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Aluminizing automotive valves


  1. 1.

    Aluminization and high-frequency of valves made of Kh9S2 and Kh10S2M steelsproduces a hard, heat-resistant aluminized layer with excellent adherence to the base metal.

  2. 2.

    The aluminized layer has a complex structure in which the phases are distributed according to the iron-aluminum phase diagram.

  3. 3.

    The optimal aluminization conditions in the case of heating with current from an ordinary machine generator are: 25–30 kw of power from the generator, a heating time of 14–16 sec, and a layer 40–60 μ thick.

  4. 4.

    When high-frequency heating is used it is necessary to compress the aluminized face of the valve to obtain a very smooth surface.

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Literature cited

  1. 1.

    R. F. Meil', Uspekhi fizicheskikh nauk, No. 19 (1938).

  2. 2.

    N. S. Kumakov, Iron-Aluminum Alloys. Collection of Selected Papers [in Russian], Vol. 2, Moscow-Leningrad (1939).

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 61–63, May, 1963

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Platonov, V.M., Kreshtakova, G.P. Aluminizing automotive valves. Met Sci Heat Treat 5, 300–304 (1963).

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  • Phase Diagram
  • Base Metal
  • Smooth Surface
  • Heating Time
  • Aluminize Layer