Electric Arc Furnace and Hot Rolling Mill(Strip)
1 General specification
Date of operation 2009. 07.01, Shutdown : 08. 2019 Reason for shutdown Management deterioration Products capacity 3.0 million ton / year.
Steel kind AHSS 80, API, SPFS590, High carbon steel, etc.
1.1 Facility configuration
EAF 160ton 2units Danieli, Tenova
LF 160ton 2units Danieli
CCM 3.0Million ton / year 2units Danieli
T F 505ton / hr. 160T 2 unit Bricmont
HRM max. 760m / min. Mitsubishi-Hitachi
SPM
Utility max. 255m / min.
etc. SPCO
2 Facility specification
2.1 Electric Arc Furnace
Type AC Consteel, EBT
C.O.P control, Preheating : 300°C, Hot heel : 60~80ton/heat TTT : 46min./ heat
Capacity 160ton / heat 2units
Transformer 140MVA 2units
Electrode arm size 28inch Conducive arm : cupper
Furnace dia. 7.700mm
Oxygen injector 2400Nm3 /hr. x 4 ea
Carbon injector 50kg / min. x 2ea
C/O2 injoctor 3,700 Nm3 / hr. , 45kg / min. x 1ea
Lime injectot 200kg / min. x 1ea Ladle car
2.2 Laddle Furnace
Type Twin station, TTT : 46min. / heat
Capacity 160ton / heat
Transformer 34MVA
Electrode arm size 18inch
Temperature rising 4.5°C / min.
VD-OB Twin station
2.3 Continuous Caster
Type Vertical curved caster, 2 units
Radius 5,000mm
Slab size 70, 85mm x 900~1,650mm
Casting speed 70mm slab : 6.0m/min., 85mm slab : 4.6m/min.
Mould Length : 1,200mm
Strand Segments : 9ea
Dummy bar Bottom feeding 85mmT x 1,335mmW x 10,100mmL
Ladle turret 160ton(max.190ton)
Tundish 38ton(max.42ton)
Tundish car Moving speed : 2m~20m/min., Lifting speed : 300m/min. Oscillator Frequency 0~450cycle / min. Stoke : 0~10mm
Shear Pendulum type, Capcity : 13,000KN max., Knife length : 1,900mm
2.4 Hot Rolling Mill
Type Pair cross type
Product size 1.2mmT~16mmT x 900mm ~1,650mm x max. 30ton
Product capacity 3.0million ton / year
Tunnel Furnace 505ton A line:219.25m, B line:176.8m, Shuttle ferry type
Slab size : 70mmT / 85mmT x 900Wmm / 1,650Wmm Fuel : LNG
Length : A-219.25m, B-176.8m, out put temp.: 1,150°C
Vertical edger Roll dia.: 580mm~640mm
Roughing mill 4high x 2stand, RSB, AGC, Pass linner, Pinion Crop shear
Finishing mill 4high x 5stand, FSB, AGC, Step liner, Pass liner,Looper Line max. speed : 760m/min.
Run out table 12 banks, top : laminer flow, bottom : spary
Down coiler Pinch roll, unit roll, mandrel
2.4 Skin pass mill
Type Single stand 4high
Product capacity 1.2million ton
Mill specification Strip thickness : 1.0mm~6.0mm Strip width : 900mm~1,630mm
Line speed : 1.0mm - 500m/min., 6.0mm - 255m/min.
Coil dia. Inn : 762mm, out : 1,000mm~2,100mm, weight : 5,000kg~30,000kg Pinch roll & leveller
Roll shop Buck up roll grinder : 1 unit, Work roll grinder : 3unit
2.5 Water treatment facility
Pump 228unit
Filter 46unit
Cooling tower 13sets
2.6 Substation
Transformer 154KV / 3,3K, 220MVA 2unit, 200MVA 1unit
Generator 6,6KV / 2,500KVA 2unit Condenser & SVC
