Abstract
A new compaction method uses a porous female die made of powdered materials without plasticizer. Powders alloyed with carbon, nickel, chromium, molybdenum, and microtalc were used to produce the porous die. The powder was compacted by a special device, in which the operating surface of the matrix was lubricated through the open pores of the powdered material. Compaction of materials into a porous die ensures highly efficient drainage of gases from the press mold. As a result the density of iron-based compacts increases to 7.4–7.7 g/cm3 and in regard to mechanical properties the sintered materials can compete with those obtained by hot forging.
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References
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Additional information
NPO “Bakkonditsioner” (Scientific-Industrial Firm Bakkonditsioner), Baku. Translated from Poroshkovaya Matallurgiya, No. 11–12, pp. 1–6, November–December, 1994.
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Mamedov, A.T. Development of a technology of compaction of increased-density parts using gas drainage methods. IV. Compaction of powder materials without plasticizer. Powder Metall Met Ceram 33, 559–562 (1995). https://doi.org/10.1007/BF00559658
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DOI: https://doi.org/10.1007/BF00559658