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Alternative Method for Determining Compressibility of Powder Systems

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Powder Metallurgy and Metal Ceramics Aims and scope

GOST 25280–90 (CMEA 6741–89, ISO 3927–77) “Metal powders. Method for Determination of Compressibility” is considered. Given the deficiencies revealed, an alternative method for determining the compressibility allowing for the maximum pressure during ejecting of briquettes from cylindrical dies is proposed. The updated comparative method for determining the density includes several stages: (i) compacting lubricant-containing mixtures in lubricated and unlubricated dies and (ii) recompacting lubricated briquettes in a die with bigger diameter. The proposed method can be used for commercial compacting of powders.

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Acknowledgements

Authors are grateful to Mr. Sosnovskii for his assistance in investigating and discussing results.

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Authors and Affiliations

  1. National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine

    A. V. Minitsky & P. I. Loboda

Authors
  1. A. V. Minitsky
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  2. P. I. Loboda
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Correspondence to A. V. Minitsky.

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Translated from Poroshkovaya Metallurgiya, Vol. 56, Nos. 7–8 (516), pp. 79–87, 2017.

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Minitsky, A.V., Loboda, P.I. Alternative Method for Determining Compressibility of Powder Systems. Powder Metall Met Ceram 56, 424–429 (2017). https://doi.org/10.1007/s11106-017-9912-6

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