420mm (16.5") MINO 4-Hi Cold Rolling Mill: RM-447

420 mm (16.5") MINO 4-Hi Cold Rolling Mill: RM-447 - 4-Hi cold mill for steel, complete Manufacture: - MINO SpA (Italy) - New in 1970 - Last revamp in 2011 Mill Type: - 4-Hi cold mill Material: Steel Strip Width - 420 mm max (16.5") Strip Thickness: - 4.0 mm max entry (.157") - 0.2 mm min exit (.008") Line Speed: - Minimum = 20 mpm (65.6 fpm) - Maximum = 400 mpm (1312 fpm) Coil Size: - ID = 500 mm (19.7") - OD = 1800 mm (70.8") - Weight = 8000 kg (17,637 lbs) UNCOILER: - Mandrel Type: 430-520 mm ID x 500 mm face - Motor = 45 kW DC - Braking Force = 400-1500 kg - Speed = 200 mpm ENTRY SECTION: - Pinch Roll = 180 mm diam x 500 mm face - Straightener Roll = 130 mm diam x 500 mm face - Drive = 11 kW AC motor - Feedup Speed = 20 mpm fixed MILL: a. Roll Size: - Work roll diameter = 170 mm - Work roll face = 500 mm - Backup roll diameter = 560 mm - Backup roll face = 500 mm b. Roll Count: - 10 pairs of work rolls - 3 pairs of backup rolls c. Roll Pressure / Force = 350 mtons d. Main Mill Motor = 635 kW DC, 500-1200 rpm e. Automatic Gauge Control Data - Max static pressure - 210 kg/cm2 - Max pressure static separation - 550 mton - Max dynamic pressure - 140 kg/cm2 - Max pressure dynamic separation - 380 mton - Stroke of hydraulic cylinders - 20 mm - Nominal speed of hydraulic cylinders at 140kg/cm2 = 4 mm/sec - Max acceleration - 120 mm/sec - Number of Hydraulic Cylinders = 2 - Section of EACH cylinder - 1385 cm2 - Maximum possible frequency of intervention (peak to peak) = 6 to 15 Hz correcting 0.2mm f. Hydraulics = complete, included g. Cooling System h. Electrical Equipment RECOILER - Mandrel Type: 500 mm ID x 500 mm face - Winding Force = 400-4000 kg - Drive = 298 kW DC motor, 400-1500 rpm Sold "as is, where is" EXW off foundation, warehouse floor.