Simulation of the Solidification Defects in Slender Electrode Ingot

Hu Xiaodong; Sun Xinglong; Xu Changjun; Zhao Hongyang; Li Jing; Zhang Xuejian

doi:10.15980/j.tzzz.2015.10.010

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Simulation of the Solidification Defects in Slender Electrode Ingot
Vol. 35, Issue 10, Pages: 1040-1043(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.10.010

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[1]胡小东,孙兴龙,许长军,赵红阳,李静,张雪健.细长电极锭凝固缺陷的模拟[J].特种铸造及有色合金,2015,35(10):1040-1043.

Hu Xiaodong, Sun Xinglong, Xu Changjun, et al. Simulation of the Solidification Defects in Slender Electrode Ingot. [J]. Special Casting & Nonferrous Alloys 35(10):1040-1043(2015)
[1]胡小东,孙兴龙,许长军,赵红阳,李静,张雪健.细长电极锭凝固缺陷的模拟[J].特种铸造及有色合金,2015,35(10):1040-1043. DOI： 10.15980/j.tzzz.2015.10.010.

Hu Xiaodong, Sun Xinglong, Xu Changjun, et al. Simulation of the Solidification Defects in Slender Electrode Ingot. [J]. Special Casting & Nonferrous Alloys 35(10):1040-1043(2015) DOI： 10.15980/j.tzzz.2015.10.010.

摘要

以高径比为9的细长电极锭为研究对象

利用AnyCasting软件对该锭凝固过程进行数值模拟

并依据Niyama判据

对凝固缺陷的产生进行预测

分析冒容比、发热剂发热时间、浇注温度和浇注速度等工艺参数对凝固缺陷的影响。模拟结果表明

利用AnyCasting模拟出细长电极锭的凝固缺陷主要分布在冒口顶部和电极锭心部

和实际凝固过程中产生缺陷部位基本一致;冒容比为10%

发热剂发热60min

浇注温度为1 560℃和浇注速度为0.65m/s时

可有效改善电极锭的缺陷

得到品质合格的电极锭。

Abstract

Solidification defects in slender electrode ingot with the ratio of height and diameter of 9.0were predicted by Niyama rule in AnyCasting software to understand effects of the ratio of the riser and the mold

the time of the heating agent

the pouring temperature and casting speed.The simulation results reveal that possible defects in the slender electrodes ingot are located at top of the riser and center of electrode ingot

which is well agreement with practical ones.With optimized processing parameters

such as the ratio of the riser and the mold of 10%

the time of the heating agent of 60 min

the pouring temperature of 1 560 ℃and the pouring speed of 0.65m/s

the electrode ingot defects including shrinkage porosity and hole can be decreased effectively.