61” x .008”- .177” (1550mm x 4.5mm - 3.0mm) Automatic Precision Slitting Line (Used)

Technical Specification:

1.    Basic technical parameters

1.1) Coils

a)   Material of coils: medium & high carbon pickled hot rolled steel coils etc.

    Steel grade: AISI1050,1075, 1095, etc.

b)   Strip thickness: .059” ~ .177” (1.5mm～4.5mm)

c)     Strip width: 35.4” ~ 61” (900mm ～ 1550mm)

d)   Inner diameter of coils: Φ 29”-30.7” (740mm-780mm)

e)   Outer diameter of coils: Φ 55”-75.8” (1400-1925mm)

f)    Max. coil weight: 55,116 Lbs. (25000Kg)

1.2) Machine

a)   Slitting capacity: 3.3”-4.4" (1.5mm-2.0mm),

max 12 strips, 40-60m/min; 4.4”-6.6” (2.0-3.0mm),

max 9 strips, max 30 - 50m/min; 6,716 Lbs. .128”-.177” (3.5mm - 4.5mm)

max 6 strips, max 25-40m/min.

Minimum slit strip width: 1.26” (32mm)

b)   Slitting speed: max 60m/min

c)   Total installation power: about 350KW

d)   Land occupation: about 30m length, 9m width

e)   Input direction: Right to Left

f)    Power source: 480V, 60Hz, 3Ph.

2.      Working process

Coil-loading—— Double cone mandrel uncoiling——Coil-end-feeding & shoveling—— Double-roller pinch feeding/five-roller leveling — — End-cutting----Transmission table — — Strip-aligning Disc

slitting — — Scrap reeling — — Hole Accumulator — — Pre-separator / Tensioner — — Separating, Recoiling——Coils-discharging——Hydraulic control——Electric control

3.       Description of equipment

3.1   Coil loading car

a)  Structure: Four wheels, car body made by welding

b)  Driving motor: 2.2kw cycloid pin-wheel motor

c)   Up-down movement driving: hydraulic cylinder Φ 7.9”-27.6” (200×700mm)

d)  Up-down moving distance: 27.6” (700mm)

e)  Max loading weight: 55,116 Lbs. (25000Kg.)

3.2  Double-mandrel Uncoiler:

Structure and working style: double cone mandrels; To make sure coil on centerline of the slitting line, the double mandrels bidirectionally move toward or faraway each other, or one of the mandrel bi-directionally move toward or faraway to the other, by hydraulic cylinder(Φ125×800mm).

a)   Min diameter and max diameter of cone mandrel: Φ740-780mm.

b)   Braking style: pneumatic pressure-regulating brake

c)    Applicable coil width: 35.4”~ 61” (900mm ~ 1550mm)

d)   Max. coil diameter：75.8” (1925mm)

e)         Max coil weight：55,116 Lbs. (25000Kg)

3.3     Coil-end feeding & shoveling equipment

a)    Structure: welding assembly with steel plates, up-down movement by hydraulic cylinder.

b)    Two sets of Φ 3.9” ~ 19.7” (100mm × 500mm) hydraulic cylinder

c)     Traction wheel: Φ 11.8” ~ 19.7” (300mm × 500mm), NBR rubber wheel

d)    Driving motor for traction: 7.5kw cycloid pin-wheel motor

e)    Coil-head straightening up device: double pillar guide, hydraulic press straightening roller on coil head with shoveling plate support from under, to send coil head enter pinch rolls.

f)     Straightening roller: Φ 3.9” ~ 31.5” (100mm x 800mm),

g)    hydraulic cylinder: Φ 4.7” x 19.7” (120mm × 500mm)

h)    Shoveling structure: welding assembly with steel plates, two tongue-shaped plates

(big one to move up-and-down, small one to expand and contract

i)      Hydraulic cylinder for big tongue up-down movement: Φ 3.2” x 15.8” (80mm × 400mm)

j)      Hydraulic cylinder for small tongue expansion Φ 2.5” x 15.8” (63mm×400mm)

3.4      Double-roller pinch feeder, Five-roller leveler

a)    Welding assembly with steel plates, double-roller pinch feeding the coil strip.

b)    Feeding roller and leveling roller: Φ 6.3” x 65” (160mm×1650mm)

c)  Material of feeding roller and leveling roller: 40Cr, hard chrome plating, drive feeding roller covered with NBR rubber

d)    Oil cylinder for up-down moving of feeding rollers: two pcs, Φ 3.9” x 3.9” (100mm×100mm)

e)    Up-down moving of leveling rollers: worm gears, 2.2KW cycloid reducer

f)      Feeding and leveling power: 37KW DC motor and reducing gearbox connected with universal joints

3.5        Hydraulic shear

To cut off the redundant end of hot rolled coils or cut in midway of coil strip, here install one hydraulic shearing equipment for max.83” (1600mm) wide and .197” (5mm) thick strip.

3.6        Transmission Roll Table

2m long 165m wide roll table, passive rollers Φ5.5” x 63” (140mm x 1600mm) are connected by sprockets and chains. The pinch feeding & leveling rollers send coil head passing over the roller table.

