4-High Reversing Combined Roughing & Finishing Hot Rolling Mill SMS Mannesmann Demag Sack

Mfg. SMS Mannesmann Demag Sack
Year of Mfg. 1978; continuously upgraded
Min/Max plate width 1.500/3.800 mm
Plate thickness range 4 to 150 mm
Min/Max Plate length 6 to 42 Meter
Max Rolling Force 78.500 kN
Nominal Rolling Force 65.000 kN

(24) Work Rolls
Face length 3.900 mm
Diameter 900-1.000 mm
Weight each 30 Ton
(6) Back-Up rolls
Face length 3.600 mm
Diameter 1.950-2.100 mm
Weight each 136 ton
Bearings Mesta Oilfilm Bearings
Rolling level, above floor 750 mm
Pass Line level 25-35 mm
Max Rolling Speed 6 m/sec.
Main Drive Motors (Twin Drive) 11.540kW each

Features:
Electromechanical Adjustment EGC (Electronic Gap Control)
Distance between the screws 5100 mm
speed 34 mm/sec.
Stroke of the top roll 500 mm
Hydraulic Adjustment HGC (Hydr. Gap Control)
SMS-SERMUS AGC (Automatic Gauge Control + Roll Force Measuring)
travel 3.0 – 15 mm; max travel speed 14 mm/sec.
max stroke 20 mm
Roll Bending
max bending pressure 660 kN (top work-roll)/420 kN (bottom work-roll)
Automation
Siemens S-7 (2019-2020)
Rolling Controls VAI-Vantage Level 2
VAI-Xpicit Automatic Inspection
Additional Equipment
Slab Descaler SGGT (2009) by Hi-Pressure Waterjets (top + bottom), Pressure 120 and 320 bar
Side Edgers on entry conveyor
3-Track thickness and temperature measuring THERMO FISCHER SCIENTIFIC
Gantry Crane LIESGANG, cap. 250 ton for lifting the Rolls with chocks.
(6) Spare Bearings, some previously used