The Phonomenon of Material Side Flow During Finish Turning of EN X153CrMoV12 Hardened Steel with Tools Based on Polycrystalline Cubic Boron Nitride

The study presents the results of an analysis of the phenomenon of material side flow during finish turning of EN X153CrMoV12 (H12MF GOST 5950-2000) tool steel hardened to 63 ± 2 HRC with cutting tools made of polycrystalline composites based on polycrystalline cubic boron nitride. For an uncoated wedges of CBN 7025 the material side flow occurred for the entire range of tested cutting feed. For a CBN 8120 wedges with a TiA1N coating the side flow was observed exclusively for the cutting feed of f= 0.2 mm/rev. The researched phenomenon did not occur on the surfaces finished with a CBN 7015 tool coated with TiN.