Procedure for Controlled Heating that Varies in Time and Location – Fundamentals for the Future Rolling of Hardened Components at Elevated Temperatures

Abstract By influencing the properties of the surface and subsurface through deep rolling, the fatigue life of components can be significantly increased. However, this is largely dependent on the temperatures that occur during the process. To gain a deeper understanding of the thermal influence during hard turning, it is necessary to analyze the thermal influence decoupled from the machining process. For this reason, a method has been developed that allows the inductive heating of components to specifically study the influence of deep rolling at different temperatures. Based on simulations, the inductive heating of bearing rings was designed and implemented in a machine tool. The method allows targeted local and time-defined heating through knowledge of the coupling power and temperature control during inductive heating in a machine tool. Surface temperatures ranging from T O = 100 °C to 400 °C can be set.