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.
The aluminized layer has a complex structure in which the phases are distributed according to the iron-aluminum phase diagram.
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.
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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R. F. Meil', Uspekhi fizicheskikh nauk, No. 19 (1938).
N. S. Kumakov, Iron-Aluminum Alloys. Collection of Selected Papers [in Russian], Vol. 2, Moscow-Leningrad (1939).
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). https://doi.org/10.1007/BF00649343
- Phase Diagram
- Base Metal
- Smooth Surface
- Heating Time
- Aluminize Layer