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The Water Model Experiment And Verification For Optimization of 150T Ladle Bottom Blowing Argon

Published: 2014
Authors: Xiang Li, Yanping Bao, Linzhu Wang, Lu Lin, Qiyi Zhang

The ladle bottom argon blowing technology was widely used in steel refining. It can not only homogeneous liquid steel temperature and composition, but also can remove inclusions by dispersed small bubbles. However, there were some problems about reoxidation of molten steel and corrosion of ladle barrel in actual production caused by unreasonable of plug position and inaccuracy of argon flow control.

Material Resources / Publications

Hot Ductility Comparison of Percent Reduction In Area And Strain Energy For The Continuous Casting Of Nb-Microalloyed Steels

Published: 2014
Authors: Steven G. Jansto

This research shows that high carbon equivalent microalloyed steels which exhibit inherently lower hot ductility, as measured by percent reduction in area at elevated temperature, still exhibit sufficient ductility in industrial casting operations to satisfactorily meet the unbending stress and strain gradients existing in the straightening section of most casters.

Material Resources / Publications

Kinetics Model on Modification of Mgo-Al2O3 Inclusions

Published: 2014
Authors: Libin Zhu, Shufeng YangR, Jun Fan, Xiangzhou Gao, Jingshe Li

In this paper, high-temperature experiments were first carried out to study the modification kinetics of Mg0-Al203 inclusions by Ca-treatment, and then a kinetic model for modification of Mg0-Al203 inclusions by Ca-treatment was developed.

Material Resources / Publications

Physical Simulation Study On Optimization Of Nozzle Structure For Round Mould With M-Ems

Published: 2014
Authors: Wang Chao, Zhang Hui, Wang Ming-lin, MaZhong-Wei, Zhao Pei

The electromagnetic stirring (EMS) has been proved to be an effective technique for optimizing the billet quality. In this study, the M-EMS in the round caster was simulated by mechanical agitation which was developed innovatively and the effect of EMS on the flow field and inclusion removal behavior in the mould was studied.

Material Resources / Publications

A Coupled Model Of Microsegregation And Tin Inclusion Precipitation During Solidification Of Gcr15Simn In Esr Process

Published: 2014
Authors: Liang Yang, Shijian Li, Guoguang Cheng, Min Zhao, Guiping Feng

The microsegregation and non-metallic inclusion TiN precipitation during solidification of GCrl5SiMn in ESR process is strongly harmful to steel properties. Many studies have been reported models of solute elements microsegregation during solidification, for example, Scheil model, Brody-Flemings model[1], Clyne-Kurz model[2], Ohnaka model[3], however, all models mentioned above are not taking the influence of inclusion precipitation on solute elements microsegregation into consideration, which will result in the overestimate of microsegregation degree.

Material Resources / Publications

Quantitative Approach Of Selecting A Heat Treater Using Cqi 9 Standardization

Published: 2014
Authors: Sankaran Srinivasan, K. Manikandan, Giridhar Venkatesan

The success of a part produced for its world class quality depends upon the allied processes like heat treatment & plating. Even though the guidelines for doing a good heat treatment are available, the selection is limited as the approach available is qualitative in nature.

Material Resources / Publications

Influence Of Stored Energy In Cold Rolled Sheet On The Formation Of Austenite During The Subsequent Intercritical Annealing Of V-Bearing Dual-Phase Steels

Published: 2014
Authors: Yu Gong, X. Liang, M. Hua, Juha Uusitalo and A. J. DeArdo

Recent research has shown an important relationship between the stored energy of the hot band, the increase in stored energy in cold rolling and the formation of austenite during intercritical annealing of V-bearing DP 980 steels. The stored energy is measured by combining SEM/FEG/EBSD with newly developed software that sums the subgrain boundary energy in the steel.

Material Resources / Publications

Study Of Friction During Cold Rolling Of Steel In A Four-High Reversible Mill

Published: 2014
Authors: Alan Mario Gonzalez Villarreal, Luis Adolfo Leduc Lezama1, Rafael Mercado Solis, Guillermo Barrera, Fernando Gonzalez

Friction during cold rolling is a complex phenomenon that is not yet fully understood. In industrial rolling processes, the correct prediction of the friction coefficient allows process optimization. Cold rolling friction has traditionally been studied using laboratory mills under controlled experimental conditions.

Material Resources / Publications

Microstructural And Computer Modeling Study Of The Annealing Behavior Of Vanadium Bearing Hsla Steel After Cold Rolling

Published: 2014
Authors: R. Ordonez, G. Wang, Z. Liu, J. Smiley, R. Moses, and C.I. Garcia

The annealing behavior of commercial Vanadium bearing HSLA steel was studied using different techniques such as OM, SEM, and electron backscattered diffraction (EBSD). The Kernel Average Misorientation and Sub-grain method were used to measure the local grain misorientation, the changes in stored energy and to calculate the percent recrystallization after annealing.

Material Resources / Publications

Recent Developments In Continuous Annealing Process Of Advanced High Strength Steels At Thyssenkrupp Steel Europe

Published: 2014
Authors: Marc Blumenau, Annette Baumer

Modem and future advanced high strength steels (AHSS) with multi-phase microstructure are characterized by an increasing amount of alloying elements, an increasing strength and an increasing demand for an appropriate continuous annealing process after cold-milling. Therefore, processing of AHSS in a continuous annealing line (CAL) represents a promising alternative to continuous hot-dip galvanizing.

Material Resources / Publications

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