steel research international

Cover image for Vol. 84 Issue 3

March 2013

Volume 84, Issue 3

Pages 203–312

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      steel research int. 3/2013

      Article first published online: 5 MAR 2013 | DOI: 10.1002/srin.201390004

      Cover Photo: The cover shows a multifaceted parabolic solar concentrator and absorber at the Almeria Solar Platform, Spain, used to reduce hematite to magnetite. More details can be found in the manuscript by I. Ruiz-Bustinza

  2. Contents

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Full Papers
    1. steel research int. 3/2013 (pages 203–206)

      Article first published online: 5 MAR 2013 | DOI: 10.1002/srin.201390005

  3. Full Papers

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Full Papers
    1. Magnetite Production from Steel Wastes with Concentrated Solar Energy (pages 207–217)

      Iñigo Ruiz-Bustinza, Inmaculada Cañadas, Jose Rodríguez, Javier Mochón, Luis Felipe Verdeja, Fernando Garcia-Carcedo and Alfonso J. Vázquez

      Article first published online: 12 OCT 2012 | DOI: 10.1002/srin.201200145

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      The use of solar thermal energy is quite interesting because of its direct application to metallurgical and chemical processes. A fluidized bed furnace, heated by solar energy has been used to reduce mill scale. The search of the objectives, “zero waste” and “clean energy”, may pose an interesting challenge in the manufacturing of primary iron and steel, as well as in areas of other metal production and even in the recycling of wastes, minimizing CO2 emissions.

    2. Investigating and Understanding the Cyclic Fatigue, Deformation, and Fracture Behavior of a Novel High Strength Alloy Steel: Influence of Orientation (pages 218–228)

      Tirumalai S. Srivatsan, Kannan Manigandan, Andrew M. Freborg and Thomas Quick

      Article first published online: 9 NOV 2012 | DOI: 10.1002/srin.201200132

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      Influence of orientation on high cycle fatigue properties and final fracture behavior of alloy steel Pyrowear 53 is the focus. Test specimens prepared from both the longitudinal and transverse orientations were deformed in cyclic fatigue over a range of maximum stress, under fully-reversed loading, and number of cycles-to-failure recorded. The fracture surfaces were examined to establish the macroscopic mode and characterize intrinsic features on the surface.

    3. Ultra Fast Cooling of a Hot Steel Plate by Using High Mass Flux Air Atomized Spray (pages 229–236)

      Soumya S. Mohapatra, Satya V. Ravikumar, Surjya K. Pal and Sudipto Chakraborty

      Article first published online: 4 SEP 2012 | DOI: 10.1002/srin.201200157

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      The ultra fast cooling of a 6 mm thick hot steel plate has been studied using high mass flux (>130 kg m−2 s) air atomized spray. The heat transfer analysis depicts that air atomized spray has an excellent control over heat transfer even at a high initial surface temperature of 900°C and as a result the maximum cooling rate of 182°C s−1 has been achieved which is in the ultra fast cooling regime.

    4. Steel Thermo-Fluid-Dynamics at Tundish Drainage and Quality Features (pages 237–245)

      Valerio Battaglia, Michele De Santis, Vincenzo Volponi and Maurizio Zanforlin

      Article first published online: 5 OCT 2012 | DOI: 10.1002/srin.201200123

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      CFD modeling of steel flow and temperature fields are described during 5-strand long product tundish drainage at ORI Martin Steelworks. The vortices formation was shown, at first from the strands close to corners. The bath height was found to avoid slag entrapment through vortices. Once applied into operating practice, no rejection or claims for cleanliness were achieved. The beneficial effect of both good insulation and regular drainage rate to prevent steel freezing was found and confirmed by a ORI campaign at tundish start operations including about 700 heats.

    5. Effect of Testing Temperature on Retained Austenite Stability of Cold Rolled CMnSi Steels Treated by Quenching and Partitioning Process (pages 246–252)

      Weijun Feng, Zhibing Wu, Li Wang and John G. Speer

      Article first published online: 5 OCT 2012 | DOI: 10.1002/srin.201200129

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      The effect of testing temperature on retained austenite stability of industrially cold rolled CMnSi sheet steel treated by quenching and partitioning process has been investigated through the deformation and transformation behavior of retained austenite at different testing temperatures. And a correlation between retained austenite stability and mechanical properties is also established.

