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ASM Handbook

Steel Heat Treating Technologies

Edited by
Jon L. Dossett
Jon L. Dossett
Consultant
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;
George E. Totten
George E. Totten
Portland State University
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ASM International
Volume
4B
ISBN electronic:
978-1-62708-166-5
Publication date:
2014
Book Chapter

Fluidized-Bed Heat Treating Equipment[1]

By
Weimin Gao
Weimin Gao
Institute for Frontier Materials, Deakin University
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;
Lingxue Kong
Lingxue Kong
Institute for Frontier Materials, Deakin University
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;
Peter Hodgson
Peter Hodgson
Institute for Frontier Materials, Deakin University
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Published:
2014
Page range:
233 - 241
Publication history
August 31, 2014

Abstract

This article discusses the important characteristics of fluidized beds. The total space occupied by a fluidized bed can be divided into three zones: grid zone, main zone, and above-bed zone. The article discusses the various types of atmospheres of fluidized beds, such as oxidizing and decarburizing atmosphere; nitrocarburizing and nitriding atmosphere; carburizing and carbonitriding atmosphere; and chemical vapor deposition atmosphere. External resistance heating, external combustion heating, internal resistance heating, direct resistance heating, submerged combustion heating, and internal combustion heating can be used to achieve the heat input for a fluidized bed. The article also describes the operations, design considerations, and applications of fluidized-bed furnaces in heat treating. Thermochemical surface treatments, such as carburizing, carbonitriding, nitriding, and nitrocarburizing, are also discussed. Finally, the article reviews the principles and applications of fluidized-bed heat treatment.

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Weimin Gao, Lingxue Kong, Peter Hodgson, 2014. "Fluidized-Bed Heat Treating Equipment", Steel Heat Treating Technologies, Jon L. Dossett, George E. Totten

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