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June
2006 |
Novel Advancements in Solid-state Magnet Control Technology
Andrew Thexton, Cableform Inc., Troy, Va. (athexton@cableform.com)
Advancements in magnet control technology allow for increased throughput, greater reliability and decreased maintenance. Features added since the installation of the first Cableform OptimizerTM magnet control are described.
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Blast Furnace/Steelmaking Coordination Improvements at Mittal Steel USA – Sparrows Point
Michael S. Panzeri (left), division process manager; William S. Howanski (right), BOF area manager; and Christopher D. Ryan, automation engineer, Mittal Steel USA – Sparrows Point, Sparrows Point, Md. (michael.panzeri@mittalsteel.com, bill.howanski@mittalsteel.com, chris.ryan@mittalsteel.com)
The primary operation of Mittal Steel USA – Sparrows Point requires up-to-the-minute information to reach optimum productivity and efficiency. This article
discusses communication methods that were developed to better coordinate the operation. |
Reducing Crane Wheel Failures at the Midwest Plant of U. S. Steel
Arthur J. Wright, mechanical supervisor, United States Steel Corp. Gary Works, Midwest Plant, Portage, Ind. (ajwright@uss.com)
The majority of EOT cranes at U. S. Steel’s Midwest plant were built to AIST specifications, with capacities ranging from 10 to 75 tons. This article details how crane wheel failures were reduced at the plant. |
Challenges Facing the Steel Industry in Attracting and Retaining Engineers
Kent D. Peaslee, professor and associate chair — undergraduate studies, Department of Materials Science and Engineering, University of Missouri–Rolla, Rolla, Mo. (kpeaslee@umr.edu)
Recent consolidations and technology improvements have changed the steel industry, presenting a greater need for technically trained employees and engineers. This article explores the current challenges and strategies of bringing more engineering graduates into the industry. |
How the International Steel Industry Attracts, Trains and Retains Talented People
David Naylor, project director, steeluniversity.org, International Iron and Steel Institute, Brussels, Belgium (naylor@iisi.be)
This article reviews the variety of initiatives by the steel industry to attract graduates, particularly in
metallurgy, materials science and engineering disciplines. Progress on the International Iron and Steel Institute’s steeluniversity.org is also included. |
Inclusion Characterization and Thermodynamics for High-Al Advanced
High-strength Steels
Hongbin Yin, staff research engineer, Mittal Steel Research and Development, East Chicago, Ind. (hongbin.yin@mittalsteel.com)
Fundamentals of steelmaking and casting of high-Al advanced high-strength steels are summarized. Al-O equilibrium on the high-Al side is discussed, casting nozzle plugging is analyzed, and further discussion focuses on thermodynamic calculations. |
Thermodynamic Description of Liquid Steels and Metallurgical Slags by a Generalization of the “Central Atoms” Model
Jean Lehmann, Frederic Bonnet and Manuel Bobadilla, Arcelor Research SA, Maizières-lès-Metz, France (jean.lehmann@arcelor.com, frederic.bonnet@arcelor.com, manuel.bobadilla@arcelor.com
This paper presents the unification of two models used by Arcelor Research to represent the properties of metallurgical slags on one hand and of liquid metallic phases on the other hand. These two models are respectively the cell model (or IRSID slag model) and the central atoms model as it has been introduced by Lupis and Elliot. The new prospects brought by this unification for the modeling of these two phases are explained. In particular, for the metallurgical slags, they arise from a more accurate description of the short-range ordering. Concerning the liquid steel, the model has been assessed on the system Fe-Al-Cr-Mn-Ni-Si-Ti-Ca-Mo-Cu-Nb-C-N-H-O-P-S, and applications to nitrogen, sulfur and oxygen in various steel grades show that the central atoms model represents accurately multicomponent systems. |
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