Heat Transfer and Solidification Model of Slab Continuous Casting Based on Nail-Shooting Experiments

2015 ◽  
Vol 1088 ◽  
pp. 153-158 ◽  
Author(s):  
An Gui Hou ◽  
Yi Min ◽  
Cheng Jun Liu ◽  
Mao Fa Jiang
Keyword(s):  
Heat Transfer ◽  
Continuous Casting ◽  
Liquid Core ◽  
Casting Process ◽  
Soft Reduction ◽  
Slab Continuous Casting ◽  
Solidification Model ◽  
Core Length ◽  
Measurement Results ◽  
Heat Transfer And Solidification

A heat transfer and solidification model of slab continuous casting process was developed, and the nail-shooting experiments were carried out to verify and improve the prediction accuracy. The comparison between the simulation and the measurements results showed that, there exists difference between the model predicted liquid core length and the calculated liquid core length according to the measurement results of the solidification shell thickness. In the present study, the value of constant a in the heat transfer coefficient calculation formula was corrected through back-calculation, results showed that, the suitable value of a is 31.650, 33.468 and 35.126 when the casting speed is 0.8m·min-1, 0.9m·min-1 and 1.0m·min-1 respectively, which can meet the liquid core length of the measurement results. The developed model built a foundation for the application of dynamic secondary cooling, and dynamic soft reduction.

scholarly journals Uneven Solidification during Wide-thick Slab Continuous Casting Process and its Influence on Soft Reduction Zone

2014 ◽  
Vol 54 (1) ◽  
pp. 103-111 ◽  
Author(s):  
Cheng Ji ◽  
Sen Luo ◽  
Miaoyong Zhu ◽  
Yogeshwar Sahai
Keyword(s):  
Continuous Casting ◽  
Casting Process ◽  
Reduction Zone ◽  
Continuous Casting Process ◽  
Soft Reduction ◽  
Thick Slab ◽  
Slab Continuous Casting

Numerical Study of Liquid Core Solidification in Influence of Soft Reduction Deformation on Steel Slab Continuous Casting Process

2008 ◽  
Vol 575-578 ◽  
pp. 80-86 ◽  
Author(s):  
J. Luo ◽  
Xin Lin ◽  
Yan Hong Ye ◽  
K.W. Liu
Keyword(s):  
Continuous Casting ◽  
Numerical Study ◽  
Liquid Core ◽  
Solidification Process ◽  
Casting Process ◽  
Reduction Factor ◽  
Two Dimensions ◽  
Temperature Function ◽  
Soft Reduction ◽  
Steel Slab

A two dimensions (2D) multiphase solidification model is used to study the liquid core solidification in the influence of deformation during soft reduction of continuous casting (CC). The transient transport equations (mass, momentum and enthalpy) for each phase of a thin steel slab CC are solved. Four different cases including of density-temperature function and deformation reduction factor on this CC are simulated. The solidification ending point position of liquid core, temperature, velocity and fracture of liquid and solid phases are compared. Understandings to the deformation and liquid core formation mechanism on soft reduction solidification process of CC are improved.

Steel Structure Prediction for Continuous Steel Casting by Means of a Parallel GPU-Based Heat Transfer and Solidification Model

2015 ◽  
Author(s):  
Lubomír Klimeš ◽  
Josef Štětina ◽  
Tomáš Mauder
Keyword(s):  
Heat Transfer ◽  
Continuous Casting ◽  
Structure Prediction ◽  
Steel Production ◽  
Steel Structure ◽  
Production Method ◽  
Micro Structure ◽  
Solidification Model ◽  
Minimum Number ◽  
Heat Transfer And Solidification

Continuous casting of steel is currently a predominant production method of steel, which is used for more than 95% of the total world steel production. An effort of steelmakers is to cast high-quality steel with a desired structure and with a minimum number of defects, which reduce the productivity. The paper presents our developed GPU-based heat transfer and solidification model for continuous casting, which is coupled with a submodel used for the prediction of the steel micro-structure. The model is implemented in CUDA/C++, which allows for rapid computing on NVIDIA GPUs. The time-dependent temperature distribution calculated by the thermal model is iteratively passed to the submodel for the steel micro-structure prediction. The structural submodel determines the spatially-dependent rates of temperature change in the strand, for which the interdendritic solidification model IDS predicts the micro-structure of steel. The paper presents preliminary simulation results for the steel grade used for pressure vessel plates, which is sensitive to rapid cooling rates.

scholarly journals Development and Application of Dynamic Soft-reduction Control Model to Slab Continuous Casting Process

2010 ◽  
Vol 50 (11) ◽  
pp. 1637-1643 ◽  
Author(s):  
Zhiwei Han ◽  
Dengfu Chen ◽  
Ke Feng ◽  
Mujun Long
Keyword(s):  
Continuous Casting ◽  
Casting Process ◽  
Control Model ◽  
Continuous Casting Process ◽  
Soft Reduction ◽  
Slab Continuous Casting ◽  
Dynamic Soft Reduction
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