4 Roll Reversing Cold Rolling Mill Annealing Furnace Galvanizing Line

Hebei Moran Environmental Protection Technology.,Ltd is one of main metallurgical equipment factory in China. our products include steel and aluminum rolling mill,2hi 4hi 6hi 8hi to 20 hi rolling mill machine, skin pass mil, tension leverler, tension leverler and skin pass mix mil, caster, steel coating line, annealing furnance
,grinder, and other related equipment and its parts.  our machine has been exported to many country and enjoy a very good reputation among our users.  we also can customize for users according to their detai requirement.

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 4 Roll Reversing Cold Rolling Mill Annealing Furnace Galvanizing Line
4 Roll Reversing Cold Rolling Mill Annealing Furnace Galvanizing Line
4 Roll Reversing Cold Rolling Mill Annealing Furnace Galvanizing Line

4-Roll Reversing Cold Rolling Mill

Note:  We can design the machine according to your requirements!

1.Brief Introduction

The 4-roll reversing cold rolling mill  will carry out finish rolling of stainless steel coils with material thickness of 2.5-3.25mm. After several passes of rolling, it will be rolled into high-precision cold-rolled steel coils of 0.5-1.95mm, using a single-stand reversible four-roll cold rolling mill to ensure high-speed and stable production of thin gauge products.

4 Roll Reversing Cold Rolling Mill Annealing Furnace Galvanizing Line
4 Roll Reversing Cold Rolling Mill Annealing Furnace Galvanizing Line

Characteristics of the Cold Rolling Mill
4 High reversing cold rolling mill is the cold rolling production line which adopts UCM-type single-stand mill. It rolls pickled hot rolled coils into cold hard coils. The unit is equipped with hydraulic AGC. The work roll is equipped with positive and negative bending and subsection cooling. The intermediate roll is equipped with the positive bending and moving, and the front and rear frames are equipped with double X-ray thickness gauge, etc. its Characteristics:
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 bearing's life and reduce oil consumption, pollution and maintenance quantity with high lubrication efficiency.
6.X-ray thickness gauge is adopted, improving the thickness precision of finished strips.
7.The whole control system of the Six-High CRM adopts full digital AC driving devices, PLC Unit process control and remote communication network technology. The power supply and distribution, AC and AC motor control, PLC system, remote I / O system, AGC system and human machine interface (HMI) are integrated through two-level network. In the design, the interfaces between each system are designed in a unified way, so as to form the whole automatic control system of modern CRM.
8.The electric system takes safety protection measures of overload protection, strip breakage protection, emergency cut-off, etc.; the unit is equipped with functions of strip tail automatic deceleration, accurate stopping and multi-point stopping; coiler is equipped with functions of cycle memory, strip length calculation, and jaw accurate positioning.
9.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.
10.In the second-level automation controlled by AGC, rolling schedule is further improved.
11.All key components and parts of hydraulic system adopt import components and parts, which improves system reliability.
12.Hydraulic AGC system is equipped with advanced functions of constant roll gap control, constant roll force control, constant thickness control, mass flow control, thickness pre-control, tension/speed automatic control, etc. 

2. Main Technical parameters of 4 High Reversing cold rolling mill 650mm wide

 

No

Specification  

Data

1

Specification   of Rolling Mill

160/F550´650 mm  

 

2

Drive   Mode

Support   Roll drive

3

Max   Rolling Pressure

6000KN

4

Max   Rolling Speed

120m/min(low   gear); for the high gear: 360-480mpm

5

Max   rolling torque

335   KN*M

5

Winding   tension

0-70KN

6

Winding   speed

0-130m/min

7

Work roll size

F160×650  mm

9

Back   roll size

F550×600   mm

11

Solid   core diameter of mandrel of coiling machine

F500  mm

12

Rolling   line elevation

+1000  mm

13

Housing   section

35cm×45cm=1575   cm2

14

Turning   Roller diameter

200  mm

15

Unit   mechanical equipment electrical installation capacity

DC: 430KW+185*2KW=800KW  

AC: ≈200  KW  

16

Maximum Lifting component weight 

≈5  t(supporting roll device)

17

maximum   installation part weight

≈13  t( housing section)

18

Unit   dimensions 

≈8x14x4  m 

3.Product Program

Standard of coming material

Material quality

300 series stainless steel

Mechanical Properties

σs≤400  N/mm2 

Thickness

2.5~3.25mm

Width

350-550mm

Rolling diameter(interior /exterior)

Φ500/1600/mm 

The maximum rolling weight

6t 

Standard of finished products 

Thickness

0.5-1.95mm

Width

350-550mm

Rolling diameter(interior/exterior)

Φ500/(Φ1600)mm 

The maximum rolling weight

6t

Specification   of our main Cold Rolling Mill

Specification   of our main Cold Rolling Mill

roller   Type

4-roller   , 6-roller, 8-roller, 12-roller, 20-roller cold rolling mill.

Stand   Type

single-stand  reversible cold rolling mill; tandem cold   rolling mill( from 3 stands to 6 stands) 

Size   of finished products

Width:   from 350-1450mm; Thickness: from 0.1mm to 3.0mm

Application

our   range of products covers all areas of the cold rolling industry, suitable for   the production and upstream & downstream sectors of cold-rolled products   such as plain carbon steel, stainless steel, alloy steel coil and plate. 

4 Roll Reversing Cold Rolling Mill Annealing Furnace Galvanizing Line

 4 Roll Reversing Cold Rolling Mill Annealing Furnace Galvanizing Line