nucor steel - sms · pdf filenucor steel is one of the leading steel producers in the united...
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NUCOR STEELPremium equipment for a leading steel producer in the USA
PLANT INFORMATION
Capacity 906.000 t of prime billets per year
Production mix
Equipped for billets
Currently producing
Steel grades
133 mm, 203 mm sq. 159 mm x 203 mm, 159 mm x 254 mm, 127 mm x 305 mm159 mm sq.160 mm x 229 mmCarbon / structuralSBQ capable
Key features Raw material charging: 100% steel scrap
PROJECT INFORMATION
Customer Nucor Steel
Location Texas, USA
Commissioning 2004
PARAMOUNT STEEL RECYCLING Setting new technological benchmarks for the steel industry
Nucor Steel is one of the leading steel producers in the United States of America. SMS Concast is proud to be the chosen supplier of all technological equipment, such as EAF, LF and CCM. Nucor Steel is the largest recycler of scrap metal in the USA. The company has a strong em-
phasis on quality, productivity and technological leadership. This is achieved by rigorous quality systems and a strong pursuit of innovation and technical excellence. The equip-ment used by Nucor Steel still sets new tech nological benchmarks for the steel industry.
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Electric arc furnace
Ladle furnaces
Continuous casting machine
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transport on rail
transport by over head crane
Material flow
ELECTRIC ARC FURNACE
The EAF at Nucor Steel has an EBT furnace in King-Pin design. The furnace features a full range of SMS Concast melting technologies, including CONSOTech oxygen injection and is charged with a single bucket.
Type
Heat sizeHot heel
Shell diameterShell volume
Electrode armsElectrode diameter
Electrode regulationTransformer
Conso injector
Scrap charges Tap to tap time
Power onHeats per day
ElectricOxygen
Natural gas Electrode
Single bucket charge, UHP AC full platform, EBT design 109 t nominal18 t6.7 m146 m3
Conductive type (Cu)610 mmDigital hydraulic type110 MVA4 x 6 MW– wall installation1 bucket26 to 30 min (avg.) 23 min (avg.)44
330 kWh/t28 Nm3/t4.0 Nm3/t1.2 to 1.35 kg/t
LADLE FURNACE
The LF is designed to perform full refining activities within the limited time frame imposed by the rapid tap to tap cycle of the EAF. To reduce the ladle han-dling time a twin station design was selected.
Type
Nominal ladle capacityElectrode arms
Electrode diameterElectrode regulator
Transformer Heating rate
Stirring
ElectricElectrode
Twin station, cantilever water cooled roof design91 tBus-tube type406 mm Digital hydraulic type16 MVA 4.5 K/minArgon (1/3), nitrogen (2/3)
20 kWh/t0.25 kg/t
CONSuMPTiON figurES
CONSuMPTiON figurES
CONTINUOUS CASTING MAChINE
The CCM among other innovations the modern SBQ-Billet Caster features the compact hydraulic oscillation, which allows remote adjustment of the oscillation parameters such as frequency, stroke and curve mode – both sinusoidal and non sinusoidal – for perfect surface quality.
Typeradius
Number of strandsStrand distance
Section range
Cast section range
Billet lengthLadle support type
Tundish car type
Tundish shapeTundish content
Mould typeCasting speed
Mould oscillation
CONVEX® 20-10.25 CCS8 m10.25 m51,300 mm133 mm sq. up to160 mm x 229 mm127 mm x 305 mm159 mm sq.160 mm x 229 mm4.3 - 14.6 m Turret with lifting / lowering and weighing system Dual cantilever with lifting / lowering systemDelta-type24 t (800 mm working level)CONVEX Technology®
1.0 - 4.0 m/minHydraulic short lever oscillation adaptable to each steel grade at casting time (remote controlled). Maintenance-free system with high rigidity and stability.
Secondary coolingWithdrawal
Dummy bar typeCutting device
Discharge
Cooling bed type
Billet marking machineMachine type
Digit heightAutomation
ConMax – Multi zone coolingConcast Continuous Straightening (CCS)Rigid retractableTorch cutting2-level with overhead cross transferHydraulic turnover with billet weighing system2 machinesConMark8 mmSMS Concast Level 2
Nucor Steel – TexasMinimill designed by
SMS Concast
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SMS Concast
Toedistrasse 9
8027 Zurich
Switzerland
Phone: +41 44 204 65 11
Fax: +41 44 202 81 22
www.sms-concast.chMEETING your EXPECTATIONS