_,-'

Another modification of the pre-forming of slab ends method is the so-called "bite back rolling process" (Fig 16.11) that was developed by Kawasaki Steel, Japan [9]. In application to rolling from ingots in a horizontal mill, the bite back rolling process consists of the following five steps: Step 1 Initial reduction to remove primary scale and eliminate the ingot taper in the direction of the

width and thickness. Step 2 Primary bite and back rolling in the direction of the thickness of initial value h 1 which forms a

recess at the head end of the ingot with the thickness hb (Fig. 16.11a); passing the ingot without reduction (Fig. 16.11b) and bite and back rolling in the direction of thickness at the tail end of the ingot; subsequent rolling in the reverse direction (Fig. 16.11c) to provide metal flow to the recesses that are formed during the bite and back rolling.