Study on machining characteristics with variable distribution density micro-texture tools in turning superalloy GH4202

Abstract

Micro texture tools (MTTs) with variable distribution density were proposed, and the novel MTTs can adapt to different friction states in the tool chip contact area and maintain good anti-friction and wear resistance. The novel MTTs were composed of two regions with different groove width and distribution density which were prepared on the rake face by femtosecond laser technology. The cutting processes were carried out in turning superalloy GH4202. According to the machining characteristics (rake wear, tool wear volume, workpiece material adhesion volume, and the chip morphology), the role of variable distribution density in turning was analyzed. The experimental results showed that the texture parameters of the texture region near and away from the edge have different effects and mechanisms on the machining characteristics. Compared with a non-textured tool and uniform textured tool, the proper design of texture parameters of variable distribution density texture can make the MTTs have better wear resistance and chip breaking ability when turning superalloy GH4202.