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钨粉注入对等离子温度的影响效应及球化实验研究
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作者单位:

1.电子科技大学信息地学研究中心;2.核工业西南物理研究院;3.南华大学电气工程学院

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基金项目:

国家自然科学基金资助(项目号11805058,11535003),四川省青年科技创新研究团队专项计划(项目号2016TD0015)


Experimental Investigation on the effect of Tungsten Powder Injection on the Plasma Temperature and Powder Spheroidization
Author:
Affiliation:

1.University of Electronic Science and Technology of China;2.Southwestern Institute of Physics

Fund Project:

National Natural Science Foundation of China (Grant Nos.11805058, 11535003), Special Plan of Youth Science and Technology Innovation Research Team of Sichuan Province (Grant No.2016TD0015)

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    摘要:

    对前驱体粉体颗粒注入到等离子中的等离子温度变化情况进行研究可为粉体球化工艺优化提供参考。本文采用单一因素法研究了钨(W)粉注入前后不同功率及不同位置处等离子射流发射光强及温度的变化规律,并对粒度D50=20±5μm的W粉进行了球形化处理及性能表征。结果表明:W粉颗粒的注入使等离子发射光强、温度均下降;随着功率增加,对等离子温度的影响效应减弱;当P=56kW时,球化率与卫星率分别约为95%和21%,粉体的流动性及密度均明显改善。

    Abstract:

    An experimental investgation on the plasma temperature after the precursor powder injection can provide a reference for the process optimization in plasma spheroidization. The effect of tungsten powder injection on the intensity of emission spectrum and plasma temperature were investigated at different position and RF power with a single factor method, and the tungsten powder with the particle size of D50=20±5μm was spheroidization treatment. The results show that the emission intensity and temperature of plasma jets was both decreased after tungsten powder injection. The effect of plasma temperature was weakened with the increase of RF power, and the spheroidization and satellite ratio were about 95% and 21% when P=56kW, respectively. The flow ability and density of powder were significantly improved after plasma spheroidization.

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陈伦江,陈文波,刘川东,童洪辉,赵青.钨粉注入对等离子温度的影响效应及球化实验研究[J].稀有金属材料与工程,2019,48(10):3221~3226.[chenlunjiang, chenwenbo, liuchuandong, tonghonghui, zhaoqing. Experimental Investigation on the effect of Tungsten Powder Injection on the Plasma Temperature and Powder Spheroidization[J]. Rare Metal Materials and Engineering,2019,48(10):3221~3226.]
DOI:10.12442/j. issn.1002-185X.20181068

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  • 收稿日期:2018-10-20
  • 最后修改日期:2018-11-30
  • 录用日期:2018-12-05
  • 在线发布日期: 2019-11-01
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