650mm 6Hi Reversible Cold Rolling Mill

Description

650mm 6Hi Reversible Cold Rolling Mill
1. Its usage
The 650mm 6Hi Cold Rolling Mill was always designed according clients requirement, it can roll 2.0-4.0mm thick picked hot rolled steel plate SPCC, SPCD, 08A1, ST12, DC01 into 0.5-1.5mm thick cold rolled steel coil.
 
2. Technical data of the Mill
No Specification   Data
1 Specification   of Rolling Mill 600/250/200*650mm
2 Max   Rolling Pressure 400   Tons
3 Max   Rolling Torque 36kN?m
4 Max   Rolling Speed 400m／min
5 Max   threading speed 18m／min
6 Max   coiling speed 420m／min
7 Max   coiling tension 10   ton ( Max)
8  Barrel length of work roll  Φ200／Φ180×650㎜
9 Max   opening 20mm(   at the max
3.Product Program
Standard of coming material
Material quality Picked Hot rolled steel coil   SPCC SPCD, 08A1,ST12, DC01
Thickness 2.0～4.0mm
Width 300-550mm
Rolling diameter（interior /exterior） Φ600/(Φ900-Φ1800)mm
The maximum rolling weight 9t
 
Standard of finished products
 
 
Thickness 0.5-1.5mm
Width 300-550mm
Rolling diameter（interior/exterior) Φ600/(Φ900-Φ1800)mm
finished   product precision -Vertical thickness deviation
               ±0.01mm
Plate type precision The   maximum allowable value of unevenness≦20I
The maximum rolling weight 9t
4. Features:
1)Uncoiler is equipped with CPC automatic centering function, which adopts EMG products from Germany, and improves the centering response speed and position control accuracy.
2)Rolling line adjustment equipment adopts stepwise wedge combination adjustment, and the input roll diameter can quickly and automatically control the stepwise wedge displacement of the oil cylinder drive to the right position, realizing automatic and quick adjustment of the rolling line
3)Positive and negative bending of the work roll; the intermediate roll has transverse moving presetting, locking, and positive bending control measure. The bending roll can be controlled from single side; rollers are equipped with subsection cooling and roll shape adjustment. Multiple-plate-shape control measure is able to better control the plate shape of finished strips.
4)Double-station roll changing carriage is adopted, which realizes the swift changing between the work roll and the intermediate roll.
5）Roll system of the rolling mill, the turning roll, and the oil removal roll bearing adopt air-oil lubrication, which can prolong the bearings life and reduce oil consumption, pollution and maintenance quantity with high lubrication efficiency.
6）Imported X-ray thickness gauge is adopted, improving the thickness precision of finished strips.AGC automatic system adopts S7-400+FM458 structure, which makes the utmost use of the controller and matches the quick response of the high-speed rolling mill.
7）In the second-level automation controlled by AGC, rolling schedule is further improved.
8）All key components and parts of hydaulic system adopt import components and parts, which improves system reliability.
9）Hydaulic AGC system is equipped with advanced functions of constant roll gap control, constant roll force control, constant thickness control, mass flow control, thickness precontrol, tension/speed automatic control, etc