In walking hearth furnaces the charge is transferred by the movable hearth part with the stepwise movement from the loading side towards the unloading side.
Walking hearth furnaces are continuous furnaces. They are designed to preheat rolling mills and bars. It can be used for different dimensions. Depending on the after treatment and assumed process, the production lines for include many additional devices, like:
The advantage of walking hearth furnaces is the charge heating from three or four sides, as the charge parts are arranged in this type furnaces with some distance to one another.