Effect of SEN immersion depth on mold flow profile and slag entrapment during continuous casting of steel

Authors

  • Mallikarjuna Rao P JSW Steel Limited, Vijayanagar Works, Toranagallu, Bellary, Karnataka, India.
  • Vaibhav Vasantrao Chougale College of Engineering, Shivajinagar, Pune, Maharashtra, India.
  • Satish Kumar D JSW Steel Limited, Vijayanagar Works, Toranagallu, Bellary, Karnataka, India.
  • Rajendra T JSW Steel Limited, Vijayanagar Works, Toranagallu, Bellary, Karnataka, India
  • Balachandran G JSW Steel Limited, Vijayanagar Works, Toranagallu, Bellary, Karnataka, India

DOI:

https://doi.org/10.30544/653

Keywords:

Mold slag entrapment, SEN immersion depth, Casting speed, Mold flow profile, Water modeling, Nail board

Abstract

Mold flux entrapment during continuous casting of steel contributes to both surface and sub-surface defects in the final product. Continuous casting operating parameters such as casting speed, SEN immersion depth, SEN port geometry, argon flow, and mold EMS significantly affect the mold flow conditions and flow profile. During continuous casting operation, SEN immersion depth is continuously varied to avoid localized erosion of SEN, and it impacts the flow dynamics in the mold. In the present work, water modeling studies were carried out for a wide range of mold widths (1200-1800 mm) and casting speeds (0.8-1.4 m/min) on a 0.5 scaled down water model to optimize casting speed for different combinations of SEN immersion depth and mold width. Results from water modeling were further validated using nail board studies in the actual plant. A safe operating matrix was identified from these experiments to avoid mold slag entrapment during continuous casting.

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Published

2021-10-05

How to Cite

P, Mallikarjuna Rao, Vaibhav Vasantrao Chougale, Satish Kumar D, Rajendra T, and Balachandran G. 2021. “Effect of SEN Immersion Depth on Mold Flow Profile and Slag Entrapment During Continuous Casting of Steel”. Metallurgical and Materials Engineering 27 (4):557-73. https://doi.org/10.30544/653.

Issue

Section

Steelmaking and processing - devoted to Prof. Ljubomir Nedeljković