Resource-saving methods of nitriding steel in a closed volume

Conclusions

  1. 1.

    Low-waste controllable methods of nitriding in a closed volume providing nitrided cases with the specified phase composition and a reduction in ammonia consumption of 2–10 times have been developed.

  2. 2.

    The method of cyclic (pulsed) nitriding in a closed volume includes periodic delivery of a portion of the impregnating medium and a controlled hold in the closed working volume of the furnace until complete utilization of its impregnating capacity.

  3. 3.

    Combined two-stage nitriding includes continuous nitriding in the first stage of the process and diffusion annealing in an atmosphere of nitrogen or dissociated ammonia in a closed volume in the second stage of impregnation.

This is a preview of subscription content, access via your institution.

Literature cited

  1. 1.

    Yu. M. Lakhtin and Ya. D. Kogan, Nitriding of Steel [in Russian], Mashinostroenie, Moscow (1976).

    Google Scholar 

  2. 2.

    A. N. Minkevich, Chemicothermal Treatment of Metals and Alloys [in Russian], Mashinostroenie, Moscow (1965).

    Google Scholar 

  3. 3.

    B. S. Bokshtein, Diffusion in Metals [in Russian], Metallurgiya, Moscow (1978).

    Google Scholar 

  4. 4.

    M. E. Blanter, The Theory of Heat Treatment [in Russian], Metallurgiya, Moscow (1984).

    Google Scholar 

  5. 5.

    V. Zabavnik, “Two-step nitriding in ammonia and nitrogen,” Metalloved. Term. Obrab. Met., No. 3, 15–17 (1967).

    Google Scholar 

Download references

Authors

Additional information

Moscow Automobile Road Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 2–4, May, 1991.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Kogan, Y.D., Konovalov, Y.A. Resource-saving methods of nitriding steel in a closed volume. Met Sci Heat Treat 33, 339–344 (1991). https://doi.org/10.1007/BF00775580

Download citation

Keywords

  • Nitrogen
  • Atmosphere
  • Ammonia
  • Furnace
  • Nitrided