    6. Effect of Dynamic Transformation on the Mean Flow Stress (pages 253–258)

      John J. Jonas, Chiradeep Ghosh and Vladimir V. Basabe

      Article first published online: 7 SEP 2012 | DOI: 10.1002/srin.201200166

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      Mean flow stresses are calculated from experimental flow curves determined on four steels of increasing C content. These are plotted against inverse temperature so as to define the stress drop or upper critical temperature applicable to rolling. These temperatures are shown to be well above the equilibrium transformation temperatures, an observation that is attributed to the occurrence of dynamic transformation.

    7. Effect of EMBr on Flow in Slab Continuous Casting Mold and Evaluation Using Nail Dipping Measurement (pages 259–268)

      Chuanbo Ji, Jingshe Li, Haiyan Tang and Shufeng Yang

      Article first published online: 5 OCT 2012 | DOI: 10.1002/srin.201200117

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      The information provided in this paper can be applied in steel plant to measure the mold top surface velocity and meniscus fluctuation with time variation. This work can be used to investigate the effect of EMBr and others casting condition on mold surface flow pattern and furthermore improving the casting defect. Also the method in this paper provides a way to validate the accuracy of computational model. This paper is free of charge.▪ Please provide TOC Figure

    8. Measurement of Thermal Load on Working Rolls during Hot Rolling (pages 269–275)

      Miroslav Raudensky, Jaroslav Horsky, Jana Ondrouskova and Bart Vervaet

      Article first published online: 30 OCT 2012 | DOI: 10.1002/srin.201200148

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      An experimental technique developed for monitoring the work roll surface temperature by sensors embedded in the work roll is presented. Continuous hot rolling pilot line trials were performed for different process conditions. These thermal measurements give very detailed information about the temperature field in the roll. The heat flux and heat transfer coefficient distribution along the roll circumference were obtained.

    9. Simulations of the Ladle Teeming Process and Verification With Pilot Experiment (pages 276–287)

      Peiyuan Ni, Lage T.I. Jonsson and Pär G. Jönsson

      Article first published online: 5 NOV 2012 | DOI: 10.1002/srin.201200155

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      Predicted interface in an inclined bottom ladle with an expanding diameter nozzle during teeming by VOF+ realizable kε model with enhanced wall treatment.

    10. The Slenderness Ratio of the Filter Used in the Process of Liquid Steel Filtration as the Additional Parameter of the Filter Form (pages 288–296)

      Krystian Janiszewski

      Article first published online: 17 SEP 2012 | DOI: 10.1002/srin.201200077

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      We propose in this publication the introduction of new, additional definition describing the multiple orifice ceramic filters used in research works on the liquid steel filtrations, calling this the filter slenderness ratio. Using this coefficient we obtain the possibility to compare the filtration effectiveness of different types of ceramic filters, not only for filters with cylindrical filtrating orifices, but also for other types, e.g., with orifices of rectangular section.

    11. Anisotropy of Retained Austenite Stability during Transformation to Martensite in a TRIP-Assisted Steel (pages 297–303)

      Esmaeil Emadoddin, Abbas Akbarzadeh, Roumen Petrov and Lie Zhao

      Article first published online: 17 DEC 2012 | DOI: 10.1002/srin.201200197

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      Strain induced martensitic transformation of retained austenite has been studied in Al-containing TRIP steel samples with similar retained austenite characteristics. It was found a difference of retained austenite stability by tensile straining along RD and TD. This behavior has been explained by the texture component of ferrite causes anisotropy of crystal plasticity so that more transformation of retained austenite is measured along RD rather than TD.

    12. Simulation and Application of Swirl-Type Oxygen Lance in Vanadium Extraction Converter (pages 304–312)

      Ming Lv, Rong Zhu, Hui Wang and Ruiguo Bai

      Article first published online: 5 OCT 2012 | DOI: 10.1002/srin.201200136

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      This paper described jet characteristics of conventional and various swirl-type oxygen lances by water model experiment and numerical simulation. The swirl-type oxygen lance was experimented in 150 t vanadium extraction converter. The research shows that the swirl-type lance can strengthen stirring ability and guarantee the normal converter vanadium extraction process. It is helpful to improve vanadium extraction efficiency.