Transactions of Materials and Heat Treatment

Title：Comparative analysis on fixedmandrel drawing and floatingmandrel drawing for thinwalled copper tube

Authors： Xu Yongqiang Jiang Zhihong Zeng Yanxiang Hu Pei

Unit： Jiangxi University of Science and Technology

KeyWords： fixedmandrel drawing floatingmandrel drawing numerical simulation drawing force thinwalled copper tube

ClassificationCode：TG394

year,vol(issue):pagenumber：2017,42(6):88-91

Abstract：

In order to improve the forming quality of thinwalled copper tube after drawing, the influences of different drawing processes on formability of thinwalled copper tube were studied. Then, the finite element models for two kinds of drawing processes were established by finite element software MARC, and the influences of fixedmandrel drawing and floatingmandrel drawing for
the thinwalled copper tube on drawing force， equivalent stress and strain and residual stress after drawing were comparatively analyzed. The results show that under the same process parameters, comparing with the fixedmandrel drawing, the floatingmandrel drawing requires smaller drawing force, the equivalent stress is relatively smaller with equal equivalent strain, the residual stresses along the axial and circumferential directions are smaller and more uniform distribution, and the residual stresses in the radial direction are close to 0. However, the floatingmandrel drawing is helpful to improve the product quality of thinwall copper tube without considering other factors.

Funds：

国家自然科学基金资助项目（50665003,51464017）

许永强（1992-），男，硕士研究生姜志宏（1977-），男，硕士，副教授

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