Abstract
Four micro-holes were made using micro-EDM on rake face of the cemented carbide (WC/TiC/Co) tools. MoS2, CaF2, and graphite solid lubricants were respectively embedded into the four micro-holes to form self-lubricated tools (SLT-1, SLT-2, and SLT-3). Dry machining tests on hardened steel were carried out with these self-lubricated tools and conventional tools (SLT-4). The cutting forces, average friction coefficient between tool and chip, and tool wear were measured and compared. It was shown that the cutting forces and tool wear of self-lubricated tools were clearly reduced compared with those of the SLT-4 conventional tool. The SLT-1 self-lubricated tool embedded with MoS2 just exhibited lower friction coefficient between tool and chip in cutting speed of less than 100 m/min; the SLT-2 self-lubricated tool embedded with CaF2 possessed lower friction coefficient in cutting speed of more than 100 m/min; and the SLT-3 self-lubricated tool embedded with graphite accomplished good lubricating behaviors steadily under the test conditions. It is indicated that cemented carbide inserts with four micro-holes on rake face embedded with appropriate solid lubricants on rake face is an effective way to reduce cutting forces and rake wear.
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Wenlong, S., Jianxin, D., Ze, W. et al. Cutting performance of cemented-carbides-based self-lubricated tool embedded with different solid lubricants. Int J Adv Manuf Technol 52, 477–485 (2011). https://doi.org/10.1007/s00170-010-2740-1
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DOI: https://doi.org/10.1007/s00170-010-2740-1