Machine is made in 2011

Machine is dismantled in October, 2021

1.1 Power supply data

-      Frequency 50Hz ± 10%

-      High voltage 10kV ± 10%

1.2 compressed air

-        The pressure is 0.5 ~ 0.8MPa,

-        Oil content < 1ppm

-        Atmospheric dew point < = - 40 ℃

2.1 Product size

    Material: stainless steel, carbon steel

-        strip width

                      ·1250mm Max

                      ·Minimum 700mm

-        Maximum coil weight 20 t, excluding sleeve

-        Coil size

                      ·Inner diameter 610mm

                     ·Maximum outer diameter 2000mm

                     ·Minimum outer diameter 900mm

-        Raw material thickness < = 3.5mm

-        Finished product thickness : > = 0.1mm

Max. speed: carbon steel 600m/min

                           stainless steel: 400m/min

3.1 Roll

Working roll:Ф63.5*1444；Material: cr12movgo 

Working roll quantity: 2

-        Diameter range

-        Min. 58 mm

-        Max. 73.5mm

-        Hardness 60-62hrc

-        Grinding depth per week: > = 0.05mm 1st

Driving roll: Ф102 * 1550mm material: 5cr5wmosiv

            Driving roll quantity: 4

-        Diameter range

Min.: 96mm max.: 102mm

-        Hardness 58-58hrc

-        Roughness: ra1

-        Grinding depth: 0.1mm second

  Back up roll: Ф173 * 1586mm material: 5cr5wmosiv

         Back up roll quantity: 14

-        Pinch straightener

·Drive motor: * DC motor

*Power 30KW

*Speed 1500 rpm

·Gear reduction ratio 28 / 1

·Roll diameter 200mmMain parameters of rolling mill

-      rolling mill

·Tension

*450kn at 600m / min         *350kn at 800m / min

*30KN, min

-      Steering roll

·Drive motor:

*Acvf motor

*Power: 7.5kw

*Speed 0 / 637 rpm

*Direct drive

-      Structure negative convexity structure

-      Type zgm1400

-      Maximum rolling force 8000kN

-      Mill stiffness 4800kn / mm

-      Material cast steel

-      Manual door opening

-      Locking hydraulic pressure

- the maximum roll gap of the working roll under the nominal roll diameter is 6.833mm

-      Support bearing

Type eight groups number on each axis 6 total 48

Outer diameter 300mm, inner diameter 130mm, width 172.6mm

-      Saddle

Saddle spacing 215.9mm (8 1 / 2 ") saddle clamping operation manual wrench lateral adjustment (push-back type)

In order to release the load on the opposite side of the strip, only a certain taper is provided on the middle side of the pair of rollers.

technical data

The adjustment of an intermediate roll must be performed under the condition that the speed is greater than 0.5m/s

Through the rotation and positioning of the two upper support rollers "B" and "C", the rack is driven by the hydraulic cylinder and the gear rod meshed with the gear installed at the shaft end controls the main pressure.

A servo valve is installed above the hydraulic cylinder to avoid absorbing air.

Press up and down to install emergency opening.

An MTS displacement sensor is installed on the upper holding down cylinder on the operation side to cooperate with the servo valve to control the displacement of the holding down cylinder

Elevation adjustment of rolling line

Through the rotation of two sets of lower backup rolls "F" and "g", the position of the lower work roll can be adjusted according to the relationship with the pass line of the rolling mill.

These shafts are hydraulically rotated through gear rods and transmission gears in the same way as pressing up and down, but they are only operated under "no-load" conditions with the help of hydraulic cylinders located under the mill housing on the operating side.

technical data

Side eccentricity adjustment

The two outer shafts "a" and "H" and the other two outer shafts "d" and "e" are meshed together respectively and can be rotated by hydraulic motor, so as to make the two upper and lower rollers of the roll group close together and compensate for the reduced roll diameter.

Adjust only under "no load" conditions.

technical data

"As-u-roll" crown adjustment

A function to change the relative height of each bearing is provided on the "BC" and "FG" shafts, so that the operator can increase or reduce the amount of crown and wedge in the rolling mill. This is achieved through the double eccentric structure of the saddle, which can be realized by using these shafts that the toothed rod rotates alone.

technical data

Thickness gauge (X-ray)

- Two thickness gauges are installed on the guide roll base on each side of the mill housing.

4auxiliary equipment

- hydraulic equipment

It is equipped with two hydraulic devices to serve the rolling mill and its auxiliary equipment. The first one is used for main screw down device, lateral adjustment and

Operation of s-u-roll. The first one is used for the operation of all other functions. The intermediate piping and on-board piping are made of stainless steel.

Technical data high pressure pump station

CPC pump

Thin oil station

Three pumps, two for use and one for standby under normal conditions, oil tank volume: 10000l

Medium: 220# closed heavy-duty gear oil

Emulsion filtration system

It is divided into reflux box (including compressed air purging and magnetic filtration), plate box and bearing lubrication box. There are two plate lubrication pumps, two lifting pumps and two bearing lubrication pumps.

Parameter pump

One set of X ray thickness gauge

Total weight approximate: approximate 750 t