• Title/Summary/Keyword: Ball powder

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Particle Morphology Change and Quantitative Input Energy Variation during Stirred Ball Milling Process by DEM Simulation on Various Experimental Conditions (교반볼밀을 이용한 밀링공정에서 각종실험조건에 따른 구리분말의 입자형상 변화 및 DEM 시뮬레이션에 의한 정량적 에너지 변화)

  • Bor, Amgalan;Batjargal, Uyanga;Jargalsaikhan, Battsetseg;Lee, Jehyun;Choi, Heekyu
    • Korean Journal of Materials Research
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    • v.28 no.3
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    • pp.148-158
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    • 2018

  • This study investigated the effect of the grinding media of a ball mill under various conditions on the raw material of copper powder during the milling process with a simulation of the discrete element method. Using the simulation of the three-dimensional motion of the grinding media in the stirred ball mill, we researched the grinding mechanism to calculate the force, kinetic energy, and medium velocity of the grinding media. The grinding behavior of the copper powder was investigated by scanning electron microscopy. We found that the particle size increased with an increasing rotation speed and milling time, and the particle morphology of the copper powder became more of a plate type. Nevertheless, the particle morphology slightly depended on the different grinding media of the ball mill. Moreover, the simulation results showed that rotation speed and ball size increased with the force and energy.

  • https://doi.org/10.3740/MRSK.2018.28.3.148 인용 PDF KSCI

A comparative study of grinding mill type on aluminium powders with carbon nano tube: traditional ball mill and planetary ball mill

  • Choe, Hui-Gyu;Choe, Gyeong-Pil;Bae, Dae-Hyeong;Lee, Seung-Baek;Lee, Ung;Kim, Seong-Su
    • Proceedings of the Materials Research Society of Korea Conference
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    • 2009.11a
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    • pp.27.2-27.2
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    • 2009

  • Grinding characteristics for aluminium and carbon nanotubes (CNTs) powder during traditional and planetary ball milling investigated from the viewpoint of particle behaviour with the aimat developing CNT-dispersed samples ground based on powder metallurgy routes.In this work, a comparison between the pure aluminium and CNT input aluminium grinding was carried out to determine grinding time effect on size reduction.We observed that the use of the curly small-diameter multi-walled carbon nanotubes (MWCNTs) attributed to the beneficial role of the MWCNTs as grinding aids. It is suggested that careful choices of the sizes of CNTs and Al powders would allow fine-grinding of composite particles with uniformly distributed CNT reinforcements thereby ensuring improved properties of the final composites produced by low-temperature compacting.

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