张勇,徐建宁,章娅菲,宋梅梅,管争荣,夏盛勇

• 1:西安石油大学机械工程学院

摘要(Abstract)：

考虑了化学反应及压力梯度力,对等离子喷涂流场分布及颗粒运动特性进行研究。利用Spray Watch-2i对飞行颗粒进行在线监测。结果表明:气流的最高温度为12000 K,最高速度为150 m/s。当载气流量在4 L/min时,颗粒能够很好的加热加速。当送粉流道与射流方向垂直时,颗粒分布在流场外围,而当送粉流道与流场垂直方向倾斜8°夹角后,颗粒的运动轨迹偏向流场中心。当颗粒直径为10μm时,颗粒能够被载气送入到射流中心位置。而当颗粒直径逐渐增大时,颗粒穿过射流中心分布在流场外围。颗粒的最大速度达到270.9 m/s,最大温度达到3939 K。最佳喷涂距离为80 mm。

关键词(KeyWords)： 等离子喷涂;流场分布;颗粒;加热;加速

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张勇,徐建宁,章娅菲,宋梅梅,管争荣,夏盛勇

DOI: 10.13289/j.issn.1009-6264.2017-0253

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