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Properties of bearing steel extruded from powder obtained by spraying of molten production chips

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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

Bearing steel bars may be produced by extrusion of powder produced by spraying of molten production chips with nitrogen. This makes it possible to introduce recycling of metal scrap in the production plant.

Extruded powder metallurgy steel has the same density as cast steel and is at least as good in mechanical properties.

The fracture toughness of the extruded steel in relation to austenitizing temperature is lower than for rolled steel. Heat treatment produces high strength properties. The extruded powder metallurgy steel has higher contact resistance than the cast. As the result of annealing of extruded powder metallurgy bearing steel a more uniform relationship of contact resistance to austenitizing temperature is obtained.

It would be desirable to more thoroughly investigate the extrusion conditions, particularly the temperature and degree of reduction, and also the heat treatment conditions of extruded powder metallurgy steel in order to determine the possibilities of increasing its physicomechanical properties.

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Authors and Affiliations

  1. The Scientific-Research Institute for Efficiency in Bearings, Zilina, Czechoslovak SR

    A. Shalak, V. S. Ivanov, M. Seletska & P. Veles

  2. The Institute for Experimental Metallurgy, Kosice, Czechoslovak SR

    A. Shalak, V. S. Ivanov, M. Seletska & P. Veles

  3. The Institute of Metallurgy of the Academy of Sciences of the Ukrainian SSR, Ukraine

    A. Shalak, V. S. Ivanov, M. Seletska & P. Veles

Authors
  1. A. Shalak
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  2. V. S. Ivanov
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  3. M. Seletska
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  4. P. Veles
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Additional information

Translated from Poroshkovaya Metallurgiya, No, 3(339), pp. 29–34, March, 1991.

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Shalak, A., Ivanov, V.S., Seletska, M. et al. Properties of bearing steel extruded from powder obtained by spraying of molten production chips. Powder Metall Met Ceram 30, 192–196 (1991). https://doi.org/10.1007/BF00794904

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  • DOI: https://doi.org/10.1007/BF00794904

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