Carburising and carbon transfer coefficient in a fluidised bed furnance
Gao, Weimin, Kong, Lingxue, Long, John and Hodgson, Peter 2003, Carburising and carbon transfer coefficient in a fluidised bed furnance, in ICME 2003 Conference proceedings, 13-15 Oct., 2003, Carlton Crest Hotel, Melbourne Australia., the Conference, Melbourne, Vic.
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Carburising and carbon transfer coefficient in a fluidised bed furnance
The carburising of a steel workpiece with complex geometry in a fluidised bed hasbeen studied experimentally. This involved carburising experiment in an electrically heated fluidised bed at 900 - 970°C with natural gas and air as the atmosphere. The carbon transfer coefficient at the workpiece surface and diffusivity within the workpiece were determined from the carbon distribution within the diffusion layer of the sample. A reverse method and the Levenberg-Marquardt algorithm were used in the calculations. The methodology of the reverses method to extract the carbon transfer coefficient and diffusivity is also discussed in some detail.