Description:

1450MM 4 HI COLD ROLLING MILL 

1450mm 4 hi Cold Rolling Mill (with temper mill function) Project

Part 1. Unit Technical Data
1) Unit Type:Four rollers are adopted (advantages: strong adaptability, good
shape, high precision and strong stability);
2) Unit specification:0.15~6.0mm X 700~1300mm；
3) Unit speed: 10M/S(Max)
4) Left and right coiling tension: 30T (Max), uncoiling tension: 10T (5m/s).
5) Inner diameter of incoming coil: 508-610mm, inner diameter of finished coil:
610mm
6) Outer diameter of coil: 2200mm
7) Single coil weight: 25 tons
8) Lubricant: Emulsion
9) Annual output: 120,000 tons/year (flat 0.3x1250mm)
10) Maximum rolling force: 1800T
11) Motor power: main motor: 1500kw-2 sets
Coiling motor: 1700kw-4 sets
Unwinding motor: 540 KW-1
Tension motor: 355x2 = 710kw, 280x2 = 560kw
12) Total installed capacity: DC 11610KW

Part 2. Main Technical data
The specification of the mill: 450/10501450mm
The maximum thickness of finished steel coil:6.00mm
The minimum thickness of finished steel coil:0.3mm( rolling); 0.15mm( when
leveling)
The max width of steel strip:1300mm
The Min width of steel strip:700mm
the Max outer diameter: 2200mm
the inner diameter of incoming steel coil:Φ508-610mm
the inner diameter of finished steel coil:Φ610mm
The max steel coil: 25T
the max rolling force:18000KN
the Max Rolling torque:121.5KNm
Max rolling speed: 600m/min
the diameter of working roll: 450mm new roll
410mm used roll
The diameter of Support roll:1050mm new roll
980mm used roll
Diameter of tension roll: 610mm
Anti-wrinkle roll diameter: 255mm
Roll length: 1450mm （work roll）
1400mm （support roll）
1450mm （tension roll）
1450mm （anti-wrinkle roll）
maximum opening: 40mm(Maximum roll diameter)
Coiler reel diameter: 610mm/595mm clamp
Maximum tension of coiler: 300 kN
Maximum outlet tension at leveling: 180KN
Drive Type: Work Roll Drive
Maximum coiling speed: 600m/min
Reel diameter of uncoiler: (rising/shrinking): 610mm-560mm (508mm-460mm)
Axial floating volume of uncoiling reel:±75 mm
The maximum tension of uncoiling machine:100kN
Maximum tension at entry during leveling: 144KN
HOUSING:Monolithic closed integral casting
Rack column section:580X500mm2
Rolling line elevation: +1000mm
Rolling line elevation adjustment stroke: 75mm
Lubrication flow rate: 5000l/min
Working Pressure of Hydraulic System
Balancing and bending rollers: system working
pressure:
System working pressure: 21 MPa; System flow: 40 L/min
CPC uncoiler automatic centralized hydraulic control system
System working pressure: 16MPa; system flow: 40L/min
General hydraulic transmission system pressure:
System flow rate: Q = 120 L/min; System pressure: 12 MPa;
* AGC
AGC Press down system Pressure
The maximum design pressure is 32 Mpa, the working pressure is 25 Mpa, and the flow
rate of hydraulic station is 187 L/min.
* AGC
AGC Servo Hydraulic Cylinder: When the force of a single cylinder reaches 9000KN, the
oil pressure in the cylinder is 18.5Mpa.
Roll Balance: Full Hydraulic Multi-Cylinder Balance
Main motor power of unit:
Main motor of rolling mill: DC 1500KW, 750V, 350/1000r/min, 2 sets
Right Tension Roll Motor: DC 280KW, 400V, 1000/1600r/min, 2 sets
Left Tension Roll Motor: DC 355KW, 400V, 1000/1600r/min, 2 sets
Decoiling motor: DC 540KW, 660V, 350/1000r/min, 1 set
Left and right coiling motors: DC 1700KW, 780V, 300/1000r/min, 4 sets
Roll changing device: backup roll hydraulic roll changing, work roll double position
trolley roll changing, hydraulic auxiliary action.
Configuration of rolling mill automation system: industrial computer automation control,
full digital drive control system, hydraulic AGC.
Equipment lubrication: oil-air lubrication of roller bearing, main drive and coiler drive, thin
oil circulation lubrication.
Process Lubrication: Cooling Medium: Emulsion