Abstract
Stainless steel plates were drilled in high-speed machining to investigate the effect of tool life, surface roughness, tool wear and burr formation. Drilling was done using a TiN-coated carbide tool with curved cutting edges. The cutting speed V=75 m/min is optimum for minimum surface roughness and burr height. The surface roughness produced was less than 1 μm. Four distinct kinds of burr were observed, namely, burr without any attachment, burr with a drill cap, flange burr and burr with a sharp remnant. The chipping of the helical flutes and the outer corner wear were the main causes of drill failure.
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