In order to investigate the performance of PCBN milling cutter blades for milling ductile iron,milling tests are conducted on ferritic ductile iron(QT450-10)with ceramic bonded PCBN milling cutter blades(T-PCBN)and metal bonded PCBN milling cutter blades(J-PCBN),where the milling force,vibration,wear mechanism and service life of the two milling cutter blades are comparatively studied.The results demonstrate that the milling force and vibration of T-PCBN blades are inferior to those of J-PCBN milling cutter blades on the basis of the identical cutting parameters,whereas both blades are subject to adhensive,diffusion,oxidation and abrasive wear.Meanwhile,the primary form of failure for T-PCBN milling cutter blades is breakage of cutting edge,while the failure form for J-PCBN milling cutter blades is wear until the standard of dullness is reached.Furthermore,the service life of J-PCBN milling cutter blades is much superior to that of T-PCBN milling cutter blades.
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