter irradiating the material surface will expand, the melting range will correspondingly increase, and the slope will therefore increase.

The above is the reason why the metal laser cutting machine produces slope when processing the seam of thick metal plate. In our daily processing, if we encounter such a situation, we can try according to the above, and it can be solved in most cases.

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