Semi-continuous hot rolling of metal strip and plates

Abstract

The mill comprises essentially a roughing train having a reversing roughing stand or stands and a finishing train having a reversing finishing stand or in-line finishing stands, the roughing and finishing trains being disposed with pass lines parallel to each other and at different elevations, the work in the roughing train progressing in the opposite direction from the work in the finishing train. The roughing train for strip and light plate is provided with a hot upcoiler at each end positioned above the table so that slabs and breakdowns pass beneath them, but adapted to coil and payout strip of coiling gauge. The delivery end of the roughing train is laterally opposite the entry end of the finishing train and separate mechanisms are provided for transferring coils and plate broadside from roughing train to finishing train. The run-out table for strip and light plate extends in front of the slab heating furnaces, so drastically shortening the length of the mill building without greatly increasing its width. Cooling beds for plates are arraned at right angles to that table. A wide plate mill comprising a reversing breakdown stand with turn-arounds and a reversing finishing stand arranged in the same way as the strip and light plate mill may be added on the other side of the heating furnaces, so utilizing some of the cooling facilities of the strip and light plate mill.