3.7        Aligning equipment

a)    Structure: vertical rollers to restrict the progressing position of strip, while horizontal rollers to press strip.

b)    Vertical rollers: three pairs, Φ 3.5” x 4.9” (90mm×125mm), high-frequency quenching

c)     Horizontally press roller: Φ 3.9” x 65” (100mm × 1650mm)

d)    Hydraulic cylinder for up-down moving of press roller: Φ 3.1” x 3.9” (80mm × 100mm)

e)    To adjust one side of vertical rollers by double lead screws with adjusting range: 23.6” -63” (600mm-1600mm)

3.8          Disc Slitting Machine

a)    Structure: disc cutters circle double spindles tight, and the spindles installed on support stand.

b)    The spindle to install disc cutters: Φ 9.5”-65” (240mm × 1650mm)

c)     Material of the spindle: 40Cr, forging and tempering, medium-frequency quenching, hard chrome plating, fine polishing.

d)    Disc cutter: D380×d250×T20/15mm

e)    Material of disc cutter: H13K, hardness after quenching HRC59～61°

f)     Driving style: 110KW DC motor, matched with speed reducer, gearbox and universal joint.

g)  Control on DC motor: American Parker 590 controller

h)    Pressing-down of shearing spindle: 2.2KW cycloid pin-wheel motor with worm gear box

i)      To change disc cutter: hydraulically Φ 2.5”- 17.7” (63mm × 450mm) driven, one stand of the disc shearer outward move until disc cutters can be installed

j)      slitting speed: ≤60m/min

3.9        Scrap reeler

a)    Structure: two scrap reelers, with one on each side of the slitting line

b)   Each reel: Φ 17.7”- 13.8” (450mm × 350mm)

c)  Each reel is driven by L180 torque motor.

d)    Scrap-discharging style: hydraulically drive the scrap creel shrink, then can take scrap bundle down.

e)    Scrap collecting style: hydraulically drive the scrap guide rod to left-right move so as creels to wind up scrap in order.

3.10      Hole Accumulator

a)     Structure: hole with cement walls, one turnover plate to more or less cover the hole, so as to accumulate some strip in the hole.

b)    Hole dimension: 3mL×1.8mW×3mH

c)    Composition of turnover plate: to weld square steel pipes to set up a frame, lay wearable plastic plates on the frame; at the both edges, sliding roller respectively.

d)    Overturning movement of turnover plate is driven by hydraulic cylinder (Φ 3.2” x 19.7” (80mm × 500mm)

3.11     Pre-separator and Tensioner

a)    Pre-separating shaft: Φ 3.5” x 65” (85mm × 1650mm) Pre-separating discs: Φ 7.9” x .236” (200mm × 6mm), 65Mn quenching treatment

b)    Manually move outward the stand of one side up to be able to install pre-separating discs

c)     A pair of horizontal press roller: Φ 3.9” x 65” (100mm × 1650mm)

d)    Hydraulic cylinder for up-down moving: Φ 3.2” x 3.9” (80mm × 100mm), pcs

e)    Tensioning style: woolen pad style and five roller style

f)      Wool pad style: press the upper beam of tensioner stand down, put wooden plate and wool felt between upper and down beams. The pressing-down strength is by two Φ 3.2” x 5.9” (80×150mm) hydraulic cylinders, and strength is adjustable.

g)    Five roller style: 2 over 3 roller structure, press-down strength is by two pcs Φ 3.2” x 5.9” (80×150mm) hydraulic cylinders.

h)    Balanced length-measuring roller: Φ12.6” x 65” (320mm×1650mm), hard chrome coating.

3.12     Recoiler and Portal Separator

a)    transmission by gearbox, expansion and clamping of recoiler is driven by hydraulic cylinder Φ 5.5” x 3.9” (140mm×100mm) through slanting slider.

b)    Recoiling block: Φ 20” x 65” (508mm × 1650mm)

c)    Strength for expansion of recoiler: hydraulic cylinder Φ 6.3” x 3.9” (160mm × 100mm).

d)    Hydraulic coils pusher: driven by hydraulic cylinder Φ 3.2” x 65” (80mm × 1650mm), together with coils discharging car, push the slit coils out. The support bracket of recoiling shaft: steel structural component, hydraulic cylinder Φ 3.2” x 13.7” (80×350mm)

e)      Strips-separating shaft: Φ 3.4” x 65” (85mm × 1650mm)

f)        Separating discs: Φ 7.9” x .236” (200mm × 6mm), 65Mn quenching treatment

g)      Pressing-down of the separating shaft adopts portal frame by two pieces hydraulic Φ 3.2” x 19.7” (80×500mm), strength adjustable

h)      Recoiling power: DC 160KW motor

i)         DC motor control: Parker 590 controller

j)         Recoiling speed: max 60m/min

k)       Max recoiled coil weight: 55,116 Lbs. (25000kg)

3.13   Coil-discharging car

a) Structure: four wheels, car body by welding

b)    Driving motor:2.2KW cycloid pin-wheel motor

c)     Up-down movement driving: hydraulic cylinder Φ 7.9” x 27.6” (200mm × 700mm)

d)    Up-down moving distance: 27.6” (700mm)

e)    Max. loading weight: 55,116 Lbs. (25000kg)

3.14   Hydraulic system

a)    One set of hydraulic station, control valves, oil pipelines

b)    Pressure: 16Mpa

c)    Power 11KW-4（Ⅵ）

d)    Oil volume of oil tank: 450L Taiwan Vitory hydraulic valves

3.15   Electric Control

a)    Parker 590 DC speed controllers for DC motors of pre-leveler, slitter and recoiler.

b)    One set of electric control cabinet, two sets of manipulation panels. Schneider electric parts

3.16   User self-prepare：

a)    General switch of electric power, electric wires, cables and conduits

b)    Air supply system: Air source Q=0.9m³/min P=0.8Mpa

c)     Lubricating oil, hydraulic oil

d)    guard rails