Improving the efficiency of surface-thermal hardening of machine parts in conditions of combination of processing technologies, integrated on a single machine tool base

OBRABOTKAMETALLOV Vol. 23 No. 3 2021 technology Ta b l e 3 Initial data for the calculation of allowances and operational dimensions for the treatment of the hardened surface using integrated processing Transition No. Draft The operation and technical requirements for its implementation 1 Turning the surface 1 . Ellipticity within tolerance on diameter D 1 which is to be determined. 2 Surface 1 hardening by HFC at the depth A T . The hardness of the hardened surface is 700…800 HV. Increase in D 1 diameter caused by the 8 ... 10 µm swelling per each millimeter of the hardened layer thickness. 3 Final finish turning and diamond smoothing of the surface 1 Fig. 10. Integrated part processing scheme