-To study the effect of various types of magnetic field concentrators on the energy and thermal characteristics of the induction heating system of noncylindrical billets in the magnetic field of rotating permanent magnets, a numerical model was developed. The model allows solving the conjugate electromagnetic and thermal problem. Using the model, the authors were able to calculate the integral active power released in the heated billet, the mechanical moment that the magnetic system experiences from the current induced in the billet and the distribution of the temperature field in the "inductor-heated billet" system. In this paper, the authors consider the results of numerical studies of heating aluminum billets with a rectangular cross-section and the influence of several types of magnetic field concentrators on the electromagnetic and thermal processes in this system.

No abstract

No abstract

No abstract

The relevance of the work determined by the fact that at the present time in the area of new energy-saving electrotechnologies for heating of non-ferrous metals products focus is on induction heating in a transverse magnetic field, meanwhile not it is covered by the heating method in a transverse magnetic field a large range of products with rectangular cross-section made of non-ferrous metals. Currently, such products are heated in the induction heating installations in an alternating longitudinal magnetic field while electrical efficiency is not greater than 0.5. The attractiveness of heating of such products in the transverse rotating magnetic field of the permanent magnets is its potential to achieve electrical efficiency equal to 0.75-0.85. In the presented article, it is discussed performed studies of heating of aluminium products with rectangular and cylindrical cross-section to a temperature of 550 ° C.