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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。
Taking the slender electrode ingot with a height-diameter ratio of 9 as the research object, AnyCasting software was used to simulate the solidification process of the ingot. According to the Niyama criterion, the occurrence of solidification defects was predicted. , Pouring temperature and pouring speed and other process parameters on the impact of solidification defects. The simulation results show that the solidification defects of the slender electrode ingot simulated by AnyCasting are mainly distributed on the top of the riser and the heart of the electrode ingot, which are basically the same as those produced during the actual solidification. The capping ratio is 10%, the heating agent generates 60min, Pouring temperature of 1 560 ℃ and pouring speed of 0.65m / s, can effectively improve the defects of the electrode ingot to obtain qualified electrode ingot.