Change in Dimensions and Surface Roughness of 42CrMo4 Steel after Nitridation in Plasma and Gas

The influence of plasma nitriding and gas processes on the change surface roughness dimensional accuracy 42CrMo4 steel was investigated in this paper. Both almost always led to changes texture. After nitriding, clusters nitride ions were formed steel, while very often new creation a formation “plate-like” In both cases these processes, compound layer specific thickness formed, although parameters chosen with aim suppressing it. optimizing during it found that there no evaluated using Ra parameter. However, turned out when multi-parameter evaluation (the Rz, Rsk Rku used), presented some due which affect functional behavior components. Roughness also detected by evaluating profiles, where peak heights valley depths. Nitriding further dimensions form an increase 0.032 mm average. magnitude has context chemical composition material. A larger nitriding. degree IT is closely related dimension. For one compared ground part (from IT8 IT9). On basis achieved results, coefficient created, can be used predict surfaces after degrees IT3–IT10. study, tool for predicting parts presented.