Because the superalloy is a material with high hardness and high temperature resistance, it is difficult to ensure the cutting accuracy when cutting with optical fiber laser cutting machine.Compared with ordinary steel, what are the difficulties in processing superalloy with optical fiber laser cutting machine?

Poor thermal conductivity of superalloy: when cutting superalloy, the oxidation end has a lot of heat, cutting end bears up to 600-800℃ high temperature cutting.Under the action of high temperature and laser cutting, the cutting end will deform and become sticky.Junction and diffusion wear, affect the workpiece processing quality;Processed surfaces tend to harden: For example, GH4169 superalloys have a base hardness of about HRC37 before the hardening process, while the surface of a fiber optic laser cutter produces a hardening layer of about 0.03mm.The hardness increases to about HRC47 and the hardness increases to 27.%. The surface hardening caused by processing has a significant impact on the life of the oxidizing end, usually resulting in severe boundary wear.

High cutting force required: the strength of superalloys is more than 30% higher than commonly used alloy steel materials.In high temperature cutting above 600℃, the strength of nickel-based superalloys is still higher than that of ordinary alloy steel and unreinforced superalloys.It is difficult for optical fiber laser cutting machine to cut high temperature alloy when the unit cutting force is above, and it is also a technical problem to be solved urgently.I believe this problem will be effectively solved in the near future and promote the development of the whole laser cutting machine industry.