Conclusions
In calculating carburizing processes in furnaces with a fluidized bed one can disregard the limiting effect of mass transfer on the surface; the efficiency of the general process of carburizing is fairly accurately described in this case by solving the diffusion equation with first-order boundary conditions. The rate of carburizing in convection furnaces operating with a liquid or gaseous carburizer is slowed down by surface processes. An increase of the carbon diffusion coefficient in the steel as the result of raising the carburizing temperature and increasing the thickness of the layer of soot increases the retarding effect of surface processes.
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Literature Cited
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Additional information
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 53–55, January, 1972.
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Baskakov, A.P., Kirnos, I.V. & Zuikova, N.A. Surface processes in carburizing. Met Sci Heat Treat 14, 55–56 (1972). https://doi.org/10.1007/BF00658349
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DOI: https://doi.org/10.1007/BF00658349