• 제목/요약/키워드: 애토마이저

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Atomize법에 의한 용융소재의 고효율 미세화에 관한 연구 (제3보 : 애토마이저의 미립화 기구와 특성) (A STUDY ON HTGH-EFFICIENCY ATOMIZATION OF MOLTEN MATERIALS (PART 3 : MECHANISM AND CHARACTERISTICS OF ATOMIZATION))

  • 오재건;권순익
    • 한국분무공학회지
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    • 제4권1호
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    • pp.19-26
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    • 1999
  • An experimental study of twin-fluid atomization for powder metallurgy has been conducted using a specially designed atomizer in which liquid is first spread into a thin sheet and then exposed on both sides to high-velocity air. Inner air jet worked for supplying liquid and outer air jets disintegrated liquid sheet. The first result of this study were confined to the effect of atomizing quality through experiments with water. The experimental data will be extend to include the influence of atomizing air velocities on mean particle size through experiments with molten material. An experimental equation on the relationship between SMD and the related parameters was taken out; $$SMD=0.00302\frac{{(\sigma_L\;\rho_L\;D_L)}^{0.5}}{\rho_A(V_1+1.155\;V_2)/2}(1+\frac{W_L}{(W_{A1}/3.33)+W_{A2}})+0.0148(\frac{{\mu_L}^2}{\sigma_L\;\rho_L})^{0.425} \;{D_L}^{0.575}(1+\frac{W_L}{(W_{A1}/3.33)+W_{A2}})^2$$.

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Atomize 법에 의한 용융소재의 고효율 미세화에 관한 연구 (제1보:공기제트에 의한 액체의 공급기구) (A STUDY ON HIGH-EFFICIENCY ATOMIZATION OF MOLTEN MATERIALS (PART 1: AN EXPERIMENTAL STUDY ON SUPPLYING MECHANISM BY AIR JETS))

  • 오재건;이충원;석지권
    • 한국분무공학회지
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    • 제2권2호
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    • pp.35-42
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    • 1997
  • An innovating technique of atomizer has been proposed to supply and to atomise molten materials. Both of a simple geometry of nozzle and an improved nozzle have been fabricated in the present study. With these nozzles, characteristics of the suction and disintegration have been empirically investigated. The important conclusions are as follows; In the case of a simple nozzle: 1) Although the sucking up and supplying of molten materials are available, the applications of powder metallurgy are limited. 2) It is concluded that the more air flow rate, $W_A$ or the shorter the height of air nozzle from the surface of supplied water, $L_h$, the more the atomizing mass of liquids, $W_L$. In the case of an improved nozzle: 3) The stable liquids can be supplied due to cut off the passage of surrounding air entrainment by air jets. 4) The atomizing mass of liquids, $W_L$ has affected not so much on the height of nozzle from the surface of supplied water, $L_h$ as that from the orifice, hc.

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