Many people don't know much about the method of cutting stainless steel and carbon steel by fiber laser cutting machine. The technicians of Magick Laser will introduce the method of cutting stainless steel and carbon steel by fiber laser cutting machine for everyone to learn.
The fiber laser cutting machine needs to add auxiliary gas. The purity and pressure of the auxiliary gas directly affect the quality of the section of the cut sheet. If the oxygen purity used for cutting is above 99.6%, the higher the purity of the oxygen used for cutting, the rougher the section of the galvanized sheet. The higher the degree and quality, the higher the cutting cost of course, but the galvanized sheet cut with oxygen will have black edges. If the nitrogen purity should be above 99.5% during cutting, improving the nitrogen purity can ensure that the galvanized sheet is cut The slit does not change color during the process.
The solution for edge burning in stainless steel cutting by fiber laser cutting machine: in the processing of such materials, the auxiliary gas used is nitrogen, and edge burning will not occur during cutting. However, due to the high temperature of the material inside the small hole If it is high, the phenomenon of slag hanging on the inner side will be more frequent.
The effective solution is to increase the pressure of the auxiliary gas and set the conditions to high peak output, low frequency pulse conditions. When the auxiliary gas uses air, it is the same as when using nitrogen. Overburning will not occur, but it is easy to form slag at the bottom. The conditions need to be set to high auxiliary gas pressure, high peak output, and low frequency pulse conditions.
Solution to overburning when metal laser cutting machine processes carbon steel: In carbon steel cutting with oxygen as auxiliary gas, the key to solving the problem is how to suppress the generation of oxidation reaction heat. The method of auxiliary oxygen during perforation and switching to auxiliary air or nitrogen can be used for cutting. This method can process small holes of 1/6 thick plate.
Pulse cutting conditions with low frequency and high peak output power have the characteristics of reducing heat output, which helps to optimize cutting conditions. Setting the conditions as a single pulse laser beam, high peak output with high energy intensity, and low frequency conditions can effectively reduce the accumulation of molten metal on the surface of the material during the perforation process and effectively suppress the heat output.