Influence of Mould Slenderness Ratio on the Solidification of Heavy Ingots by Numerical Simulation

摘要

The quality of heavy ingot normally depends on the processing factor and ingot mouldtype. Based on the ingot mould type only, the quality and solidification process of a 96-ton ingotmoulds with different slenderness-ratios have been studied numerically using the software packagePr°CAST. The results show that the position of shrinkage porosity moves up and the macroporosityin the ingot center increases prominently as slenderness-ratio increasing, meanwhile, the inclusionfloatingtime through the middle and bottom part of ingot decreases, and A-segregation alleviates aswell. The correlation between the quality and slenderness-ratio of the ingot is not a liner relationship,when the slenderness ratio is 1.4, the ingot has better quality.