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Densification of compacts during hydrostatic pressing

  • Theory and Technology of the Component Formation Process
  • Published:
Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    In an investigation into the HSP of ferrite compacts produced by prepressing in a rigid die, a marked anisotropy of deformation, consisting in preferential diametral densification (l R >l A), was observed at all pressures pHSP ≥ ppr.

  2. 2.

    During the HSP of ferrite compacts their relative density was found to grow already at pHSP≥ppr.

  3. 3.

    Prepressing pressure ppr and the geometric factor h/d have a marked effect on the mechanism of densification during HSP only at low pressures (pHSP ≥ 2ppr).

  4. 4.

    The existing hydrostatic pressing equations do not provide an accurate description of the mechanism of densification operating during HSP (particularly at low pressures).

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Literature cited

  1. D. A. Prokoshkin et al., Hot Pressing of Ferrites [in Russian], Metallurgiya, Moscow (1971), pp. 77–120.

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  4. I. B. Maraev et al., “Effect of hydrostatic re-pressing on the physicomechanical properties of highfrequency ferrites,” Transactions of a Scientific and Practical Conference [in Russian], Voronezh (1977), pp. 6–12.

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Authors and Affiliations

  1. Voronezh Polytechnic Institute, USSR

    V. F. Pushkarev, I. B. Maraev & A. V. Ivanov

Authors
  1. V. F. Pushkarev
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  2. I. B. Maraev
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  3. A. V. Ivanov
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Translated from Poroshkovaya Metallurgiya, No. 11(191), pp. 5–9, November, 1978.

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Pushkarev, V.F., Maraev, I.B. & Ivanov, A.V. Densification of compacts during hydrostatic pressing. Powder Metall Met Ceram 17, 824–827 (1978). https://doi.org/10.1007/BF00792445

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  • DOI: https://doi.org/10.1007/BF00792445

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