Machining of Magnesium Workpieces

Cutting tools coated with polycrystalline diamond (DP) show a superior behavior in dry machining of magnesium alloys compared to uncoated or TiN-coated cermented carbide tools. With their usage one can best avoid adhesion between cutting tool and workpiece material as well as material build-up. Chip temperature and thus the danger of chip ignition can be reduced due to low machining forces when using DP tools. They are also preferred for machining magnesium-based MMCs.