A.    Product information

maker: china brand

1. Rolling requirement

a.       coil material type：carbon steel

b.      coil specs：thickness 2.75mm, width 400mm, coil ID：Φ508㎜, max coil weight：3500kg

c.       finished product specs：≤0.9*400, coil ID：Φ508㎜, max coil OD：Ф1600mm, max coil weight：3500kg

d.      rolling pressure P≤300T

e.       rolling speed: design speed 180m/minute, normal working 150m/minute

2. rolling technological process

accumulator: Ф330-360 hydraulic expanding loading rack, hydraulic shear and welder, spiral accumulator

1#tandem ---2#tandem ---3#tandem ---coiler

3. components and specs

a.       1#tandem, 2#tandem, 3#tandem

b.      1#tandem spec: Ф175/Ф450X450mm working rolls transmission, 1#tandem, 2#tandem spec: Ф145/Ф450X450mm back up rolls transmission

c.       pressing part:

1.    pressing motor: Y  11KW*2.  6级

2.      high speed worm gear box:  WS170，i=41；center distance A=170mm

3.      low speed worm gear box:double enveloping worm gear,center distance A=315mm,Mn=12 mm，i=40

4.      pressing screw: Ф160X6 pressing speed:0.05mm/s

5.       pressing box body adopts cast iron

d.      stand

1.      2 closed houses，column section area：250X350mm, ZG35

2.      window sliding plate,  wholistic processing，manual shovel

3.       craft plat form, thickness gauge rack, tension rolls

e.       rolls part：

1.      1#tandem, working rolls shaft diameter X rolls surface width：Ф175X480 mm  material type 86GrMoV7, compound needle roller bearing 2 functions

2.      2#tandem, 3#tandem, working rolls shaft diameter X rolls surface width：Ф145X480 mm  material type 86GrMoV7, compound needle roller bearing 2 functions

3.      back up rolls shaft diameter X rolls surface width：Ф450X450 mm  material type 9Gr2Mo, bearing: FCD

For rolling mill only

4.    bearing lubrication type:  dry oil lubrication

5.      back up rolls balance type：hydraulic balance

6.      rolls changing type：hydraulic changing

f.       main transmission part

1.      main motor model: Z4，power：400kW

2.      main reducer: ZLY400

3.      Herringbone gear box：1#tandem，center distance A＝230mm，2#tandem, 3#tandem, center distance A＝690mm

4.      reducer lubrication：thin oil lubrication

5.      transmission shaft：universal shaft, 1#tandem, SWC220, 2#tandem, 3#tandem, SWC280

6.      foundation：2 parts(part 1: motor, reducer, 2 box, part 2: stand)

g.      expanding coiler: rectangular pyramid hydraulic coiler

1.      cone diameter       Φ508mm*550

2.      expanding amount：       20mm

3.      hydraulic pushing, hydraulic car, hydraulic expanding, hydraulic cylinder diameterФ320

4.      max coil weight    ≤3500kg

5.      coiling tension ≤3500kg

6.      main motor model: Z4，power：185kW

7.      reducer: ZQ750

h.     craft lubrication device：(prepared by buyer)

i.        hydraulic system controlled by 1 hydraulic station,

function：energy accumulator，electro connecting pressure gauge，Unloading device， filter device, liquidometer and system pressure control。

j.      thickness gauges: （prepared by buyer）                          1set

k.      tension gauge: 

With 1 ton tension gauge  2untis, max tension 5 tons, max coiling tension 3 tons, to ensure each stand flow/s constant equal tension.

l.        Electrical control system: adopts EURO 590 system(Two bridge four quadrants weak magnetic speed control), relay control system use PLC, need 8 I/O points, communicate with module digital circuit, has A/D,D/A transfer module, tension adjusting, coiling controlled by constant tension with coil diameter changing, there’s operation boxes at stands, can show current, speed, tension and thickness, and simple thickness auto control function.