Tool life enhancement through nano-composite coating on the residual stress controlled cutting faces
by K. Ramesh, Roger Heng, Jonathan Ho, Adrian Kang
International Journal of Manufacturing Technology and Management (IJMTM), Vol. 21, No. 1/2, 2010

Abstract: The high performance machining of steel has reached 150-1500 cm³/min of material removal rate at cutting speeds up to 8000 m/min and experiences: chipping, abrasion wear, adhesion and diffusion wear to last for 150-300 m of tool life. On the industrial front the tool life was counted on parameters: surface finish, burr, dimensional tolerance and work hardening. This situation further reduces the tool life to hover around 50-100 m of cutting distance for steel. Therefore a new multiple layer hard coating was developed to achieve: high adhesion strength, high thermal stability, high hardness, low friction coefficient and good compatibility. Field machining tests results suggest that the tool life was extended by 5-10 times than the conventional carbide tools.

Online publication date: Sat, 31-Jul-2010

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