EFFECT OF THERMAL CONDUCTIVITY ON THE COOLING PROCESS OF FUSED ZIRCONIA CORUNDUM BRICK

机译：热导率对熔融氧化锆刚玉砖冷却过程的影响

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In order to improve the shrinkage defects of fused zirconia corundum brick(AZS), reduce production costs, and optimize the production process, we use Any-casting software to simulate the brick filling and cooling process, to reveal effects of thermal conductivity of AZS on the solidification time, solidification fraction, temperature gradient and defect probability. The results show that: if the material's thermal conductivity is 1.25865～2.5173 W·m~(-1)k~(-1) at room temperature, and when the melt at the center of the bottom surface of riser does not flow, the casting solidification fraction is big, the solidification time is short, the temperature gradient is large, and the shrinkage probability distribution range is small. It means the shrinkage or porosity is not easy to be produced. The best room temperature thermal conductivity of our simulation is 1.6782 W·m~(-1)k~(-1) . This work was supported by Project of the National Natural Science Foundation of China (51372229), National Twelfth Five-Year Technology Support Program (2013BAE03B01) and Zhengzhou Technology Innovation Team (131PCXTD602).

机译：为了改善电熔法氧化锆刚玉砖的收缩缺陷，降低生产成本，优化生产工艺，我们使用Any-casting软件模拟了砖的充填和冷却过程，揭示了AZS的导热性对凝固时间，凝固分数，温度梯度和缺陷概率。结果表明：在室温下，如果材料的导热系数为1.25865〜2.5173 W·m〜（-1）k〜（-1），且立管底面中心的熔体不流动时，则铸件凝固分数大，凝固时间短，温度梯度大，收缩概率分布范围小。这意味着不容易产生收缩或孔隙率。我们的模拟中最佳的室温导热系数为1.6782 W·m〜（-1）k〜（-1）。这项工作得到了国家自然科学基金项目（51372229），国家“十二五”技术支持计划（2013BAE03B01）和郑州技术创新团队（131PCXTD602）的支持。

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来源
《IUPAC 10th International conference on novel materials and their synthesis: Book of abstracts》|2014年|P77-P77|共1页
会议地点 Zhengzhou(CN)
作者
SiyaoQi; Daoyuan Yang; Xiaobing Li; Minxiao Ma; Ruoyang Liu; Yue Chu;
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作者单位

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;

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原文格式 PDF
正文语种 eng
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Fused zirconia corundum brick; Thermal conductivity; Solidification fraction; Solidification time; Niyama criterion;

机译：熔融氧化锆刚玉砖；导热系数;凝固分数；凝固时间；尼山准则;

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EFFECT OF THERMAL CONDUCTIVITY ON THE COOLING PROCESS OF FUSED ZIRCONIA CORUNDUM BRICK

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