Abstract
A new technology for the final induction heat treatment of large mill rolls has been developed. When designing this technology, installation and control system, a digital twin of the system was created on the basis of combined numerical models of electromagnetic and temperature fields in cylindrical axially symmetrical systems. The final heat treatment of mill rolls consists in a two-stage, multi-frequency induction hardening of body of large rolls. The developed digital twin of the system allows one to evaluate the key features arising during induction hardening, such as temperature distribution, hardness of the hardened layer, stresses that arise during hardening. The design of induction systems through digitalization allows one to improve the design, equipment composition and heat treatment mode to achieve maximum quality and minimize energy costs.
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