The effect of focusing on workpieces when laser cutting stainless steel

In the process of cutting stainless steel in the laser cutting machine, the focus position has a significant impact on the cutting effect. Focus is usually placed in the middle or bottom of the board. In this article, we will explore the relationship between the focus position and the cut surface, and analyze the effect of focus position on the section of stainless steel.

The effect of too high focus

If the focus position is too high, that is, too close to the upper surface of the board, the cut energy will not be fully reached to the bottom. This will lead to insufficient energy at the bottom, so that the light or slag cannot be discharged smoothly. In this case, the lower part of the cut surface will appear to tear, that is, it is not completely cut. If you see a tear -like line on the cutting workpiece, it is likely to be because the focus position is too high.

The influence of too low focus

On the contrary, if the focus position is too low, that is, too close to the bottom of the board or below the bottom, the energy of the upper part will be insufficient. This will lead to layering of the section. In severe cases, the upper part will appear tear, and the lines are not smooth. There is a feeling that there is no penetration. If the focus position is low, it may cause unpredictable, and the residue will pop up from the top.

Adjustment of focus position

The correct focus position should be between the upper and lower surfaces of the board, and the specific location needs to be judged according to the actual cut sample. The preliminary judgment method is: if the cutting surface is torn, it may need to reduce the focus position; if the layered phenomenon occurs, the focus position may need to be improved.

Focusing is also very important. From too high to moderate, you can see that the tearing shape at the bottom is gradually reduced until there is basically no residue. However, if the focus continues to decrease, tear stripes will appear in the middle of the cut surface. If the focus is too low, the section will show a tear shape, and a layered phenomenon will occur. The focus of the fiber laser cutting machine has a significant effect on the cutting effect. The correct choice and adjustment position can greatly improve the quality and efficiency of cutting.