Numerical and experimental investigation of induction heating process of heavy cylinder

Highlights: • The electromagnetic-temperature-stress multi-field coupling model of heavy cylinder induction heating was established. • The solution for acute angle effect problem of heavy cylinder induction heating was proposed. • The heating effects of traditional resistor furnace and induction heating were compared. - Abstract: In this work, the induction heating of heavy cylinder is numerically and experimentally studied. The electromagnetic-temperature-stress multi-field coupling simulation are performed, using the ANSYS software in order to investigated the induction heating process of heavy cylinder, simulation results show that the end of heavy cylinder would be overheating and burning because of the acute angle effect and the high magnetic flux density when the rectangular coil is used. And then, the acute angle effect problem of heavy cylinder in the induction heating process is investigated, a solution of welding heat treatment ring at the end of the heavy cylinder and adding the magnetizer at the end of coil is proposed, and the acute angle effect can be eliminated. Furthermore, the heating effects of heavy cylinder by traditional heating method and induction heating method proposed are compared, simulation results show that the heating efficiency and the energy saving of induction heating are improved greatly. Finally, the heat treatment experiment of heavy cylinder material based on induction heating is investigated, experiment results show that the mechanical properties of the heavy cylinder can meet the application requirements.