Cold rolling mill to laminate a strip of steel, systems of tandem rolling mill and inverter, and methods of modifying a system of rolling mill and cold rolling mill operation of a

摘要

Cold rolling mill to laminate a strip of steel, systems of tandem rolling mill and inverter, and methods of modifying a system of rolling mill and operating a rolling mill cold.If you reduce the diameter of the roll of work.The rolling of a strip of steel harder than ever, and rolling a strip of steel of the same hardness than before in a higher ratio of reduction can be carried out,While avoiding the lowering of productivity due to the use of such a rolling mill work roll of small diameter as in the rolling mill of the type cluster.A rolling mill cold 51 to a strip metal laminar 1 minimum width of not less than 600 mm and a maximum width of not less than 1500 mm but not more than 1900 mm.Includes a pair of upper and lower intermediate rolls 2 to laminate the steel strip 1 to be laminated; a pair of upper and lower intermediate roller 3 supporting the work rolls 2.Respectively; a pair of upper and lower rollers 4, supporting the intermediate rolls 3.Respectively; a displacement device to roll axial direction 23 for each of the intermediate rolls 3, and diversion devices 10.11 for each of the rolls of a work 2 and intermediate rolls 3.Each of the rolls of work 2 has a diameter not less than 300 mm but not greater than 400 mm and each intermediate roller 3 has a diameter not less than 560 mm.But not more than 690 mm.