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Influence of the geometry of an immersed steel workpiece on mass transfer coefficient in a chemical heat treatment fluidised bed

Gao, Weimin, Long, John, Kong, Lingxue and Hodgson, Peter 2004, Influence of the geometry of an immersed steel workpiece on mass transfer coefficient in a chemical heat treatment fluidised bed, ISIJ international, vol. 44, no. 5, pp. 869-877.

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Title Influence of the geometry of an immersed steel workpiece on mass transfer coefficient in a chemical heat treatment fluidised bed
Author(s) Gao, Weimin
Long, John
Kong, LingxueORCID iD for Kong, Lingxue orcid.org/0000-0001-6219-3897
Hodgson, Peter
Journal name ISIJ international
Volume number 44
Issue number 5
Start page 869
End page 877
Publisher Iron and Steel Institute of Japan
Place of publication Tokyo, Japan
Publication date 2004
ISSN 0915-1559
1347-5460
Keyword(s) fluidised bed
mass transfer
carburising
heat treatment
Summary The mass transfer during carburising in a fluidised bed and in a steel workpiece has been studied experimentally in this work. This involved carburising experiment in an electrically heated fluidised bed at 900–970°C with natural gas and air as the atmosphere. A steel workpiece was designed to provide a range of carbon transfer surfaces of different geometries in the fluidised bed, and the carbon transfer coefficient was measured at these surfaces. The carbon transfer coefficient was determined from the carbon distribution within the diffusion layer of the sample. An empirical relationship of the carbon potential as a function of carburising atmosphere, bed temperature and fluidising velocity was determined, based on the understanding of the mass transfer mechanism and analysis of the experimental results.
Language eng
Field of Research 091399 Mechanical Engineering not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2004, ISIJ
Persistent URL http://hdl.handle.net/10536/DRO/DU:30002827

Document type: Journal Article
Collection: School of Engineering and Technology
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