Safe Machining of Magnesium with CVD-DP and Smooth CVD-DP Coated Tools

In recent years, an upcoming interest of the automotive industry can be noticed in the use of light metals as construction materials. Magnesium as one of the lightest metals for mass production of automotive components offers a great potential for weight reduction. Still, for a safe and economic machining of magnesium parts there are some problems to solve. Especially in dry machining and at high cutting speeds, adhesion between tool and workpiece material leads to build-up edges. Experiments show, that tools, which are polycrystalline diamond coated (DP) by chemical vapor deposition (CVD), have a superior cutting performance. Excellent results regarding the workpiece surface roughness can be achieved when using new smooth CVD-DP coated tools. Authors: B. Denkena (University of Hannover, Hannover, Germany), H. K. Tonshoff (University of Hannover, Hannover, Germany), T. Friemuth (University of Hannover, Hannover, Germany), C. Gey (University of Hannover, Hannover, Germany), C. Podolsky (University of Hannover, Hannover, Germany), W. Frank (CemeCon AG, Wurselen, Germany).