Basic Study for Developing The Efficient Production Method of Fine Uniform Particles
开发高效细均匀颗粒生产方法的基础研究
基本信息
- 批准号:18560165
- 负责人:
- 金额:$ 2.42万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2006
- 资助国家:日本
- 起止时间:2006 至 2007
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The final purpose of this study is to develop the effective production process of fine uniform particles that are suitable for micro-blast-machining. In the present study, the atomization by ultra-rapid spinning of small flat disk was proposed as suitable melt atomization method for the purpose and the validity is investigated through the simulation experiment.The prototype atomizer of ultra-rapid spinning of small flat disk was fabricated, the water atomization test was performed. The atomization pattern transited to fine-ligament type or turbulent film type in the range of high spinning velocity. Owing to the transition the atomizer showed good atomization performance in higher flow rate than the upper limit of atomization which was estimated from previous empirical correlation. The mean diameter of particles and the mean pitch of ligaments were almost agreed with previous empirical correlations and decreased with the increase of spinning velocity.Employing several test liquid, the experimental investigations were performed with changing the properties of liquid, the disk diameter, the spinning velocity and the liquid flow rate. The empirical correlations were obtained for the transition condition of atomization pattern and the pitch of ligament which was concerning directly to the particle diameter. Simple empirical correlation for the range of ligament type atomization was also presented.Based on these results, we projected the atomization test of liquid metal but failed. Aiming to reveal the reasons, the breakup behavior of liquid metal jet into water was observed in detail. The atmospheric condition of jet was controlled electrically. It was supported that the oxidation of metal surface prevent breakup of liquid metal jet and the control of atmospheric condition should play very important role in the melt metal atomization
本研究的最终目的是开发适用于微喷砂加工的细小均匀颗粒的有效生产工艺。本研究提出了小平盘超快速旋转雾化作为适合该目的的熔体雾化方法,并通过模拟实验研究了其有效性。制作了小平盘超快速旋转雾化器原型,进行水雾化试验。在高旋转速度范围内,雾化模式转变为细丝型或紊流膜型。由于转变,雾化器在高于根据先前经验相关性估计的雾化上限的流量下表现出良好的雾化性能。颗粒的平均直径和平均韧带节距与以往的经验关系基本一致,并且随着旋转速度的增加而减小。采用多种测试液体,通过改变液体的性质、盘直径、旋转速度进行了实验研究。速度和液体流速。获得了与粒径直接相关的雾化模式转变条件和韧带节距的经验相关性。还给出了韧带式雾化范围的简单经验关联。基于这些结果,我们预测了液态金属的雾化试验,但失败了。为了揭示原因,详细观察了液态金属射流进入水中的破碎行为。射流的大气条件是电控的。认为金属表面的氧化阻止了液态金属射流的破裂,大气条件的控制在熔融金属雾化中起着非常重要的作用。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Liquid Atomization by Ultra-rapid Spinning of Small Disk(Experimental Observation of Atomization Process)
小圆盘超高速旋转液体雾化(雾化过程实验观察)
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Takashi;SUZUKI;Yuji;TANAKA;Koshi;MITACH
- 通讯作者:MITACH
Liquid Atomization by Ultra-rapid Spinning of Small Disk(Flow pattern of liquid film and breakup pattern)
小圆盘超快速旋转液体雾化(液膜流动模式和破碎模式)
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Takashi;SUZUKI;Yuji;TANAKA
- 通讯作者:TANAKA
Liquid Atomization by Ultra-rapid Spinning of Small Disk(Effects of Liquid Properties upon Breakup Regime)
小圆盘超快速旋转的液体雾化(液体性质对破碎状态的影响)
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Takashi;SUZUKI;Yuji;TANAKA;Hiromitsu;ISHIKAWA
- 通讯作者:ISHIKAWA
小径円盤の超高速回転による液体の微粒化(微粒化過程の瞬間写真観察)
通过小直径圆盘的超高速旋转实现液体雾化(雾化过程的即时摄影观察)
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Takashi;SUZUKI;Yuji;TANAKA;Hiromitsu;ISHIKAWA;鈴木孝司・田中祐治・三田地紘史
- 通讯作者:鈴木孝司・田中祐治・三田地紘史
小径円盤の超高速回転による液体の微粒化(円盤上の液膜の流動形態と微粒化過程の実験観察)
小直径圆盘超高速旋转实现液体雾化(圆盘上液膜流动形态及雾化过程的实验观察)
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:鈴木孝司・加藤聖美・石川政行;鈴木孝司・田中祐治・石川允泰;鈴木孝司・田中祐治
- 通讯作者:鈴木孝司・田中祐治
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SUZUKI Takashi其他文献
SUZUKI Takashi的其他文献
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