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交替復(fù)合磁場去除鋁熔體中夾雜物的研究
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清華大學,清華大學,清華大學,清華大學

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中圖分類號:

TG249.9

基金項目:

國家自然科學基金項目（面上項目，重點項目，重大項目）


Investigation on the Removal of Inclusions Form Aluminum Melt Using Alternating Combined Magnetic Field
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Tsinghua University,Tsinghua University,Tsinghua University,Tsinghua University

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    摘要:

    本文將鋁硅過共晶合金凝固過程中析出的初生硅顆粒視為鋁熔體中的夾雜物顆粒，研究了由交替旋轉(zhuǎn)磁場和下行波磁場組成的交替復(fù)合磁場對鋁熔體中夾雜物的去除效果。結(jié)果表明，在交替復(fù)合磁場作用下，夾雜物顆粒發(fā)生了明顯的聚合并遷移至頂部被除去。對比發(fā)現(xiàn)交替復(fù)合磁場的除雜效果要優(yōu)于單向旋轉(zhuǎn)磁場和下行波磁場組成的單向復(fù)合磁場。隨著交替復(fù)合磁場中的交替旋轉(zhuǎn)磁場的頻率和電流的增加，磁場除雜效果顯著上升。交替時間為10s時磁場除雜效果最佳。

    Abstract:

    In this study, the effect of alternating combined magnetic field composed (CMF) of downward travelling magnetic field (TMF) and alternating rotating magnetic field (RMF) to remove the inclusions from aluminum melt was investigated and primary silicon particles precipitating from the solidification of Al-Si hypereutectic alloy were regarded as inclusions need removing. Inclusions particles agglomerated into clusters and migrated to the top of the melt under alternating CMF. It was found alternating CMF had a better removing effect than oriented CMF composed of oriented RMF and downward TMF. The removing effect of alternating CMF increased when the current and frequency of alternating RMF consisting of alternating CMF increased. Alternating CMF had the best removing effect when the alternating time was at 10s.

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高敏銳,李丘林,楊定國,劉偉.交替復(fù)合磁場去除鋁熔體中夾雜物的研究[J].稀有金屬材料與工程,2016,45(5):1335~1339.[Gao Minrui, Li Qiulin, Yang Dingguo, Liu Wei. Investigation on the Removal of Inclusions Form Aluminum Melt Using Alternating Combined Magnetic Field[J]. Rare Metal Materials and Engineering,2016,45(5):1335~1339.]
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  • 收稿日期:2014-05-13
  • 最后修改日期:2014-06-06
  • 錄用日期:2014-07-01
  • 在線發(fā)布日期: 2016-06-02
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