Research on the Effect of Micro-pit Parameters on Tool Wear in Turning GH4169

Tools with microtextures have found wide application in cutting difficult machining materials. The cutting performance of tools is closely related to the arrangement, morphology, and size parameters of microtextures. In this research micro-pit tools were used in turning GH4169 in spray cooling. The effect of micro-pit parameters on tool wear was investigated through simulation and cutting experiment. In simulation, a model of cutting GH4169 in spray cooling was built to analyze the wear of micro-textured tools with different parameters, and the optimal combination of micro-pit parameters with excellent anti-wear performance was obtained. In cutting experiment, micro-pit textures with different parameters were fabricated by femtosecond laser, and cutting experiments were conducted in spray cooling to analyze the wear on the rake face of micro-textured tools. Furthermore, Ansys Fluent was used to simulate the dynamic pressure of oil film on the surface of micro-pits and the anti-wear mechanism of micro-textured tools was verified. This research provides technical reference for the design and development of micro-textured tools.