Conclusions
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1.
Liquid low-temperature cyaniding substantially increases the wear resistance, fatigue limit, and corrosion resistance of steels.
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2.
The optimal cyaniding conditions ensure obtaining a high-quality diffusion coating with the best combination of mechanical properties. For low-carbon steels of the 20, 20Kh, and 20KhN type the optimal cyaniding conditions are 570\dg for 1\2-1.5 h; for improved steels of the 40, 40Kh, and 40KhN type they are 570\dg for 2\2-2.5 h; for improved high-alloy steels they are 570\dg for 3\2-3.5 h.For parts of complex shape with technological stress concentrators we recommend increasing the processing time by 0.5–1 h.
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3.
We showed that it is possible to use domestic salts for low-temperature cyaniding.
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Literature cited
V. V. Bogdanov et al., Metal. i Term. Obrabotka Metal., No. 4 (1968).
Additional information
Moscow Highway Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 45–49, October, 1970.
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Neustroev, G.N., Bogdanov, V.V. Low-temperature cyaniding of structural steels. Met Sci Heat Treat 12, 856–859 (1970). https://doi.org/10.1007/BF00654476
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DOI: https://doi.org/10.1007/BF00654476