Understanding Rolling Process in Long Product Rolling Mill
A long product rolling mill comprised of equipment for reheating, rolling and cooling. ... Good figures for rod and bar mills are 90 % to 93 %, for structural mills, the good mill utilization figures are 75 % to 78 %. If a mill rolls 80 % of the calendar year, that is 365 x 24 x = 7008 hours. If the mill rolls 800,000 tons per year, it ...