<span style="vertical-align: inherit;">4-High Reversing Combined Roughing & Finishing Hot Rolling Mill SMS Mannesmann Demag Sack</span>
 

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