Low surface roughness and extremely high precision thanks to ELID grinding

Grinding through electrolytic in-process dressing (or ‘ELID’ for short) is an efficient technique for processing extremely hard and brittle materials such as ceramics (ZrO2, Si3N4), cermets and hardened steel. This grinding technique allows metal-bound grinding discs to be used, which are after all highly durable and difficult to adjust compared with discs with resins or glass. Moreover, ELID grinding allows a work piece with good geometrical accuracy in combination with a highly smooth surface to be obtained, making a polishing stage redundant.