| 脉冲磁场下电磁力特性研究:理论分析 |
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| 引用本文： | 华骏山,张永杰,王恩刚,赫冀成. 脉冲磁场下电磁力特性研究:理论分析[J]. 东北大学学报(自然科学版), 2011, 32(1): 72-75. DOI: - |
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| 作者姓名： | 华骏山 张永杰 王恩刚 赫冀成 |
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| 作者单位： | 东北大学,材料电磁过程教育部重点实验室,辽宁,沈阳,110819;东北大学,材料电磁过程教育部重点实验室,辽宁,沈阳,110819;宝钢研究院,上海,201900 |
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| 基金项目： | 国家高技术研究发展计划项目(2001AA337040); 国家自然科学基金资助项目(50604005,50834009) |
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| 摘 要： | 利用数学解析方法对脉冲磁场细晶技术的电磁力特性进行了理论分析.分析结果显示,单个放电周期内,随着时间变化,熔体内部脉冲电磁力方向发生瞬时改变;在某个时间段范围内,熔体内部与外部存在电磁力方向不一致的现象,而且单个周期内电磁力存在衰减特性.以上这些特性,是造成脉冲磁场致熔体振荡的主要原因.另外,对于本研究采用的工频脉冲磁...
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| 关 键 词： | 脉冲磁场 电磁力 晶粒细化 共振效应 |
On the Characteristics of Pulsed Electromagnetic Force:Theoretical Analysis |
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| HUA Jun-shan,ZHANG Yong-jie,WANG En-gang,HE Ji-cheng. On the Characteristics of Pulsed Electromagnetic Force:Theoretical Analysis[J]. Journal of Northeastern University(Natural Science), 2011, 32(1): 72-75. DOI: - |
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| Authors: | HUA Jun-shan ZHANG Yong-jie WANG En-gang HE Ji-cheng |
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| Affiliation: | HUA Jun-shan1,ZHANG Yong-jie1,2,WANG En-gang1,HE Ji-cheng1(1.Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern University,Shenyang 110819,China,2.Baosteel Research Institute,Shanghai 201900,China.) |
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| Abstract: | The characteristics of PMF(pulsed magnetic field) force for grain refinement in solidification process was analyzed through mathematical analytic method.The main peculiarities of PMF force were shown as follows: It was found that the direction of PMF forces changes instantaneously in an individual impulse discharging period,and the PMF forces inside and outside the melt are in different directions in a certain period.In addition,the PMF force is attenuating in an individual impulse discharging period.All th... |
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| Keywords: | pulsed magnetic field electromagnetic force grain refinement resonance |
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