Used 20-HI REVERSING COLD ROLLING MILL - 1000 MM - 0.095-2.0 MM

Listing description

Year 1967, 2001
Brand DEMAG, SIEMENS
Qty. 1 Second-hand 20-Hi reversing cold rolling mill
Mfc. DEMAG Built
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
Coil size 508 I.D x 1850 O.D Coil weight
Mill hand Right to Left Mill speed
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 – 450 – 760 rpm Gear box ratios

ETR
2 x 900 HP DC, 0 – 230 – 730 rpm Gear box ratios

DTR
2 x 900 HP DC, 0 – 230 – 730 rpm Gear box ratios

Pay off reel
1 x 25 HP AC (for threading only) Leveller and feeding motor

Pay off reel Cone Type Strip tension
Strip winding Under winding
Thickness control
Automatic gauge control system (AGC), Pitel Engg. Pvt Ltd.

with Hydraulic cylinder operated system
Thickness measuring
Non contact type thickness measuring Gauges at Mill entry and delivery

side
Type Isotope, 3 curie Movement
Roll Separating force 50 ton
Measurements Pass line height
Roll coolant VELROLL Grade
COT pump motor 110 kW DOT pump motor
Fume exhaust system Installed with Mill hood
Motor ventilation Blower Motor power 350 kW AC, 970 rpm
Lubrication system One no centralized lubrication for Entry, Exit
Tension reel GB and Mill pinion stand.
Motor Bearing White metal bearing Motor bearing lubrication
Tension Reels
Expanding/Collapsing Single expansion type Mandrel.

Transformer Specification
Mill Transformer
11 kV/750 V dual winding V, 50 Hz, DdOYN11, 4100 kVA

DTR transformer 11 kV/750 V, 50 Hz, DYN11, 2000 kVA
ETR Transformer 11 kV/750 V, 50 Hz, DYN11, 2000 kVA
Auxiliary Transformer 11 kV/440 V, 50 Hz, DYN11, 2000 kVA
VCB Specification
Incomer 1250 A, Drawout type
ETR Transformer 630 A, Drawout type
DTR Transformer 630 A, Drawout type
Mill Transformer 630 A, Drawout type
Auxiliary Transformer 630 A, Drawout type
Automation device
Drive system
DC drive, ABB Commissioning done by Control Care

PLC S7 300 and 315, Siemens
AGC
Thickness control with auto gauge control and ASD.M/S Pitel Engg.Pvt Ltd.

HMI system Semantic, Siemens, Control Care India Ltd.

This equipment is located in DE