Abstract
Planing of cobalt-free tungsten carbide using a mono-crystal-diamond tool under the lubrication oil, Extreme pressure agent, Dimethyl silicon, Oleic acid, ZnDTP and Water-miscible cutting fluid are examined. All of the lubrication oils were effective to reduce the diamond tool wear. Large chipping on the diamond tool was observed under water-miscible cutting fluid. Diamond tool wear and surface roughness under ZnDTP is the smallest due to excellent lubricant property and shout out oxygen in atmosphere. The achieved surface roughness using ZnDTP was 0.022 micronRa.
