Correlations between Thermal Loads during Grind-Hardening and Material Modifications Using the Concept of Process Signatures

摘要: During the process of grind-hardening, dissipated heat from is utilized for a surface layer hardening machined components made steel. A martensitic phase transformation occurs within affected subsurface regions and compressive residual stresses are induced. However, layout grind-hardening given hardness results (material modification) very difficult. Thus, series extensive experimental tests required. To reduce this effort, newly developed concept Process Signatures used to describe material modifications based on thermal load appearing during process. Based an analytical calculation temperature fields (surface- external-cylindrical-grind-hardening), internal was characterized by maximum contact zone gradient at correlated with quantities (heat flux workpiece time). Metallographic investigations were analyze depth change surface, which describing loads. The show that mainly governed whereas influenced additionally quenching time.