Description:

CEM facilities specification

PRODUCT
Size
Thickness: 0.8~12.7mm
Width: 900~1,350mm
ULC, LC, MC, HC, HSLA, AHSS, API, Sicon steel, etc.

Steel making plant
(EAF, LF, VTD)

Electric Arc Furnace
. No.1,2 EAF
Maker: NSC (Japan, `96~`15.3)
. Revamped: SMS (Germany, `16)
Furnace type: Twin shell (1Arm, 2Shell type)
Tapping: EBT(Eccentric bottom tapping)
Capacity: Nominal 130ton/heat
Maximum 150ton/heat
T.T. time: 50min/heat
Hot heel: Nominal 40ton
Maximum 60ton
TR Capacity: DC, 51MVA x 2 sets
Electrode
. Upper: 28inch x 1rod
. Lower: Multi pin type
Dust ollector: Direct and secondary
dust concurrent collecting
Tilting
. Hydraulic cylinder driven
. Tilting angle: De-slagging side: -5º
Tapping side 25º

Ladle Furnace
. No.1,2,3 LF
Maker: NSC (Japan)
Furnace type
. No.1,2 single (`96~`19.2)
. No.3 twin shell (Manufactured in `96, installed in `01~`19.2)
. Ladle transferring car and water cooling roof
Capacity: Nom. 130ton/heat, Max. 150ton/heat
T.T Time: 50min/heat
Power TR
. Capacity 22MVA
. Rated current 40KA
. Rated voltage: 318V
Heating rate: 4℃/min
Electrode: 16 inch x 3 rods, PCD: 900mm
Roof & electrode lifter: Hydraulic cylinder
Free board: 800mm at new ladle

Vacuum Tank Dagasser
. No.1,2 VTD
Maker: Demag (Germeny, `96~`19.2)
Furnace type: No. 1,2 single
Capacity
. Nominal 130ton/heat
. Maximum 150ton/heat
Vessel height: 5,500mm
Vessel diameter: 6,200mm
Vacuum pump
. Stage steam ejector vacuum pump x 3
. Water ring pump x 3(4stages)
Heat radiation cover
. Inner D3,300mm, Out D3,600mm, H 1,200mm
. Cover lift cylinder: Cap. 115.000daN, Str. 1,000mm
. Up & down speed: 1m/min
Lance
. D160mm, L6,500mm
. O2 Capacity: Normaly 1,100~1,200Nm3/h
Maximum 1,500Nm3/h

CEM
(Caster~Down coiler)

Caster
Maker: POSCO (Korea, `09~`19.2)
Slab Size
. Thickness: 81~100mm
. Width: 900~1,360mm
Casting speed: ~ 8.0m/min
Metallugical length: 20m
Mold length: 1,200mm
Ladle/tundish capacity: 130ton/50ton
Facilities
. Ladle turret 2sets, Dummy bar & car, Tundish & car are for sale.
. Mold, Top zone, Bender, Segment are excluded from sale.
Roughing Mill
. RSB(Roughing mill scale breaker)
Maker: POSCO (Korea, `14~`19.2)
Type: Movable Top & bottom headers
No. of headers: Top & bottom 1set
Actuator: Geard motor
Water pressure: Maximum 220bar

Roughing Mill
. RM(Rouging mill)
Maker: Demag (Germany, `96~`19.2)
Type: 4-High tandem mill x 3 stands
Rolling force: 2,500ton/stand
Roll Opening: Approx. 120 mm (with max. roll)
Bending Force
. Increase/Decrease WR bender ±1,500kN/chock
Roughing Mill
. PS(Pendulum shear)
Maker: Demag (Germany, `96~`19.2)
. Revamped: Danieli (Italia, `09)
Slab dimension
. Max. slab thickness: 116mm
. Min. transfer bar thickness: 30mm
. Max. slab width: 1,350mm
. Min. slab temperature 825℃
Maximum cutting force: 15,275kN
Cutting torque: 1,833kNm
Maximum cutting speed: 20 m/min
Shear drive
. Motor power: 1,000 Kw x 2sets
. Motor base speed: 1,000 rpm
Shear reducer: i=1/40
Roughing Mill
. CS(Crank shear)
Maker: Danieli (Italia, `09~`19.2)
Type: Eccentric shaft type
Max cutting speed range: 18 ~ 64m/min
Eccentricity: 200mm
Eccentric diameter: 600mm
Cutting force: 15,000kN
Shear capacity
. Max material thickness: 35mm
. Max material width : 1,350mm
. Min cutting temperature: 825℃
AC Motors Main
. Power: 1,200kW x 2sets
. Speed: 1,500/2,500 rpm
Roughing Mill
. PP(Pusher & piler)
Maker: Demag (Germany, `96~`19.2)
Maximum piling weight: 45ton
Roughing Mill
. IH(Inductive heater)
Maker: POSCO & D.K.K. (Korea, Japan. `96~`19.2)
Heater type: TFIH, LFIH Mixed
Material Dimension
. Thickness: 10~25mm(Some coils 25~30mm)
. Width: 850~1,350mm
Consist of
. Power supply systems
. Inductive heater (TF type by POSCO is excluded from sale.)
. Insulated disk roller table(17sets × Φ250 × 1,500mm)
TFIH(Transverse Flux Induction Heater)
LFIH(Longitudinal Flux Induction Heater)

