Abstract
This research deals with the hard turning of cemented carbide with CBN and diamond tools and focused ontool performance, mainly tool wear, taking into account cutting temperature and cutting force. Five types of tool materials: SC, two PCDs, BL-PCD and CBN: are selected for cutting three grades of cemented carbide (WC), differentiated by the Co binder content (12%, 20% and 25%). Attrition has been found to be the main tool wear mechanism for all tools with slight adhesion of the workpiece binder on the tool face. Cutting temperature is influenced by thermal conductivity of the tool as well as cutting force and tool wear.
