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。
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.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2015年第10期1040-1043,共4页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助项目(51474125)
辽宁科技大学科研专项基金资助项目(009624)
关键词
细长电极锭
凝固
缺陷
工艺参数
数值模拟
Slender Electrode Ingot
Solidification
Defects
Technological Parameters
Numerical Simulation
