Modeling of heat transfer during controlled cooling in hot rod rolling of carbon steels

Nobari, Amir Hossein; Serajzadeh, S.

doi:10.1016/j.applthermaleng.2010.10.003

Cited by 37 publications

(9 citation statements)

References 16 publications

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“…Various researchers carried out the modeling temperature evolution of steel bars for a cooling system by solving the following heat transfer equation:

\nabla (k \nabla T) + q_{tr} = ρ C_{p} true \dot{T}

where k is the thermal conductivity, T is the temperature,

true \dot{T}

is the time derivate of temperature, ▿ is the gradient operator, q tr is the latent heat released due to phase change, ρ is the density, and C p is specific heat of material of bar.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

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A Finite Element Method for the Prediction of Thermal, Metallurgical, and Mechanical Behavior of Rebars in the TempCore Process

Dimatteo

Vannucci

Colla

2015

steel research int.

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The production of steel reinforcing bars for civil engineering is investigated by means of finite element model-based simulation. The aim of this study is to predict the internal structures of steel bars after treatment through the TempCore process by using a finite element method. Moreover, a model for the prediction of final mechanical properties of the bars produced by means of this process has been constructed and validated with real industrial data. Highlights FEM was used to simulate the thermal evolution of bars in the TempCore cooling stand. A predictive model of bar final macrostructure was constructed and validated. A predictive model of bar final mechanical properties was constructed and validated. An average percent error for prediction of tensile strength less of 1.54% was got. An average percent error for prediction of yield strength less of 2.23% was got.

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“…Various researchers carried out the modeling temperature evolution of steel bars for a cooling system by solving the following heat transfer equation:

\nabla (k \nabla T) + q_{tr} = ρ C_{p} true \dot{T}

where k is the thermal conductivity, T is the temperature,

true \dot{T}

is the time derivate of temperature, ▿ is the gradient operator, q tr is the latent heat released due to phase change, ρ is the density, and C p is specific heat of material of bar.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…Various researchers [10][11][12][13][14][15][16][17] carried out the modeling temperature evolution of steel bars for a cooling system by Figure 1. Schematic description of the TempCore process.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

A Finite Element Method for the Prediction of Thermal, Metallurgical, and Mechanical Behavior of Rebars in the TempCore Process

Dimatteo

Vannucci

Colla

2015

steel research int.

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“…In most cases, the non-quenched and tempered steel after rolling is the most widely used with large amount of application. Rolling of the non-recrystallized zone is usually performed below the termination temperature of recrystallization [36]. In the austenite nonrecrystallization zone rolling, the process of austenite into ferrite makes ferrite and pearlite grain size refined.…”

Section: Microstructural Observationsmentioning

confidence: 99%

Deformation Behavior and Processing Map during Isothermal Hot Compression of 49MnVS3 Non-Quenched and Tempered Steel

Wang

Shi

Cai

et al. 2018

High Temperature Materials and Processes

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The deformation behavior of 49MnVS3 non-quenched and tempered steel was studied using isothermal compression tests at the temperature range of 750–1000 °C and the strain rate range of 0.1–50 s−1 on a Gleeble-3500 thermal mechanical simulator. The results indicated that the flow stress increases significantly with decreasing temperature and increasing strain rate. Under the whole deformation conditions, the dependence of flow stress on deformation temperature and strain rate was analyzed by hyperbolic sine equation. Besides, the hot deformation activation energy and stress exponent were calculated to be 323.56 kJ/mol and 6.99, respectively. In addition, the processing map based on dynamic material model was established, and the optimum processing condition of the 49MnVS3 non-quenched and tempered steel can be determined to be at the temperature range of 809–850 °C and strain rate of 36.6 s−1–50 s−1.

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“…Recently, Bhattacharya et al [9] studied spray evaporative cooling to achieve ultrafast cooling in the run-out table. Nobari and Serajzadeh [10] predicted the heat transfer behavior during cooling of carbon steels based on a finite-element method. In all of these studies, the interaction of water and the strip surface during cooling is represented using an effective heat transfer coefficient.…”

Section: Introductionmentioning

confidence: 99%

Thermal Behavior of a Hot Moving Steel Strip Under Multi-Cooling Jets

Barman

Mukhopadhyay

et al. 2014

Heat Transfer Engineering

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In the present work, the thermal behavior during cooling of a steel strip is predicted numerically. Multiple jets of pressurized water are considered for cooling purposes; they impinge on the surface of the metal strip. The cooling of the metal strip is represented by a steady-state energy conservation equation, where an effective heat transfer coefficient is considered based on jet and strip velocities for jet-surface heat interaction. The numerical simulation is performed using a finite-volume method, and distribution of temperature within the strip is predicted. Subsequently, the effect of strip velocity on the temperature distribution and corresponding cooling rate is studied.

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Modeling of heat transfer during controlled cooling in hot rod rolling of carbon steels

Cited by 37 publications

References 16 publications

A Finite Element Method for the Prediction of Thermal, Metallurgical, and Mechanical Behavior of Rebars in the TempCore Process

A Finite Element Method for the Prediction of Thermal, Metallurgical, and Mechanical Behavior of Rebars in the TempCore Process

Deformation Behavior and Processing Map during Isothermal Hot Compression of 49MnVS3 Non-Quenched and Tempered Steel

Thermal Behavior of a Hot Moving Steel Strip Under Multi-Cooling Jets

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