A Thermal Simulation Method for Solidification Process of Steel Slab in Continuous Casting

2016 ◽  
Vol 47 (5) ◽  
pp. 2963-2970 ◽  
Author(s):  
Honggang Zhong ◽  
Xiangru Chen ◽  
Qingyou Han ◽  
Ke Han ◽  
Qijie Zhai
Keyword(s):  
Continuous Casting ◽  
Solidification Process ◽  
Simulation Method ◽  
Thermal Simulation ◽  
Steel Slab

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.

Effect of the Multi-Electromagnetic Fields on the Solidification Process of the Continuous Casting Hollow Billet

2012 ◽  
Vol 538-541 ◽  
pp. 1049-1052
Author(s):  
Qi Zhang ◽  
Jin Wang ◽  
Zhong Chu
Keyword(s):  
Electromagnetic Field ◽  
Continuous Casting ◽  
Molten Metal ◽  
Electromagnetic Fields ◽  
Solidification Process ◽  
Side Surface ◽  
Simulation Method ◽  
Outer Side ◽  
Billet Quality ◽  
Hollow Billet

In order to optimize the process parameters of continuous casting hollow billet with multi-electromagnetic fields, the solidification process of the continuous casting hollow billet was studied by the numerical simulation method, the results show that: 1) when only solenoid coil is imposed on outside of the outer-mold, it generates a lot of joule heat near the outer-side surface of hollow billet and leads to the uneven thickness of the solidified shell which is easily cause the crack defect. 2) when only traveling stirring electromagnetic field is imposed in the inside of the inner-mold, it can homogenize the temperature distribution of the molten metal and decrease the sump height, but it can also result in the uneven thickness of the solidified shell because of the nonuniform flow of molten metal. 3) when the above two kinds of electromagnetic field are applied simultaneously, the multi-electromagnetic fields can improve the homogeneous thickness of the solidified shell and decrease the sump height which is better for the high casting velocity and hollow billet quality.

Effect of Strain Rate on Nb(C,N) Precipitation in Micro Alloy Steel Slab

2012 ◽  
Vol 535-537 ◽  
pp. 633-638 ◽  
Author(s):  
Zheng Hai Zhu ◽  
Sheng Tao Qiu
Keyword(s):  
Continuous Casting ◽  
Strain Rate ◽  
Alloy Steel ◽  
Casting Speed ◽  
Casting Process ◽  
Continuous Casting Process ◽  
Precipitation Model ◽  
Strain And Strain Rate ◽  
Steel Slab

It was analyzed by strain-induced precipitation model that Nb(C,N) precipitation in micro alloy steel slab was effected by strain rate during continuous casting process. The results are as follows: The changing of casting speed could effect the time for 5%precipitation of Nb(C,N), which was decreasing with increasing casting speed at certain temperature and strain rate. Slab strain and strain rate were too small in bending zone and leveling zone. The effect of slab strain rate on Nb(C,N) precipitation could be ignore when Nb(C,N) precipitation in continuous casting process was studied.

Conjugate Heat Transfer and Effects of Interfacial Heat Flux During the Solidification Process of Continuous Castings

2003 ◽  
Vol 125 (2) ◽  
pp. 339-348 ◽  
Author(s):  
M. Ruhul Amin ◽  
Nikhil L. Gawas
Keyword(s):  
Heat Transfer ◽  
Continuous Casting ◽  
Cooling Rate ◽  
Solidification Process ◽  
Air Gap ◽  
Gap Formation ◽  
Continuous Casting Mold ◽  
Withdrawal Velocity ◽  
Multiphase Fluid Flow ◽  
Multiphase Fluid

Multiphase fluid flow involving solidification is common in many industrial processes such as extrusion, continuous casting, drawing, etc. The present study concentrates on the study of air gap formation due to metal shrinkage on the interfacial heat transfer of a continuous casting mold. Enthalpy method was employed to model the solidification of continuously moving metal. The effect of basic process parameters mainly superheat, withdrawal velocity, mold cooling rate and the post mold cooling rate on the heat transfer was studied. The results of cases run with air gap formation were also compared with those without air gap formation to understand the phenomenon comprehensively. The current study shows that there exists a limiting value of Pe above which the effect of air gap formation on the overall heat transfer is negligible.

scholarly journals Experimental and Numerical Simulations of the Solidification Process in Continuous Casting of Slab

Metals ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 53 ◽  
Author(s):  
Liang Bai ◽  
Bo Wang ◽  
Honggang Zhong ◽  
Jie Ni ◽  
Qijie Zhai ◽  
...  
Keyword(s):  
Continuous Casting ◽  
Numerical Simulations ◽  
Solidification Process

Numerical Simulation on the Process of Al-Alloy Air Cushion Continuous Casting

2014 ◽  
Vol 496-500 ◽  
pp. 187-192
Author(s):  
Yan Lu Huang ◽  
Yu Min Zhang
Keyword(s):  
Continuous Casting ◽  
Solution Method ◽  
Solidification Process ◽  
Momentum Conservation ◽  
Al Alloy ◽  
System A ◽  
Air Cushion ◽  
Solid Liquid ◽  
Coupled Solution ◽  
Change System

According to the characteristics of solidification process of air cushion continuous casting, and on the basis of continuum model for binary solid-liquid phase change system, a set of equations which include continuity, momentum conservation, energy conservation and solute conservation ones are established. Furthermore, a coupled solution method of the set of equations, in which controlled-volume finite difference method is used and developed. The effects of some typical parameters such as billet diameter, casting speed and the second cooling on the solidification behavior are studied, and some meaningful results, which are significant to the technique optimizing of the air cushion continuous casting, are obtained.

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