The effect of applied load on density–pressure dependence as well as density distribution under axial pressing of powders in closed dies is analyzed. The continuity hypothesis is used for the analysis. The notion of a representative element is introduced. It is established that the size of this element is related to the effective diameter of powder particles. The sensitivity of density–pressure dependence and density distribution to pressing conditions is explained. Some features of axial pressing with a rotating punch are pointed out. The personal contribution of I. D. Radomyselskii to the formulation and solution of basic problems of powder pressing theory is emphasized.
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The authors are grateful to their colleagues, O. V. Mikhailov and A. P. Maidanyuk, for the possibility to use their results.
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Translated from Poroshkovaya Metallurgiya, Vol. 53, No. 3–4 (496), pp. 19–29, 2014.
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Shtern, M.B. Density–Pressure Dependence and Density Distribution During Powder Pressing. Powder Metall Met Ceram 53, 139–147 (2014). https://doi.org/10.1007/s11106-014-9596-0
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DOI: https://doi.org/10.1007/s11106-014-9596-0