How to guarantee the cutting quality of laser cutting, the following are some Suggestions:
The cutting surface is smooth, with few lines and no brittle fracture
When the laser cuts the plate at high temperature, the trace of the molten material will not appear in the incision under the vertical laser beam, but will come out at the back of the laser beam.As a result, curved lines are formed at the edge of the cut, closely following 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 line formation of the lines.
Narrow slit width
Generally, the cutting width does not affect the cutting quality. Only when a particularly precise contour is formed inside the component, the cutting width has an important influence. This is because the cutting width determines the minimum inner meridian of the contour.So to ensure equal accuracy, no matter how wide the cut, the workpiece in the laser cutting machine processing area should be constant.
Good perpendicularity of the slit and small heat affected area
When the thickness of the processed material exceeds 18mm, the verticality of the cutting edge is very important.Away from the focus, the laser beam diverges and the cut widens towards the top or bottom, depending on where the focus is.The cutting edge deviates a few hundredths of a millimeter from the vertical line. The more vertical the edge, the higher the cutting quality.
Heat effect of cutting material
As a thermal cutting processing application equipment, it is bound to have a thermal impact on the material in the process of use, which is mainly reflected in three aspects: A. Heat-affected area;B. Depression and corrosion;C. Material deformation
The heat affected area refers to the area near the incision that is heated in laser cutting.At the same time, the structure of the material itself changes.For example, some materials will harden.Heat affected area refers to the regional change of internal structure caused by high temperature.
But the concave and the corrosion are to the cutting edge surface has the adverse influence, affects the laser cutting machine appearance.They appear in general should avoid cutting errors;Finally, if the cutting causes the component to heat up sharply, it will deform.