Induction technology makes use of a particular property of ceramic materials. As a rule, ceramics are not electrically conductive and are non-magnetic. An induction field therefore has no effect on ceramic components and thus also does not cause any heating. This allows the effect of the energy to be controlled with precision. Avoiding unnecessary heating permits cost savings and reduces the thermal stresses on the equipment / tools.
Silicon nitride, which is wear-resistant, electrically insulating and non-magnetic, is used in many applications. In addition, silicon nitride is characterised by a very good resistance to temperature change. Depending on the application in question, aluminium oxide and zirconium oxide are also highly suitable.
Sliding shoe/sliding block: Ceramic sliding blocks are frequently used in induction hardening plants. In hardening plants for crankshafts for example, the components which are to be hardened run on the surface of the ceramics. Since silicon nitride retains its strength and resistance to wear even at very high temperatures, it is outstandingly suitable for this application.