Demag Cold Rolling Mill

Description

Used 1320mm Stainless Steel Coil Manufacturing Plant (Cold Rolling Mill x 2 Lines).Manufacturer: DEMAG (Germany). Electric part manufacturer: Reliance. Installation year 1989

- COIL PREPARATION, MATERIAL:
Hot Rolled Stainless Steel (AISI 300 and 400 Series)
Strip thickness:3mm~ 6mm
Strip width:600mm~ 1,320mm
Yield strength: 60kg/㎟
Shear strength: 70kg/㎟
Coil I.D.: 610mm~ 760mm Entry
Coil O.D.: 2,000mm Entry and Exit 2,200mm Including Paper 1,000mm minimum
Coil weight: 20 tons maximum
Line speed: 20~ 60m/min
Threading speed: 20m/min
Leader strip: 4.0 maximum strip thickness
Leader strip length:4m~10m
Side trimmed scrap width:12mm minimum to 40mm maximum
- PRODUCT:
Cold Rolled Stainless Steel (AISI 300 and 400 Series)
Strip thickness: 0.3mm~ 3.5mm
Strip width:510mm~ 1,320mm
Coil I.D.: 610mm
Coil O.D(with paper and sleeves): 1,850mm, Max. 1,950mm Min. 1,000mm
Coil weight: 20 tons maximum (15kg/mm strip width)
 
20-HI SENDZIMIR MILL
-UNWINDER 
Drive:N=224KW
n=0~408/1,200rpm
Unwinding Speed: V=200m/min.
Gear ratio:I=11.76
Mandrel dia.:610mm
Expansion range:560/620mm
Strip tension: Max. 70Kn, Min. 7kN
- MILL
Manufacturer: DEMAG (Germany)
Installation year: 1989
Rolling direction: right to left
Mill drive: N=2,260KW(15%Continuous Overload) n=0~331/825rpm
Rolling speed: V=0~180/450m/min.
Gear ratio:i=1
- ROLL SIZES 
Work roll dia.: 63.5mm
1st Intermediate roll dia.:102mm
2nd Intermediate roll dia.:173mm
Backing bearing dia.:300mm
Backing bearing width: 172.64mm
Number of Backing Bearing: 48
- LEVELLER
Drive:N=27KW
n=900rpm
Levelling speed: V=20m/min.
Gear ratio:I=25
Levelling roll dia: 200mm
- WINDER
Drive:N=2,500KW
 n=0~265,331/1,058rpm
Gear ratio:i=4.505
Winder mandrel dia:610mm
Max. strip tension:400KN-360m/min.(32.6ton)
-AUXILIARY EQUIPMENT
Hydraulic system: P=130bar Q=420L/min.
Servo hydraulic system: P=210bar Q=40L/min.
Roll cooling oil system:7,000L/min.
Central lubrication oil systemfFor gear units: 550L/min.
Sump pumping station: 500L/min.
Mist Exhaust System: V=100.
- ANNEALING & PICKLING
Material: Hot and Cold Rolled Stainless Steel,300 and 400 Series
Yield strength: 140kg/㎟ Max. for Cold ,50kg/㎟ Max. for Annealed 50kg/㎟
 Max.for Hot
Strip thickness: 3mm ~6mm (Hot Rolled) /0.3~3.5mm (Cold Rolled)
Strip width:600mm~1,320mm
Coil I.D.: 610mm
Coil O.D.:  2,200mm maximum including paper
Coil weight: 20 metric tons maximum
Line speed:
Entry 6~40(50)m/min
Process 6~32(40)m/min
Exit 6~40(50)m/min
Leader strip: 4.0mm Max. thickness,  4m~10m Length
- GRINDING & POLISHING
Yield strength: 56kg/㎟
Shear strength:75kg/㎟
Strip thickness: 3~6mm(Hot Rolled Steel) /0.5~3.5mm(Cold Rolled Steel)
Strip width:600mm ~ 1,320mm
Coil I.D.: 610mm
Coil O.D.: 2,200mm maximum Including paper 1,000mm minimum
Coil weight: 20 metric tons maximum
Line speed: 5~10m/min grinding(Low)/10 ~ 20m/min polishing(High)
Threading speed:10m/min
Strip tension:27ton maximum Low Speed /13.5ton maximum High Speed
- SKIN PASS MILL
Strip width: 510mm~1,320mm
Strip thickness: 0.3mm~3.5mm
Coil weight: max. 20ton (plus paper)
Max./Min. barrel dia.: 800/750mm
Barrel length:1450mm
Barrel hardness approx..: 100˙Shore D
Rolling speed: 0-100 / 200m/min
DC motor: 0 - 450KW (15% Continuous overload), 0/649/1290 rpm
Mill gear ratio: I=15,197
Roll positioning: hydraulic positioning
Max. roll force: nominal 1000tons /Max. 1200tons
P.O.R.: Min. 610mm, Max. 630mm
Tension reel: Nom. 610mm, Min. 580mm
- SHEAR & SLITTER
Manufacturer: Reliance
Strip width: 500~1320mm
Strip thickness: 0.3~3.5mm
Coil weight: max. 20ton
I.D.: 610mm
O.D.: 1000~7500mm
Line speed: shearing=60m/min(0.3~2mm) , 30m/min (2~3.5mm)
- SLITTER
Manufacturer: Reliance
Strip width: 500mm~1,320mm(Finish min. 45mm)
Strip thickness:0.3mm~ 3.5mm
Coil weight:max. 20ton
I.D. 610mm
O.D.: 1,000-7,500mm
Line speed: 60m/min. (0.3-2.0mm t) Max. , 30m/min(2.0-3.5mm t) Max.