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- Title
Cutting performance and antifriction mechanism of Al<sub>2</sub>O<sub>3</sub>/TiC/TiB<sub>2</sub>/h-BN@Al<sub>2</sub>O<sub>3</sub> self-lubricating ceramic tool.
- Authors
Shi, Yuxin; Chen, Zhaoqiang; Ji, Lianggang; Xiao, Guangchun; Yi, Mingdong; Zhang, Jingjie; Chen, Hui; Xu, Chonghai
- Abstract
The machinability and wear reduction mechanism of self-repairing and self-lubricating ceramic tools sintered by vacuum hot-pressing method in the dry turning of 40Cr hardened steel was studied. By comparing the cutting performance and wear morphology of AT (Al2O3/TiC) ceramic tools under different cutting parameters, it was found that AT10B@5 (Al2O3/TiC/10 vol% TiB2/5 vol% h-BN@Al2O3) tool has a longer service life and better machining quality. Owing to the precipitation of solid lubricant during the cutting of AT10B@5 ceramic tool, the friction force during the cutting is reduced, thus decreasing the cutting force and cutting temperature of AT10B@5 ceramic tool during the cutting. The main cutting force decreased by 20.8%; the cutting temperature decreased by 22.2%; and the friction coefficient of front tool face decreased by 11.6% compared with AT tool. This effectively improved the surface quality of working parts, reduced the tool wear, increased the processing quality of work piece, and prolonged the tool life.
- Subjects
CUTTING force; SOLID lubricants; CERAMICS; SERVICE life; LONGEVITY; LUBRICATION &; lubricants
- Publication
International Journal of Advanced Manufacturing Technology, 2023, Vol 125, Issue 1/2, p809
- ISSN
0268-3768
- Publication type
Article
- DOI
10.1007/s00170-022-10734-x