October
2004 |
Danieli
Technology Forum 2004
Darlene
Fritz, editor, www.steelnews.com (dfritz@aist.org) |
Predictive
Maintenance of DC Drives on Process Lines
Dan
Laird, assistant professor of engineering technology, Youngstown
State University (dlaird@ysu.edu)
Strip
tension is the key variable in determining DC drive performance.
This paper provides an outline for conducting a DC drive coordination
study on a generic process line and how to develop the tension
profile. |
Development
of the Next Generation of Bath Hardware Materials
Ever J. Barbero, professor
and chairman, Dept. of Mechanical and Aerospace Engineering,
Carl Irwin, director — Industries of the Future–West
Virginia Program, and Xingbo Liu, research assistant professor,
West Virginia University, Morgantown, W.Va.; Vinod Sikka,
materials processing group leader, Oak Ridge National Laboratories,
Oak Ridge, Tenn.; and Frank Goodwin (pictured), vice president
of materials science, International Lead Zinc Research Organization,
Research Triangle Park, N.C. (ever.barbero@mail.wvu.edu)
A
frequent cause of line stoppage on galvanizing lines is pot
hardware problems. A cooperative program to improve pot hardware
materials and designs has led to significant cost savings
for companies that operate galvanizing lines, along with many
of their suppliers. |
Surface
Evaluation Methods for Coated Sheets at U. S. Steel Košice
Jozef Billy (left),
director of quality, Frantisek Šimcák (second
from left), head manager — innovation dept., Dagmar
Dadejova (center), CTS manager, Vladimir Kundracik (second
from right), research and development, and Anton Bobenic (right),
manager — quality, U. S. Steel Košice, Slovakia
(jbilly@usske.sk)
With its expanding production of galvanized sheets, organic
coated sheets and tinplates, USSK conducts surface evaluation
tests for plastic properties, friction and wear. New criteria
for tinplates are described, including evaluation of earing
on double reduced sheets. |
The
New No. 3 Galvanizing Line at Voest-Alpine Stahl
Gerald Riha, Josef Guggenberger
and Maximilian Kaiser, Voest-Alpine Stahl GmbH, Linz, Austria
(gerald.riha@voestalpine.com, josef.guggenberger@voestalpine.com
or maximilian.kaiser@voestalpine.com)
Construction of the newest galvanizing line at Voest-Alpine
Stahl involved the services of more than 150 suppliers. Details
of the project are provided, including general line layout,
capacity and equipment. |
Challenges
for Zinc-based Sheet Steel Coatings Production
Eduardo A. Silva, research
consultant — coated products, U. S. Steel Corp. Research
and Technology Center, Monroeville, Pa.; and Frank E. Goodwin
(pictured), executive vice president, International Lead Zinc
Research Organization Inc., Research Triangle Park, N.C. (esilva@uss.com
and fgoodwin@ilzro.org)
Hot dip
galvanizing lines have evolved in response to demands from
various industries. This article describes the current and
future challenges of zinc-based coatings production, as well
as the research efforts already under way. |
Applications
of the Crown and Shape Model in BlueScope Steel’s Western
Port Hot Strip Mill
Vladimir
Panjkovic, Greg Fraser and Daniel Yuen BlueScope Steel, Australia
Efficient control of crown and shape is essential
for profitable operation of a hot strip mill. Customers have
been placing stricter demands on the crown range, and poor crown
and shape control causes costly head-end cobbles and chew-ups
and quality problems with both hot and cold rolled coils. Reliable
mathematical models are key tools for better dimensional control
in hot strip mills. BlueScope Steel recently upgraded and validated
its model for crown and shape prediction for its Western Port
hot strip mill. The model has been used frequently since then
to assist in decision making on operational practices and troubleshooting.
The addition of a graphical user interface made it accessible
to a wide range of users and suitable for training. |
|
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