The domestic and foreign steel continuous casting process has been used, before rolling to the slab after leaving the continuous casting machine, the surface temperature is reduced to about 800 deg.] C, while the temperature of the central portion is about 105 0 deg.] C, due to the lower temperature, not Rolling is carried out, and the continuous casting slab is cut and piled up, or placed in a temperature-controlled furnace to continue heating. For such continuous casting slabs, the average temperature is about 925 ° C. If the heating is carried out on the production line, the continuous casting slab is heated from 925 ° C to 1250 C to be rolled. Because the surface temperature of the continuous casting slab is low, the temperature of the central part is higher, and the induction heating is heat from the surface first, and the heat is transmitted to the center. Therefore, the continuous casting slab is supplemented by induction heating and then continues to be rolled, which is a good energy saving. The method makes full use of the waste heat of the blank, and many steel mills have already realized the process. The heat required to heat the slab from 925 °C to 1250 °C is equivalent to 60 kWh/t . If the induction heating efficiency is 50% , the unit power consumption is 120 kWh/t , which can save energy by 68% . An external view of the continuous casting billet induction heating device,

The number of inductors is determined by the productivity of the slab. In order to support the continuous casting billet, water-cooled rolls are provided between the inductors, and the transfer strands are heated by the respective inductors to the required rolling temperature.

Continuous casting billet induction heating furnace parameter summary table