Continuous furnaces are classified according to the number of heating zones, the method of moving the heated billets (pusher-type and roller conveyor type), and special structural features.
- The furnaces are heated by gaseous or liquid fuel or electrical using burners or atomizers located mainly on the side walls of the heating and soaking zones; less frequently the burners are attached to the top walls and furnace roof.
- The temperature in continuous furnaces is constant over time and variable over the length of the furnace.
- In the heating and soaking zones the temperature is almost constant; in the holding zone it decreases toward the front of the furnace.
- Continuous furnace plant is complete automatic with PLC, HMI, SCADA system.