Grind-hardening is a hybrid process that combines material removal and surface hardening of a steel workpiece at the same time. The heat dissipated in the cutting area is used for the heat treatment of the workpiece (Salonitis 2015a). For the grind-hardening of a workpiece, the generated heat in the interface between the grinding wheel and the workpiece material and the subsequent cooling of the material need to be controlled. The metallurgic change required for hardening thus is achieved in two steps: firstly, heating the workpiece surface above the austenitization temperature, and secondly afterwards rapidly cooling (quenching) the material for inducing martensitic transformation in the workpiece surface.
- ENGY (2005) Development of low energy and eco-efficient grinding technologies, EU FP5 Funded project G1RD-CT-2002-00735. Accessible at: http://cordis.europa.eu/project/rcn/62807_en.html