Cutting Performance of Cemented Carbide-Based Self-Lubricating Tool Embedded with CaF₂ Solid Lubricants

Abstract:

Four micro-holes were made using micro-EDM on the rake face of the cemented carbide (WC/TiC/Co) tools. CaF₂ solid lubricants were embedded into the microholes to form self-lubricating tool (SLT-1). Dry machining tests on hardened steel were carried out with the SLT-1 self-lubricating tool and conventional tool (SLT-2). The cutting forces, tool wear and friction coefficient were measured and compared. It was shown that the cutting performance of SLT-1 self-lubricating tool was greatly improved compared with that of the SLT-2 conventional tool. Through the analysis of cutting force theory and test results, the mechanism of cutting performance improvement was considered to be the formation of a self-lubricating film on the rake face which decreases the shear stress and the reduction of contact length between chip and tool.

• Periodical: Advanced Materials Research (Volumes 291-294)
• Pages: 3083-3087
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.291-294.3083
• Online since: July 2011
• Authors: Wen Long Song, Li Yin Zhang, Chang Zhong Xu, Xuan Qiu Li, Jian Feng Yan, Jian Xin Deng, Liang Zhang
• Keywords: CaF₂, Dry Machining, Friction and Wear Property, Self-Lubricating Tool

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