The rolling manner null in the hot rolling process which possesses the multiple

摘要

PURPOSE: To prevent heat dissipation and reheating loss, and simply achieve the planning of a rolling schedule by grouping heating materials by articles, applicable to a roll, and executing rolling to heated materials and replacing of rolls by grouped heated materials. CONSTITUTION: Heating materials are classified into plural groups corresponding to each heating furnace by articles applicable to a roll. Roll sets 4, 5 and 6 each are prepared to respective heating furnace groups 1, 2 and 3. Lots 11, 12 and 13 for a heating furnace group 1 are rolled by a roll set 4, lots 21, 22 and 23 for a heating furnace group 2 are rolled by a roll set 5, and lots 31, 32 and 33 for a heating furnace group 3 are rolled by a roll set 6. Before the lot 11 to be rolled by a group of heated materials is rolled, the roll set 4 for the heating furnace group 1 is set up, before the lot 21 to be rolled by a group of heated materials is rolled, the roll set 5 corresponding to the heating furnace group 2 is set up, and before the lot 31 to be rolled by a group of heated material is rolled, the roll set 6 for the heating furnace group 3 is set up.