• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Numerical study on the removal and distribution of non-metallic inclusions in electroslag remelting process
【24h】

Numerical study on the removal and distribution of non-metallic inclusions in electroslag remelting process

机译：电渣重熔过程中非金属夹杂物去除与分布的数值研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A transient model coupling the magnetohydrodynamic flow and heat transfer is developed to predict the removal and distribution of non-metallic inclusions in electroslag remelting process. The interaction between the melt and non-metallic inclusions was described by two-way coupled Euler-Lagrange method. Both original inclusions from electrode and newly precipitated ones with solidification were considered. The effect of current on the inclusion behaviour was also studied. The model was validated by experiments. The overall removal ratio of original inclusions 2-20 mu m in diameter increases from 80.47% to 94.75%. The inclusions with 30 mu m even is completely removed. A proper increase of current is conductive to the removal efficiency. In the mushy zone the drag force and buoyancy force play a major role in the entrapment and distribution of newly precipitated inclusions. The inclusion amount increases along radius, but slightly decreases when ranging from 0.9 to 1.0 radius in the solidified ingot. The buoyancy force is great enough for almost all of the 20 mu m inclusions to escape from the mushy zone. The absorption ratio of inclusions into slag decreases from 50.5% to 28.7% when the current increases from 3100 A to 3700 A due to the increase of solidification rate. (C) 2019 Elsevier Ltd. All rights reserved.
机译：建立了耦合磁流体动力流和热传递的瞬态模型，以预测电渣重熔过程中非金属夹杂物的去除和分布。熔体与非金属夹杂物之间的相互作用通过双向耦合欧拉-拉格朗日方法进行了描述。既考虑了电极的原始夹杂物，也考虑了凝固后新沉淀的夹杂物。还研究了电流对夹杂行为的影响。通过实验验证了该模型。直径2-20微米的原始夹杂物的总去除率从80.47％增加到94.75％。甚至清除了30微米的夹杂物。适当增加电流有助于去除效率。在糊状区，阻力和浮力在新沉淀的夹杂物的包裹和分布中起主要作用。夹杂物的量沿半径增加，但在凝固的铸锭中，当夹杂物的半径在0.9到1.0范围内时，夹杂物的数量略有减少。浮力足够大，几乎所有20微米的夹杂物都能从泥泞的区域中逸出。当电流从3100 A增加到3700 A时，由于凝固速率的增加，夹杂物对炉渣的吸收率从50.5％降低到28.7％。 （C）2019 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号