3D Numerical Simulation on Thermal Flow Coupling Field of Stainless Steel During Twin-Roll Casting

2013 ◽  
Vol 23 (1) ◽  
pp. 39-48 ◽  
Author(s):  
Lianlian Liu ◽  
Bo Liao ◽  
Jing Guo ◽  
Ligang Liu ◽  
Hongyan Hu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Stainless Steel ◽  
Thermal Flow ◽  
3D Numerical Simulation ◽  
Coupling Field ◽  
Twin Roll Casting ◽  
Flow Coupling ◽  
Roll Casting ◽  
Twin Roll

scholarly journals Analysis of Thermal Stress during of Twin-Roll Casting of Magnesium Alloy

2012 ◽  
Vol 217-219 ◽  
pp. 1928-1933
Author(s):  
Yu Cheng Zhang ◽  
Tian Yang Han ◽  
Zheng Yi Jiang ◽  
Dong Bin Wei
Keyword(s):  
Numerical Simulation ◽  
Thermal Stress ◽  
Magnesium Alloy ◽  
Process Parameters ◽  
Element Model ◽  
Spray Angle ◽  
Thermal Cracks ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll

The process of twin-roll casting including pouring, solidifying, rolling and cooling can be accomplished in a very short time. Consequently, some important process parameters in the twin-roll casting that are difficult to be obtained in experiment can be acquired using numerical simulation. In this paper, a numerical simulation based on a 2D finite element model of vertical twin-roll strip casting of magnesium alloy has been conducted, and the thermal stress fields are significantly discussed. The influences of key process parameters consisting of submerged nozzle depth and nozzle spray angle have been studied. The thermal cracks on the surface of the strip are analysed according to the thermal stress distribution.

Thermal flow simulation of twin-roll casting magnesium alloy

2012 ◽  
Vol 17 (4) ◽  
pp. 479-483 ◽  
Author(s):  
Xiao-dong Hu ◽  
Dong-ying Ju ◽  
Hong-yang Zhao
Keyword(s):  
Magnesium Alloy ◽  
Flow Simulation ◽  
Thermal Flow ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll

scholarly journals Computer Modeling of Electromagnetic Fields and Fluid Flows for Edge Containment in Continuous Casting

2004 ◽  
Vol 127 (4) ◽  
pp. 724-730 ◽  
Author(s):  
Fon-Chieh Chang ◽  
John R. Hull
Keyword(s):  
Numerical Simulation ◽  
Fluid Flow ◽  
Liquid Metal ◽  
Eddy Currents ◽  
Stokes Equations ◽  
Fluid Flows ◽  
Experimental Results ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll

A computer model was developed to predict eddy currents and fluid flows in molten steel. The model was verified by comparing predictions with experimental results of liquid-metal containment and fluid flow in electromagnetic (EM) edge dams (EMDs) designed at Inland Steel (Ispat Industries Ltd.) for twin-roll casting. This mathematical model can greatly shorten casting research on the use of EM fields for liquid metal containment and control. It can also optimize the existing casting processes and minimize expensive, time-consuming full-scale testing. The model was verified by comparing predictions with experimental results of liquid metal containment and fluid flow in EM edge dams designed at Inland Steel (Ispat Industries Ltd.) for twin-roll casting. Numerical simulation was performed by coupling a three-dimensional (3D) finite-element EM code (ELEKTRA) and a 3D finite-difference fluids code (CaPS-EM) to solve Maxwell’s equations, Ohm’s law, Navier-Stokes equations, and transport equations of turbulence flow in a casting process that uses EM fields. ELEKTRA is able to predict the eddy-current distribution and EM forces in complex geometry. CaPS-EM is capable of modeling fluid flows with free surfaces and dynamic rollers. The computed 3D magnetic fields and induced eddy currents in ELEKTRA are used as input to flow-field computations in CaPS-EM. Results of the numerical simulation compared well with measurements obtained from both static and dynamic tests.

Thermal Flow-Solidification Simulation and Analysis of Strip Defects in Vertical Twin-Roll Casting of Magnesium Alloy

2015 ◽  
Vol 833 ◽  
pp. 15-18 ◽  
Author(s):  
Zhi Pu Pei ◽  
Dong Ying Ju ◽  
Hong Yang Zhao ◽  
Xiao Dong Hu
Keyword(s):  
Temperature Distribution ◽  
Magnesium Alloy ◽  
Casting Process ◽  
Thermal Flow ◽  
Twin Roll Casting ◽  
Solidification Simulation ◽  
Roll Casting ◽  
Pool Level ◽  
Cast Magnesium ◽  
Twin Roll

A quantitative understanding of the twin-roll casting process is required to get high quality as-cast magnesium alloy strips. In this paper, a thermal flow-solidification simulation was carried out to study the behavior of casting zone and its effects on defects generation deeply. Results show that a lower pouring temperature is not suitable for producing defect-free magnesium alloy strips. With increasing of the casting speed, the tendency of cracks formation will getting smaller because of the more uniform temperature distribution. A low pool level leads to a small metal-roll contact area, and a sharp temperature distribution will generates under this situation, which is not good for strips quality.

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