scholarly journals Positive segregation as a function of buoyancy force during steel ingot solidification

2008 ◽  
Vol 9 (4) ◽  
pp. 045003 ◽  
Author(s):  
Zarko Radovic ◽  
Nada Jaukovic ◽  
Milisav Lalovic ◽  
Nebojsa Tadic
Keyword(s):  
Buoyancy Force ◽  
Steel Ingot ◽  
Positive Segregation ◽  
Ingot Solidification

FEM simulation of effect of mould wall thickness on low alloy steel ingot solidification

2016 ◽  
Vol 43 (8) ◽  
pp. 621-627 ◽  
Author(s):  
P. Patil ◽  
A. Puranik ◽  
G. Balachandran ◽  
V. Balasubramanian
Keyword(s):  
Alloy Steel ◽  
Wall Thickness ◽  
Steel Ingot ◽  
Fem Simulation ◽  
Low Alloy Steel ◽  
Mould Wall ◽  
Ingot Solidification ◽  
Alloy Steel Ingot

The Mathematical Model and Simulation of Macrosegregation during Solidification Process of Super Heavy Steel Ingot

2012 ◽  
Vol 468-471 ◽  
pp. 1026-1030
Author(s):  
Xiao Ping Liang ◽  
Yu Gang Li ◽  
Bin Zhao ◽  
Yu Wang
Keyword(s):  
Heat Transfer ◽  
Mathematical Model ◽  
Steel Ingot ◽  
Solidification Process ◽  
Solute Redistribution ◽  
Average Value ◽  
Model And Simulation ◽  
Simulated Temperature ◽  
Positive Segregation ◽  
The Mathematical Model

Through establishing solidification-heat transfer mathematical model of the super heavy steel ingot, the temperature distribution at different moments in the solidification process of steel ingot has been simulated. Based on the simulated temperature field and the law of solute redistribution, the carbon macrosegregation in the solidification process has been calculated. The results show that, the complete solidification time of the 600T steel ingot is 68.34 hours, and positive segregation of carbon forms in the ingot head, and the concentration of carbon near the upper axis which is higher than 81 percent of the ingot’s height is over 2 times than the average value.

scholarly journals Shrinkage Porosity Criterion and Its Application to A 5.5 Ton Steel Ingot

2016 ◽  
Vol 16 (2) ◽  
pp. 27-32 ◽  
Author(s):  
C. Zhang ◽  
Y. Bao ◽  
M. Wang ◽  
L. Zhang
Keyword(s):  
Numerical Simulation ◽  
Mushy Zone ◽  
Pressure Gradient ◽  
Physical Properties ◽  
Steel Ingot ◽  
Threshold Value ◽  
Shrinkage Porosity ◽  
Diameter Ratio ◽  
Solidification Shrinkage ◽  
Ingot Solidification

Abstract In order to predict the distribution of shrinkage porosity in steel ingot efficiently and accurately, a criterion R√L and a method to obtain its threshold value were proposed. The criterion R√L was derived based on the solidification characteristics of steel ingot and pressure gradient in the mushy zone, in which the physical properties, the thermal parameters, the structure of the mushy zone and the secondary dendrite arm spacing were all taken into consideration. The threshold value of the criterion R√L was obtained with combination of numerical simulation of ingot solidification and total solidification shrinkage rate. Prediction of the shrinkage porosity in a 5.5 ton ingot of 2Cr13 steel with criterion R√L>0.21 m · °C1/2 · s−3/2 agreed well with the results of experimental sectioning. Based on this criterion, optimization of the ingot was carried out by decreasing the height-to-diameter ratio and increasing the taper, which successfully eliminated the centreline porosity and further proved the applicability of this criterion.

scholarly journals Contributions related to the control of steel ingot solidification

2014 ◽  
Vol 57 ◽  
pp. 012004 ◽  
Author(s):  
A Socalici ◽  
E Popa ◽  
T Hepuţ ◽  
L Vîlceanu
Keyword(s):  
Steel Ingot ◽  
Ingot Solidification

scholarly journals Forming of Positive Macrosegregations during Steel Ingot Solidification.

1999 ◽  
Vol 39 (4) ◽  
pp. 329-334 ◽  
Author(s):  
Zarko Radovié ◽  
Milisav Lalovié ◽  
Milivoje Tripkovié ◽  
Branislav Jakié
Keyword(s):  
Steel Ingot ◽  
Ingot Solidification
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