2D-FEM analysis of rolls temperature field in induction heating process

Abstract

Hot-roller warm rolling process is expected to achieve a breakthrough in solving the problem of high quality rolling for difficult deformed metals. In this paper roll surface induction heating was studied based on the finite element theory of electromagnetic-thermal coupling and experiment. The law of temperature field for a static roll in induction heating process was analyzed by FEM. The results show that roll surface temperature can achieve 721 at 48s under 20000Hz power frequency, 350×10 4 A/m 2 current density, due to the skin effect on roll surface. Using a special induction coil in the laboratory, an experiment of roll induction heating was carried out with the same process parameters. The calculated results of temperature on roll surface agree well with the measured value.

Rolling of AZ31 Magnesium Alloy Strip Using Induction Heating Rolls

“…In the models, since the symmetry of strip rolling processes, a half of rolling model was employed, and a modeling method of equivalent hollow roller [5] was adopted to decrease computing workload. The plastic property of AZ31 was determined based on a tensile test carried out by Chang et al [6] and temperature field of roll was assigned according to °C previous research on induction heating process [7]. The main material parameters are listed in Table 1.…”

Investigation and modelling of work roll temperature in induction heating by finite element method

“…FEM simulations and experiments were performed to analyse edge defect generation in plate rolling; and it was proposed that increasing the temperature of the edge zone of the slab by induction heating could reduce the possibility of corner crack formation (Pesin and Pustovoytov, 2015). Cai et al (2013) introduced the idea of warm rolling with a work roll heated by the induction heating method and analysed the temperature distribution of the work roll using a 2D FE model and the heat generation model proposed by Mei et al (2010).…”