粉粒体の圧縮充てんに及ぼす粒度分布の影響*

概要

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The theoretical considerations on the packing characteristics of powder bed, using the components so called "gap grading" powder systems, were already performed by Westman and Hugill in 1930.McGeary investigated these properties more accurately in 1961, using many sphere-like powders.<BR>These investigations were limited to the study of the relation between the groups having equal diameters respectively. The study of the relation having continuous grading has in this way beenrarely made hitherto.<BR>In this paper, observation has been made of the packing characteristics of the two-component powder systems having a diameter ratio nearly of unity.<BR>The theoretical equation (3) was delivered in the range of high concentration of the coarser grains, and the equation (4) was determined too in their low concentration respectively.<BR>To ascertain the validity of there equations, several powders illustrated in Table I and II, were used, and the results obtained from these measurements perfectly agreed with the tendency concluded from the equations (3) and (4).
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