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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 1    February 2001

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Huadong sintering model about expansion and shrinkage
DING Hua-dong(丁华东)

Department of Materials Science and Engineering,
Armored Force Engineering Institute, PLA, Beijing 100072, P.R.China

Abstract:The whole sintering course from the beginning of heating to the end of heat preservation stage was studied by taking into account the influence of pressing. It was found that there exist expanding mechanism and shrinking mechanism in the sintering process, and the expanding mechanism is always acting before the shrinking mechanism. Whether the sintering body shrinks or expands depends on the interaction between the two mechanisms. And according to this, the Huadong sintering model in account of expansion and shrinkage mechanism was given.

 

Key words: powder metallurgy; sintering model; sintering mechanism; expanding mechanism; shrinking mechanism

ISSN 1672-7029
CN 43-1423/U

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