SKIN PASS MILL - DUO MILL - 80-470 MM - 4.0-0.2 MM

SKINPASSMILL210301

MANNESMANN DEMAG

Qty. 1 Second-hand skin pass mill

Mannesmann Demag Sack Built

Duo Cold Rolling Mill – Non-Rev. Dia. 330 x 500 mm

Carbon steel, cold rolled and annealed

80 - 470 mm Thickness entry

Decoiler Modernised in 1986

400 with segments 500 & 600 mm Spreading range

1300 – 65 daN Braking system

max. 1300 daNm De-coiling speed

20 – 1880 mm² Coil weight per mm strip width max.

300 – 330 mm Roll length

1850 – 2400 kN Min. roll force

1 – 3 mm/sec. Rolling speed

400 mm with segments

2500 – 25000 N Motor power

500 – 2500 N Motor power

i = 14.66 Lubrication

Decoiler Modernised in 1986

400 with segments 500 & 600 mm Spreading range

1300 – 65 daN Braking system

max. 1300 daNm De-coiling speed

2 x 16 kW Motors in parallel arrengement

1 Motor can be decoupled by gear shifting

0-405/2025 Transverse displacement

Modernisation in 1993

Hydraulic roll adjusting device

Adjustment by position and roll force-controlled hydraulic cylinder arranged on the stands.

Control via fast acting servo valves.

Strip thickness control

Consist of the electrical cubicle (1600 x 1600 x 600 mm) with all necessary supply units provided

for the following types of control

Position control Roll pressure regulation Return regulation (analog/digital)

Degree of skin pass measurement Degree of skin pass regulation

Qty. 2 Positioners Qty. 2 hydraulic-electric converters for measuring the rolling force

1 Exit guiding system (left side of the rolling mill)

The exit guide is equipped with the following devices

Base support with table top and places for tape thickness measuring device, tape greasing roller

and skin pass level measuring device, hydraulically adjustable folding table, hydraulically

operated crop shear with angled cut upper knife, loose deflection roll, bearing of the deflection

roll intended to accommodate a strip tension measuring device.

1 Oscillating cleaning device of the top roll

1 Oscillating cleaning device of the bottom roll Coiling station

With 2 input shafts, helical gears, hardened and grinded, shafts mounted in roller bearings,

pneumatically operated gear shift stage for belt tension changeover, lubrication of the gear unit

by an attached oil lubrication pump, toothed clutches to connect the motors with the gear unit,

pneumatically operated disc brakes as idle brakes.

In flange design, hydraulically operated, clamping device to grasp the beginning of the strip

separately controlled, cylinder with circumferential oil supply, cast steel attachment segments to

increase the diameter from 400 to 500 mm

Hydraulically operated coil pusher with spring-loaded belt scrapers, attachment to the winding

gear, guide in round bars.

1 Strip pusher Hydraulically operated

For unwinding interlayer paper, winding shaft mounted in roller bearings, set up for tensioning

paper rolls, braked by a pneumatically operated disc brake

With hydraulically operated lifting and driving device as well as tilting device and movable pit

lock, coil holding device for narrow coils, hydraulically swiveling and hydraulically adjustable to

For holding 3 coils of max. width and min. coil diameter of 800 mm, coil magazine made of

welded construction anchored in the foundation and provided with a polyamide or wooden

including rolls and pinion sleeves for driving the rolls, arranged between the pinion gear and

the rolls, support device for the joint spindles when changing rolls, the support is hydraulically

1 Hydraulic balancing for the above roll installation unit

1 Cushioning plate arranged in a tilting gutter for coil cushioning

4 Wear strips for mounting in the stand windows

16 Wear strips for the chocks

1 Transfer tables of the unwinding deflection roll stand

Shortening of the table and renewal of the hydraulic cylinder as well as attachment of a console

to accommodate the skin pass degree measuring device

1 High pressure hydrauli aggregat

For supplying and controlling the adjusting cylinders, designed for an operating pressure of

250 bar, nominal pressure 315 bar,

the hydraulic unit consists of

oil tank, pump station and additional reserve pump, filter station and valve stand, the system is

internally piped, the valves are wired

1 Hydraulic aggregat with valve stand

To supply and control all hydraulic cylinders within the existing assemblies described above

(without unwinding station)

The unit is designed for an operating pressure of 100 bar, nominal pressure 120 bar and

oil tank, pump unit and additional reserve pump, filter station and ventlistand, control by

electro-magnet valves, the system is internally piped and the valves are wired.