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January 2009
Vol. 6, No. 1
Process Control & Automation Technologies
About the Cover
Control room supervisor Ken Enoch monitors the stoves in the control room of Severstal Dearborn’s newly rebuilt C blast furnace. Photograph courtesy of Severstal Dearborn. Photographer: Charles Copeland, Ironmaking Technology Group.
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Integration Technology at ArcelorMittal Dofasco Inc.
Bob Barna, senior specialist, Information Systems Group, ArcelorMittal Dofasco Inc., Hamilton, Ont., Canada (bob.barna@arcelormittal.com)
ArcelorMittal Dofasco recognized the key roles integration and related technologies play in an IT strategy that supports a manufacturing environment. This paper highlights the lessons learned and success in the modernization of the company’s information systems. |
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Medium Voltage Drive Application at U. S. Steel Lorain Tubular Operations, No. 3 Seamless Mill
Michael A. DeCarli (left), TM GE Automation Systems LLC, Salem, Va. (michael.decarli@tmeic-ge.com), and Richard M. Baker (right), East Region Engineering, United States Steel Corporation, Mon Valley Works – Irvin Plant, Dravosburg, Pa. (rmbaker@uss.com)
In 2006, the No. 3 seamless tube mill at U. S. Steel Lorain upgraded the constant speed synchronous motor powering the High Mill. This paper reviews details of the application process required for the mill upgrade, particularly the differing torque responses. |
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Plant Vehicles Tracking With GPS-DGPS-GPRS Technologies
Corrado Iorizzo (left), TiQ-Industrial Ltd., London, United Kingdom (corrado.iorizzo@tiq-industrial.co.uk); Leonardo Speranza (center), ILVA SpA, Taranto, Italy (leonardo.speranza@rivagroup.com); and Alessandro Lenardon (right), TiQ Srl, Milan, Italy (alessandro.lenardon@tiq.it)
Managing the logistics of the ILVA Taranto, Italy, plant — with about 150 miles of rail, 50 trains and 1,700 cars — is an enormous challenge. An integrated system was developed that can track the trains, prevent damage, aid in maintenance planning and support the overall daily operations. |
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Quality Aspects of HPH® Annealed Steel Strip
Richard Fielder, LOI Inc., Pittsburgh, Pa. (rfielder@loiinc.com); Peter Wendt (pictured), director of sales, and Frank Maschler, LOI Thermprocess GmbH, Essen, Germany (peter.wendt@loi-italimpianti.de, frank.maschler@loi-italimpianti.de)
Rolling mills that have focused on the problem of stickers and the processes that produce them have been able to reduce the average share of stickers to less than 1%. This article discusses the various types of stickers, the mechanisms that produce them and the precautions that can be taken to prevent their occurrence. |
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EAF Energy Optimization at Nucor-Yamato Steel
Omar Quintanilla (left), regulation engineer, Nucor-Yamato Steel Co., Armorel, Ark. (oquintanilla@nucor-yamato.com), and Guillermo Fernandez (right), technology manager, AMIGE International, Monterrey, México (gfernandez@amige.com)
When Nucor-Yamato Steel decided to optimize its EAF operation, new SmartFurnace modules were added to the SmartARC program to control the burners, carbon injection, furnace pressure and furnace balance. The results of the project are presented. |
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Choosing the Correct Front-End Technology for a Low-Voltage AC Drive System
Donald J. Kosnik, product manager, Avtron Industrial Automation Inc., Independence, Ohio (dkosnik@avtron.com)
Front-ends can have a significant impact on electrical and process functions of a low-voltage AC drive system. This paper investigates various existing technologies and the considerations in choosing the correct front-end on several steelmaking processes. |
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Toward Integrated Ladle Metallurgy Control
K.J. Graham (formerly of McMaster University), Materials Institute, McKinsey & Co., Montreal, Que., Canada (kevin_graham@mckinsey.com), and G.A. Irons, Steel Research Centre, Dept. of Materials Science and Engineering, McMaster University, Hamilton, Ont., Canada (ironsga@mcmaster.ca)
During the last 50–60 years, considerable interest has been focused on the kinetics of sulfur removal from iron and steel.1–8 Key findings from these kinetic studies have demonstrated that sulfur transfer from metal to slag or vice versa is: (i) coupled with the oxidation of other species in the melt and (ii) electrochemical in nature. Efforts to quantitatively describe the observed experimental works have resulted in several theoretical formulations. |
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