May
2005
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Fuel
Savings and Reduced Emissions: Experience From 80 Oxy-fuel
Installations in Reheat Furnaces
Per Vesterberg (left),
product manager — rolling mills and forge shops, Joachim
von Schéele (center), customer segment manager —
steel industry, foundries and recycling, Market Development
Metallurgy Dept., Linde AG, Gas Div., Sweden (per.vesterberg@linde-gas.com,
joachim.von.scheele@linde-gas.com); and Grzegorz Moroz (right),
application engineer — iron and steel, recycling, Linde
Gas LLC, Cleveland, Ohio (grzegorz.moroz@us.linde-gas.com)
Since 1990, Linde Gas has applied oxy-fuel solutions in 80
furnaces in rolling mills, forge shops and annealing lines.
Results have shown substantial reductions in fuel consumption
and emissions, along with more uniform heating and increased
throughput. |
Stopping the Million-dollar Giveaway
James M. Cruikshank,
maintenance analyst, U. S. Steel Gary Works, Gary, Ind. (jimcruikshank@hotmail.com)
An
effective ultrasonic leak detection program can stop millions
of dollars’ worth of compressed gases from slipping
away undetected. Techniques to locate, identify and quantify
compressed gas leaks are
discussed, along with the need to prioritize repairs. |
Energy Savings — DC Digital Versus DC Contactor
Hoist Control Systems
Randy Creech, The Electric
Controller and Manufacturing Co. LLC, Columbia, S.C.
Installing
a DC digital hoist control has an impact on the electrical
and mechanical systems of a crane. This case study focuses
on the maintenance savings over a year’s time on a slab
yard crane after converting the hoist from DC contactor to
DC digital control. |
Dynamic
Machine Gap Control at the ISG Sparrows Point No. 1 Caster
Richard E. Fash (left),
Peter J. Vielkind, Daniel J. Bederka and Timothy J. Lonsbury,
ISG Sparrows Point, Sparrows Point, Md.; Herbert L. Gilles
and Bülent Kocatulum, International Steel Group Inc.,
Homer Research Laboratories, Bethlehem, Pa.; and Jeffrey K.
Brower (right), general manager of technology and quality
assurance, Voest-Alpine Services & Technologies, Pittsburgh,
Pa. (rfash@intlsteel.com, jeff.brower@vastcorp.com)
Modifications
have improved the reliability, functionality and operational
performance of the dynamic gap control system on the No. 1
caster at ISG Sparrows Point. This article introduces those
modifications while providing tangible evidence to support
related research.
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