HOT ROLLING METHOD FOR BILLET

摘要

PURPOSE:To prevent separation and breaking at a joined part caused by a tension control, especially in a finish rolling when the rear end of a preceding billet and the front end of a following billet are joined and a continuous hot rolling is carried out. CONSTITUTION:The rear end of the preceding billet for which a rough rolling is finished and the front end of a following billet are pre-joined and when the pre-joined billets are continuously hot rolled, the rolling is carried out by restricting tension to less than the tension strength at the prejoined part in the first half of the finish rolling of the above-mentioned joined billets.