The measurement standard of laser cutting machine cutting effect

The laser cutting machine uses the laser beam emitted from the laser generator to focus into a high-power density laser beam irradiation condition through an external circuit system. The laser heat is absorbed by the workpiece material, and the temperature of the workpiece rises sharply. After reaching the boiling point, the material starts to vaporize And a hole is formed. As the relative position of the beam and the workpiece moves, the material will eventually form a slit. Generally speaking, the cutting effect of Changzhou laser cutting machine can be measured by the following standards:

1. Roughness

There are more or less lines left by the cutting edge, and the depth of the lines determines the roughness of the cutting surface. The shallower the texture, the lower the roughness and the smoother the surface. Generally speaking, the thinner the material thickness, the lower the cutting surface roughness; the lower the surface roughness of cutting with nitrogen or argon than the cutting with oxygen.

2, verticality

Because the cutting beam is focused and the beam has the characteristic of divergence, this leads to the inconsistency of the spot size at different depths in the thickness direction of the material when cutting (especially when cutting thick plates), resulting in the cutting surface and the plate The surface cannot reach 90° of ^, or the upper surface is wider or the lower surface is wider. Generally speaking, the thinner the material thickness, the better the perpendicularity; the better the beam quality, the better the perpendicularity. In addition, it is also related to the relative position of the spot focus and the thickness direction of the material in the specific processing.

3, glitch

The formation of burrs is a very important factor that determines the quality of laser cutting. Because the removal of burrs requires extra work, the severity and amount of burrs can intuitively judge the quality of the cutting.

4. Deformation

If the cutting causes the part to heat up sharply, it will deform. This is particularly important in fine processing, because the contours and connecting pieces here are usually only a few millimeters wide. Controlling the laser power and using short laser pulses can reduce parts heating and avoid deformation.

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