Wear comparison of PCBN tool for dry and wet cutting of hardened steel

Abstract In this paper, the tool life, wear pattern and wear mechanism of four PCBN tools during dry and wet cutting of hardened steel under certain cutting parameters are studied. Scanning electron microscopy was used to observe the shape of the tool tip and the amount of flank wear of the tool under different cutting strokes, and the energy spectrum analysis of the tool front and back. The results show that the wear of the flank face during wet cutting is less than that of dry cutting, which indicates that the wet cutting of the tool has better performance than the dry cutting. The wear form of the PCBN tool has the wear of the rake face and the wear of the flank face, among which the rake face The wear form is the crater wear, the wear mechanism is mechanical wear, oxidative wear and adhesive wear, while the flank wear mechanism is mechanical wear, oxidative wear, adhesive wear and diffusion wear; also found that CBN content decreases, the tool The amount of flank wear also has a downward trend, that is, the cutting life of the tool has a tendency to prolong. (Diamond and Abrasives Engineering, 2009, Issue 3)

Abstract The lifespan, wear form and wear mechanism of four kinds of PCBN cutting tools were studied through dry cutting and wet cutting of quenched steel (45CrNiMov) under given cutting parameters. The mor-phology and flank wear of PCBN tip in different cutting stroke were observed via SEM and analyzed by EDS. The results show that the wear of flank face in wet cutting is less serious than the case in dry cutting, which means that the cutting tools have better performance when used in wet cutting. The wear forms of PCBN cutting tools include rake wear and flank wear. The rake wear is presented as crater wear and its wear mechanisms are abrasive, oxidation and adhesion, while the wear mechanisms of flank wear are abrasive. Oxidation Adhesion and diffusion. And also, we know that the wear amount of rear face decreases, i. e., the lifespan of cutting tools become longer with lower CBN content.

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