Prediction of Final Solidification Position in Continuous Casting Bearing Steel Billets by Slice Moving Method Combined with Kobayashi Approximation and Considering MnS and Fe&lt;sub&gt;3&lt;/sub&gt;P Precipitation

Wang, Weixian; Zhang, Hongwei; Nakajima, Keiji; Lei, Hong; Tang, Guofeng; Wang, Xinghua; Mu, Wangzhong; Jiang, Maofa

doi:10.2355/isijinternational.isijint-2021-205

Cited by 3 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As for mould heat fluxes, several measuring tests have been conducted for heat transfer coefficients also, resulting in a wide range of empirical correlations (see refs. [20][21][22][23][24][25][26] for details).…”

Section: Cooling Chambermentioning

confidence: 99%

Effectiveness of Travelling Slice Modeling in Representing the Continuous Casting Process of Large Product Sections

Bazzaro,

De Bona

2023

Metals

View full text Add to dashboard Cite

It is critical in the metal continuous casting process to estimate the temperature evolution of the casted section along the machine from the meniscus (the point where liquid metal is poured) to the cutting machine, where the product is cut to commercial length. A convenient approximated model to achieve this goal with a feasible computational effort, particularly in the case of large sections, is the so-called travelling slice: the transversal section of casted product is subjected to different thermal boundary conditions (e.g., thermal flux, radiation, convection) that are found during the movement at constant speed from meniscus to the end of machine. In this work, the results obtained with the approximated travelling slice model are analyzed in the favorable case of an axisymmetric section. In this case, the reference model is 2D, whereas the travelling slice model degenerates in a simple 1D model. Three different casted shapes were investigated, rounds with diameters of 200 mm, 850 mm, and 1200 mm, spanning from traditional to only recently adopted product diameter sizes. To properly test the validity of the travelling slice model, other casting speeds were considered, even outside the industrial range. Results demonstrate the advantage of using the travelling slice, particularly the much lower computational cost without sacrificing precision, even at low casting speed and large dimensions.

show abstract

Section: Cooling Chambermentioning

confidence: 99%

Effectiveness of Travelling Slice Modeling in Representing the Continuous Casting Process of Large Product Sections

Bazzaro,

De Bona

2023

Metals

View full text Add to dashboard Cite

show abstract

“…There are several ways that the position of the liquid core has been determined in the past, such as through the use of load cells [11], strain gauges [12], load torque estimators [11], smart sensors [13], drive roll shimming [14], slab macro-etching [15], mathematical modeling [9], and so on. Interruption of production in a steel plant is undesirable and comes with substantial economic costs.…”

Section: Introductionmentioning

confidence: 99%

Liquid Core Detection and Strand Condition Monitoring in a Continuous Caster Using Optical Fiber

Neelakandan

Alla

Huang

et al. 2022

Sensors

View full text Add to dashboard Cite

Real-time monitoring of the liquid core position during the continuous casting of steel has been demonstrated using low-cost distributed optical-fiber-based strain sensors. These sensors were installed on the containment roll support structures in the segments of a production continuous caster to detect the position of the solid–liquid interface and monitor the strand condition during the continuous casting. Distributed Fiber Bragg Grating sensors (FBGs) were used in this work to monitor strain at six roll positions in the caster. The sensor performance was first validated by comparing optical strain measurements with conventional strain gauge measurements in the lab. Next, optical strain measurements were performed on an isolated caster segment in a segment maintenance facility using hydraulic jacks to simulate the presence of a liquid core under the roll. Finally, the sensors were evaluated during caster operation. The sensors successfully detected the load increase associated with the presence of a liquid core under each instrumented roll location. Incidents of bulging and roll eccentricity were also detected using frequency analysis of the optical strain signal. The liquid core position measurements were compared using predictions from computer models (digital twins) in use at the production site. The measurements were in good agreement with the model predictions, with a few exceptions. Under certain transient caster operating conditions, such as spraying practice changes and SEN exchanges, the model predictions deviated slightly from the liquid core position determined from strain measurements.

show abstract

Effectiveness of Travelling Slice Modeling in Representing the Continuous Casting Process of Large Product Sections

Bazzaro¹,

Bona²

2023

Preprint

View full text Add to dashboard Cite

In metal continuous casting process is important to estimate the temperature evolution of casted section along machine from meniscus (point in which liquid metal is poured) to cutting machine where product is cut at commercial length. Particularly in the case of large sections, a convenient approximated model to achieve this goal with a feasible computational effort, is the so called travelling slice: the transversal section of casted product is subjected to different thermal boundary conditions (e.g. thermal flux, radiation, convection) that are found during the movement at constant speed from meniscus to the end of machine. In the case of an axisymmetric section, a comparison with the exact solution can be easily achieved. The article will show pros and cons of both, namely the far lower computational cost of travelling slice model without losing precision. Results confirm the validity of the travelling slice approach also at low casting speed and huge dimensions.

show abstract

Prediction of Final Solidification Position in Continuous Casting Bearing Steel Billets by Slice Moving Method Combined with Kobayashi Approximation and Considering MnS and Fe<sub>3</sub>P Precipitation

Cited by 3 publications

References 15 publications

Effectiveness of Travelling Slice Modeling in Representing the Continuous Casting Process of Large Product Sections

Effectiveness of Travelling Slice Modeling in Representing the Continuous Casting Process of Large Product Sections

Liquid Core Detection and Strand Condition Monitoring in a Continuous Caster Using Optical Fiber

Effectiveness of Travelling Slice Modeling in Representing the Continuous Casting Process of Large Product Sections

Contact Info

Product

Resources

About