|
2010 November Issue
Full Table of Contents
Process Metallurgy & Product Applications
|
|
 |
About the Cover
Two 230-t converters were commissioned in 2010 by SMS Siemag at Taiwanese Dragon Steel Corp., part of China Steel Corp. Dragon Steel produces steel sec-tions, wire rod and beams, as well as various flat products. Each converter, the first of which is shown in operation, is equipped with a lamella suspension system, bottom stirrers and a robotized sublance. With the two converters onstream, Dragon Steel works will be able to produce 2.2 million tpy of steel.
Photo courtesy of SMS Siemag.
Full magazine available in the Members Only Area |
|
|
| |
Technical Features Table of Contents |
| 37 |
Quick Direct Tap at United States Steel Corporation’s Gary Works Q-BOP Shop
Yun Li (left), United States Steel Corporation Research and Technology Center, Munhall, Pa. (yli@uss.com); Alexander Monson (left center) and Justin Novotny (right center), Process Technology, United States Steel Corporation – Gary Works, Gary, Ind. (armonson@uss.com, jknovotny@uss.com); and Robert Rote (right), Minco (Midwest Instrument Co. Inc.), Hartland, Wis. (rrote@minco.net)
Quick Direct Tapping (QDT) eliminates conventional turndown testing for temperature, oxygen content and solid sampling. Since full implementation of the practice at Gary Works, the shop has achieved 97% QDT. Benefits realized from the practice are discussed. |
|
| 48 |
Utilization of Evaporation Waste Gas Cooling Systems to Counteract Rising
Energy Costs
Josip Kasalo, Oschatz GmbH, Essen, Germany (kasalo.j@oschatz.com)
In conventional waste gas cooling plants, the absorbed heat is emitted unused into the atmosphere. This steam can be used for various applications, such as steel degassing or heat and power generation. Integrating evaporation cooling plants into steel works reduces costs and preserves natural resources. |
|
59 |
Production Improvement of No. 2 BOSP at ESAI
Kamal Ughadpaga (left), steelmaking superintendent, Stephen Briglio (center), senior process analyst, and Giyasuddin Mohammed (right), process advisor, Essar Steel Algoma Inc., Sault Ste. Marie, Ont., Canada (kamal.ughadpaga@essar.com, stephen.briglio@essar.com, giyasuddin.mohammed@essar.com)
Essar Steel Algoma Inc. took steps to increase output while minimizing capital expenditures during the booming steel market of 2007–2008. This paper outlines modifications and improvements to the processes at the No. 2 BOSP that resulted in an increased and sustainable production rate. |
|
66 |
Avoiding Sloppy BOS Process Behavior
Mats Brämming (left), SSAB EMEA, Luleå, Sweden (mats.bramming@ssab.com), and Bo Björkman (right), Luleå University of Technology, Div. Extractive Metallurgy, Luleå, Sweden (bo.bjorkman@ltu.se)
A system for predicting slopping events, utilizing BOS vessel vibration measurement, was re-introduced at SSAB EMEA’s BOS plant in Luleå, Sweden. Improved slopping control was achieved by adjusting the lance position according to scrap quality and ore additions. |
|
77 |
Increasing the Refractory Wear Profile Control on the Steel Ladles at V&M do Brasil
H.G. Asth (top left), metallurgical engineer, L.F. Silva (top center), quality manager, L.P. Almeida (top right), primary and secondary metallurgy, and R.S. Sampaio (bottom left), consultant, V&M do Brasil (hudson.asth@vmtubes.com.br, luiz.silva@vmtubes.com.br, leandro.almeida@vmtubes.com.br, ronaldo@issbrazil.org); G.J. Cruz (bottom center), metallurgical technician — refractory, and G. Bastos (bottom right), metallurgical technician — refractory, Magnesita S.A. (geraldo.cruz@vmtubes.com.br geraldobastos@magnesita.com.br)
A significant improvement in steel ladle performance was achieved by statistical tracking of the main operational factors at V&M do Brasil. This paper describes specific developments that reduced the major wear factors and increased campaign life. |
|
132 |
Strategies for Third-Generation Advanced High-Strength Steel Development
Emmanuel De Moor, Paul J. Gibbs, John G. Speer and David K. Matlock, Advanced Steel Processing and Products Research Center, Colorado School of Mines, Golden, Colo. (edemoor@mines.edu, pgibbs@mines.edu, jspeer@mines.edu, dmatlock@mines.edu); and James G. Schroth, Research and Development Center, General Motors Corp., Warren, Mich. (james.g.schroth@gm.com)
Over the last several decades, a significant research effort has been directed toward the development of advanced high-strength steel (AHSS) grades. This research was driven mainly by the automotive industry’s needs for vehicle weight reduction to improve fuel economy, and increased passenger safety of vehicles. Increased regulatory pressure and consumer expectations regarding crashworthiness1–2 and fuel economy3–4 have resulted in extensive usage of AHSS grades in autobody structures. Projections are that the weight percentage of AHSS steel will increase to 35% by 2015, whereas mild steel will decrease from 55% (in 2007) to 29% in bodies and closures of light vehicles.5 The majority of international and domestic car makers are opting for increased usage of AHSS as part of their vehicle development strategies. |
|
|
|
Association for Iron & Steel Technology
186 Thorn Hill Road • Warrendale, PA 15086-7528 USA
(724) 814-3000 • Fax: (724) 814-3001 • memberservices@aist.org
AIST Privacy Statement • Trademarks and Ownership |
