The fiber laser cutting machine generates a large amount of heat during processing, causing the cut of the workpiece to burn, which is called edge burning. How to solve the problem of edge burning during fiber laser cutting machine processing?

1. The solution to the problem of over burning during the cutting of small holes in carbon steel by fiber laser cutting machine: In carbon steel cutting with oxygen as auxiliary gas, the key to solving the problem lies in how to prevent the generation of oxidation reaction heat. The method of assisting oxygen during perforation and switching to auxiliary air or nitrogen for cutting can be used. This method can process small holes in 1/6 thick plates. The pulse cutting conditions with low frequency and high peak output power have the characteristic of reducing heat output, which helps to optimize the cutting conditions. Setting the conditions to a single pulse laser beam, high peak energy output, and low frequency conditions can reduce the accumulation of molten metal on the material surface during the perforation process and reduce heat output.

2. The solution of fiber laser cutting machine in aluminum alloy and stainless steel cutting: In the processing of such materials, the auxiliary gas used is nitrogen, which will not cause edge burning during cutting. However, due to the high temperature of the material inside the small hole, the phenomenon of slag hanging on the inside will be more frequent. The solution is to increase the pressure of the auxiliary gas and set the conditions to high peak output and low frequency pulse conditions. When using air as an auxiliary gas, just like when using nitrogen, it will not overheat, but it is easy to have slag hanging at the bottom. The conditions need to be set to high auxiliary gas pressure, high peak output, and low-frequency pulse conditions.