20- HI REVERSING COLD ROLLING MILL

20-Hi reversing cold rolling mill
Mfc.: DEMAG
Built: 1967
Overhauled in 2001
Status: Running in good condition
Type: 20-Hi x 1,000 mm wide Cold Rolling Mill
Material to be rolled: Hot rolled and pickled coil of low carbon steel
Strip Width: 1000 mm max. Strip thickness: 0.095 - 2.0 mm
Coil size: 508 I.D x 1850 O.D Coil weight: 18 ton max
Mill hand: Right to Left Mill speed: 530 m/min. max
Phase wise up gradation:
2001: Erection & commissioning with sophisticated L&T drive, Modicon PLC, Spradecom
thickness gauge & AGC Alstom PLC.
2004: Thickness gauge up gradation with M/S Jasch Engg. Pvt Ltd.
2005: Coil rolling capacity increased 10 ton to 18 ton mechanically and electrically drive
upgraded with M/S control technique to get optimum Tension and AGC revamped with M/s Pitel Engg pvt Ltd, India
2010: PLC &HMI system upgraded with Siemens (Latest version).
2015: Drive system revamping with ABB ACS 800 (latest version) and Siemens PLC & HMI
Specification:
Work rolls: 2 no. 60 mm dia x1 114 mm length
Back up roll: 8 no. with 40 no. bearing set
Roll barrel: 300 mm dia x 172 mm width
Drive roll: 4 no 170-173 mm dia, 1221 mm length
Idler Roll: 2 no 170-173 mm dia, 1258 mm length
IMR: 4 no 98 mm to 104 mm dia, 1185 mm length
Motors
Main mill: 2 x 1750 HP DC, 0