Nitriding of steels 4Kh5MFS and 5Kh2MNF in a vibrofluidized bed (graphite with a particle size of 0.2–0.4 mm) should be conducted at 540–570° with the ammonia entering below the bed at a rate of 1.1 liter/min, frequency of vibration 22 Hz, amplitude of vibration 2.0 mm, and acceleration of vibration 4g. After 5 h the case depth is 0.25 mm for steel 4Kh5MFS and 0.22 mm for steel 5Kh2MNF.
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Commercial Furnaces with a Fluidized Bed [in Russian], UPI, Sverdlovsk (1976), p. 148.
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 57–58, November, 1978.
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Zavarov, A.S., Ryzhkov, A.F., Tumanova, N.N. et al. Nitriding of die steels 4Kh5MFS and 5Kh2MNF in a vibrofluidized bed. Met Sci Heat Treat 20, 939–940 (1978). https://doi.org/10.1007/BF00713762
- Particle Size
- Case Depth
- Steel 4Kh5MFS