September 2009
Vol. 6, No. 9 - Full Table of Contents
Long Products Technologies
About the Cover |
The cover photo shows a still-open pipe on the inlet roller table toward the roller cage of the tack welding machine in the Shanghai-based, large-diameter pipe mill of Baoshan Iron & Steel Co. Ltd. After forming of the open-seam pipe from the heavy plate, it will be closed by hydraulically adjustable roller beams and provided with a temporary MAG tack weld. Final welding using the suberged arc process follows on the welding machines before the pipe runs through the additional proc-ess steps and extensive non-destructive testing up to final acceptance. Photograph courtesy of SMS Meer GmbH.
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25% Increased Reheating Throughput and 50% Reduced Fuel Consumption
by Flameless Oxyfuel at ArcelorMittal Shelby – Tubular Products, Ohio
Mike Lantz (top left), general foreman — Plt. 1 Primary Mills, and Douglas Hassenzahl (top right), superintendent — hot mill, ArcelorMittal Shelby – Tubular Products, Shelby, Ohio (mike.lantz@arcelormittal.com, douglas.hassenzahl@arcelormittal.com); Anders Lugnet (bottom left), senior research and development engineer — steel industry, Linde Gas, Lidingö, Sweden (anders.lugnet@linde-gas.com); Grzegorz Moroz (bottom center), senior engineer — metals and glass segment, Linde LLC, Murray Hill, N.J. (grzegorz.moroz@linde.com); and Anders Carlsson (bottom right), sales manager — furnace technology, UTAB Division, Linde Gas, Vasteras, Sweden (anders.carlsson@linde-gas.com)
When flameless oxyfuel was implemented in one rotary hearth furnace at ArcelorMittal Shelby, reheating
capacity increased by 25% while fuel consumption decreased by 50%. The objectives, implementation and results of the project are discussed. |
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Further Developments in Wire Rod and Bar Production Using 3-Roll Technology
Sergio A. Filippini (left), president, Kocks Pittsburgh Co., Pittsburgh, Pa. (sfilippini@kockspittsburgh.com), and W.-Jürgen Ammerling (right), member of the board, Friedrich Kocks GmbH & Co. KG, Hilden, Germany (ammerling@kocks.de)
The Adjustable Under Load stand and the “Star Drive” pre-finishing block are the latest examples of new developments in 3-roll technology. These developments
are discussed, along with their design and their status in terms of market introduction. |
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Effect of MnS Distribution on Machinability in Low-Carbon Free-Cutting Steel
M. Hashimura (left), A. Mizuno (center) and K. Miyanishi (right), Muroran R&D Laboratory, Nippon Steel Corp., Muroran, Hokkaido, Japan (hashimura.masayuki@nsc.co.jp, mizuno.atsushi@nsc.co.jp, miyanishi.kei@nsc.co.jp)
In this paper, the effect of MnS distribution is
studied. Results show that steel with high S content and homogeneous distribution of fine MnS grains has
better machinability, especially on the surface
roughness, than that of conventional leaded steel. |
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Improving Quality of Steel Slabs and Billets With Additional Electric Heating Elements
Kirsti M. Tiitto (left), Sigma International Inc., McMurray, Pa. (ktiitto@verizon.net); Juha M. Pyykkonen (center) and Pekka T. Mantyla (right), University of Oulu, Department of Mechanical Engineering, Oulu, Finland (pekka.mantyla@oulu.fi)
This paper studies the effects of additional electric heating elements on the temperature variation in reheating furnaces. Results indicate that skid and slot marks can be considerably reduced and even eliminated without sacrificing quality of the final steel product. |
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Latest Developments in SBQ Cold Processing and Finishing
Stefano Lodolo, executive vice president, and Stefano Casco, manager — sales, Danieli Centro Maskin, Buttrio, Udine, Italy (s.lodolo@danieli.it)
This paper covers the design, development and
implementation of state-of-the-art cold processing and finishing plants for producing SBQ bright bars of carbon steel grades for engineering steels and for the automotive steel industry. |
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MS&T'09 Conference and Exhibition Preliminary Information |
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Coming Next Month....
Show Issue for AIST Steel Properties & Applications Conference Plus Process Metallurgy & Product Applications |
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