Modeling of Maximum Spread Variation of Workpiece under High Speed Deformation in Rod Rolling Process


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A maximum spread model dependent on rolling speed is proposed for rod rolling process following the analysis of deformation behavior of steel under compression and four-pass continuous high speed rod rolling test. Results reveal that amount of spread depends on a region which restricts plastic flow of workpiece during deformation. Increasing rolling speed (strain rate) leads to decrement of friction coefficient and, in turn, enlarge deformation-restricted region in the workpiece and consequently reduce amount of spread during deformation. Hence, the rolling speed dependent spread model could be expressed in terms of flow stress, which is a function of strain, strain rate and temperature and finally the model is proposed in a concise form.



Key Engineering Materials (Volumes 345-346)

Edited by:

S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim




Y. S. Lee "Modeling of Maximum Spread Variation of Workpiece under High Speed Deformation in Rod Rolling Process ", Key Engineering Materials, Vols. 345-346, pp. 967-970, 2007

Online since:

August 2007





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