Transactions of Materials and Heat Treatment

Title：Calculation and analysis of tube expanding force

Authors： HU Nian-jun LIN Da-wei (School of Materials Science and Engineering Shanghai University Shanghai 200072 China)

Unit：

KeyWords： tube expanding slab method friction coefficient

ClassificationCode：TG386

year,vol(issue):pagenumber：2006,31(2):32-33

Abstract：

The formula of tube expanding force is deduced using the slab method. The tube expanding force increases with the increasing of expanding coefficient Ψ and combination coefficient B. The experiments of tube expanding are carried out and the tube expanding forces are measured. The friction coefficients are calculated according to some measured tube expanding force values. Tube expanding forces resulted from different punch angles are predicted by using the formula of tube expanding force and the average friction coefficient. The calculated expanding forces show good agreement with the measured results when the punch angle is smaller.

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Reference：

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