Influence of Machining with Lapping Foils on Surface Integrity of Hardened Steel

The Institute of Machine Tools and Production Technology established a machine concept, which uses foil tools instead of grinding wheels. Unused foil, determining the surface roughness, is continuously driven over a plate, defining the surface form. Thus, a very good flatness and a constant material removal rate can be ensured during the total process time. Furthermore, the machine concept allows investigating the influence of the grain protrusion on the surface property, since side effects such as grinding wheel wear are eliminated. The grain protrusion is influenced by cutting speed, grain size and pressure. Thus, the influence of cutting parameters subjected to grain protrusion on residual stress, micro hardness and texture are investigated and discussed.