How to solve the problem of burning edge of fiber laser cutting machine?
1. The solution of over-burning when the fiber laser cutting machine cuts the small holes of carbon steel: In carbon steel cutting with oxygen as auxiliary gas, the key to solving the problem is how to prevent the generation of oxidation reaction heat. Auxiliary oxygen during perforation can be used to switch from lag to auxiliary air or nitrogen for cutting. This method can process small holes of 1/6 thick plate. The pulse cutting conditions with low frequency and high peak output power have the characteristics of reducing heat output, which is helpful for the optimization of cutting conditions. Setting the conditions to a single pulse laser beam, high peak output with high energy intensity, and low frequency conditions can reduce the accumulation of molten metal on the surface of the material during the piercing process and reduce the heat output.
2. The solution of the fiber laser cutting machine in the cutting of aluminum alloy and stainless steel: in the processing of such materials, the auxiliary gas used is nitrogen, and the scorching will not occur during cutting. However, due to the temperature of the material inside the small hole Very high, the slag hanging phenomenon 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. The auxiliary gas uses air as well as nitrogen, so overburn does not occur, but it is easy to have slag on the bottom. The conditions need to be set to high auxiliary gas pressure, high peak output, and low frequency pulse conditions.