For flexible and temperature-stable adaptation of the billet flow to the needs of the hole punch, several vertically arranged inductive intermediate heating furnaces are installed downstream of the preheating .
These are inductive single-billet furnaces whose coils are equipped with taps to adapt the active coil to the length of the block to be heated.
The tap is selected automatically using an integrated length measuring system.
The billet to be heated is removed from the roller table system and brought into a vertical position by means of a swivelling device.
An electrically powered lifting mechanism then positions the billets into the induction coil.
The energy supply for heating the billets takes place according to the necessary temperature increase to approx. 1200 °C, which is determined by non-contact temperature measurement on the surface and front of the billets. As soon as the punch press requests the billet, it is lowered and transported to the press via the conveyor table system.