Roughing Mill
. MCB(Mandrel coil box)
Maker: Danieli (Italia, `09~`19.2)
Material dimension
. Thickness: 10~25mm
Width: 900~1,350mm
Frunace
. Operating temperature: 1,100℃
. Maximum temperature: 1,150℃
Burner
. Capacity: 756,000 kcal/hr
. Fuel: COG for main, NG for pilot burner
Carousel disk
. Quantity: 2sets
. Drum diameter: 5,100mm
. Drum Face: 2,150mm
Mandrel
. Quantity: 2sets
. Drum Diameter: 1,350mm
. Slot Length: 1,650mm
. Slot Opening: Approx. 80 mm

Roughing Mill
. Leveller
Maker: Danieli (Italia, `09~`19.2)
. Revamped: POSCO (Korea,`13)
Roll: D400mm x L1,500mmx 4sets
Motor: 75kW x 1,500rpm
Gear ratio: i=1/16

Finishing Mill
. Crop Shear
Maker: Mitsubishi Hitachi (Japan, `96~`19.2)
Type: Rotary Drum Type Differential Speed Cutting
Material dimension
. Material: SS400 Grade
. Temp: 800~1,080℃
. Width: Maximum 1,350mm
. Cutting Thickness: Maximum 30mm
Shearing force: Approx. 5000KN
Cutting Cycle: Minimum 5.0sec
Motor: 2 set, AC 370kW, 870rpm (350% O.L 10Sec)

Finishing Mill
. FSB(Finishing mill scale breaker)
Maker: POSCO (Korea, `14~`19.2)
Descaling Header
. 300 bar Descaling Header(Entry) Top & bottom 1set
. 400 bar Descaling Header(Delivery) Top & bottom 1set
Header height adjust operation
. Operation: Hydraulic Cylinder operated type (W/S, D/S)
. Hydraulic Cylinder x 2 per header
. Movable top header, Fixed bottom header
. Up Down Stroke: Approx. 110mm

Finishing Mill
. FM
Maker: Mitsubishi Hitachi (Japan, `96~`19.2)
Type:
. F1: 4-high mill
. F2~F4: 4-high pair cross mill
. F5: 4-high work roll shift mill
Rolling force: 3,500ton/stand
Roll opening
. F1~F3 : Approx. 70 mm (with new roll)
. F4~F5 : Approx. 50 mm (with new roll)
Bending force
. Increase: F1~5, 1,200kN/chock
. Decrease: F1,F5, 900kN/chock

Down Coiler
. ROT(Run out table)
Maker: Mitsubishi Hitachi (Japan, `96~`19.2)
Run out table
. Type: Individual Driven Hollow Roller Table
. Roller Size: D310mm x L1,500mm
. No. of rollers: 189 rollers
. Table Speed: Maximum 798 mpm
. Roller cooling: External & internal cooling mixed
Strip cooling system
. Type: HDC x 6zones + Laminar bank x 10 zones
. HDC flow: Approx. 6,072m3/hr
. Laminar flow: Approx. 12,620m3/hr

Down Coiler
. HSS
Maker: Ishikawajima-Harima Heavy Industries (Japan, `11~`19.2)
Type: Eccentricity type
Cutting strip: 0.8 ~ 3.0mm
Cutting speed: Max. 798mpm
Drum drive: Driven by one motor through pinion stand
. AC 1-90kw x 835rpm
. Reduction unit: i=1/2.324

Down Coiler
. DC(Down coiler)
Maker: Ishikawajima-Harima Heavy Industries (Japan, `11~`19.2)
Type: Fixed Type, Hydraulic 3-Unit Roll Coiler
Material dimension
. Thickness: 0.8~12.7mm
. Width: 900~1,350mm
. Weight: 24ton
Coiling speed: Max. 798mpm
Coil outside diameter: 1,000~1,950mm

Caster
. Thinckness gauge
Maker: IMS (Germany, `12~`19.2)
Model: TIMG-26
- Range: 60~120mm (±0.5%)
Source: Cs-137, 1850GBq
Detector: Ion KG60/CS x 19
Position: After caster

Roughing Mill
. Profile Meter
Maker: IMS (Germany, `04~`19.2)
Model: TIMG-16
- Range: 10~34mm (±0.5%)
Source: Cs-137, 1850GBq
Detector: Ion KG60/CS x 13
Position: After RM