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Development of a technology for pressing high-density products using gas-draining methods

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Abstract

The factors that hinder the formation of high-density compacts by cold-pressing of powders are considered. The main factors are the gases present in the charge and the technological lubricant introduced to facilitate the work of the press mold. A procedure has been developed for calculating the efficiency of gas drainage from a mold and the pressure in gas pores in the compacts. Recommendations are made for increasing the density of compacts from iron powders by a single cold pressing.

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References

  1. 1.

    A. T. Mamedov,“Development of scientifically substantiated processes in the production of powder materials with a heterogeneous structure from a mixture of iron, nonferrous, and pig iron powders using gas-drainage methods,” Doctoral Dissertation [in Russian], Minsk (1991).

  2. 2.

    V. N. Antsiferov, G. V. Bobrov, L. K. Kruzhkin, et al., Powder Metallurgy and Metal Spraying [in Russian], Metallurgiya, Moscow (1987).

  3. 3.

    Kh. I. Imanov, V. A. Geidarov, A. T. Mamedov, and T. N. Kornev,“Some aspects of pore formation during pressing of powder-metallurgy products,”in: Effect of Technological Factors on the Structure and Properties of Structural Materials [in Russian], Baku (1986), pp. 42–45.

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Additional information

Scientific-Industrial Firm“Bakkonditsioner,”Baku. Translated from Poroshkovaya Metallurgiya, No. 5–6, pp. 34–39, May–June, 1994.

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Mamedov, A.T. Development of a technology for pressing high-density products using gas-draining methods. Powder Metall Met Ceram 33, 249–253 (1995). https://doi.org/10.1007/BF00560191

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Keywords

  • Iron
  • Mold
  • Iron Powder
  • Press Mold
  • Technological Lubricant