VAR ingot solidification model and its verification

2020 ◽  
Vol 229 (2-3) ◽  
pp. 485-494
Author(s):  
Evgeniy Kondrashov ◽  
Kirill Rusakov ◽  
Mikhail Leder
Keyword(s):  
Solidification Model ◽  
Ingot Solidification

scholarly journals Effects of Weight‐Compatible Design on Ingot Solidification

2021 ◽  
Vol 92 (3) ◽  
pp. 2170031
Author(s):  
Yan Zhang ◽  
Changjun Xu ◽  
Ningning Liu ◽  
Yuting Zhang ◽  
Zhengguo Xue
Keyword(s):  
Ingot Solidification

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.

Multi-Fields Coupled Simulation on Casting Process of Aluminum Alloy Based on Heat Conduction by Rotating Heat Pipe Bundle

2012 ◽  
Vol 621 ◽  
pp. 237-245
Author(s):  
Jian Mei Chen ◽  
Yu Qiang Li ◽  
Jia Qiang E
Keyword(s):  
Aluminum Alloy ◽  
Heat Conduction ◽  
Heat Pipe ◽  
Heat Pipes ◽  
Casting Process ◽  
Working Process ◽  
New Approach ◽  
Molten Liquid ◽  
Ingot Solidification ◽  
Structure Layout

Based on the knowledge to defects and advantages of traditional ingot casting, a new approach for casting of aluminum alloy ingot, based on heat conduction by rotating heat pipes, is put forward in this paper. Different from the conventional casting method that cooling around ingot, the microstructure and properties of casting ingots can be significantly improved due to cooling of molten liquid from the central by rotating heat pipes proposed by this paper. Through simulation on the working process and the fields of flow and temperature, it can be speculatively seen that the ingot solidification is from inside to outside and that inner stress inside the ingot is compressive. The influences of speed of heat pipe bundle, casting speed and casting temperature on the temperature field in the ingot have been systematically studied. The ingots with different sizes can be prepared by changing size and structure layout of the heat pipes.

scholarly journals Numerical simulation of solute trapping phenomena using phase-field solidification model for dilute binary alloys

2009 ◽  
Vol 12 (3) ◽  
pp. 345-351 ◽  
Author(s):  
Henrique Silva Furtado ◽  
Américo Tristão Bernardes ◽  
Romuel Figueiredo Machado ◽  
Carlos Antônio Silva
Keyword(s):  
Numerical Simulation ◽  
Phase Field ◽  
Binary Alloys ◽  
Solute Trapping ◽  
Solidification Model

Analysis of Madejski Splat-Quench Solidification Model With Modified Initial Conditions

2004 ◽  
Vol 126 (3) ◽  
pp. 485-489 ◽  
Author(s):  
D. Sivakumar ◽  
H. Nishiyama
Keyword(s):  
Present Model ◽  
Initial Conditions ◽  
Substrate Surface ◽  
Solid Substrate ◽  
Droplet Radius ◽  
Time Interval ◽  
Solidification Model ◽  
Numerical Predictions ◽  
Model Predictions ◽  
The Impact

The initial conditions of Madejski’s splat-quench solidification model for the impact of molten droplets on a solid substrate surface are modified by eliminating the adjustable parameter “ε” used in the estimation of initial spreading droplet radius. In the present model, the initial conditions are estimated after a definite time interval from the start of impact. Numerical predictions obtained from an improved Madejski model with different ε and the corresponding experimental measurements published in the literature are used for the comparison of the present model predictions. The improvements noted from the model predictions are reported.

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