Effect of die geometry on residual stress level present after bar drawing

被引:15
作者
Kuboki, T
Akiyama, M
Neishi, Y
Kuroda, K
机构
[1] Sumitomo Met Ind Ltd, Corp Res & Dev Labs, Bar & Wire Proc Dev Sect, Kokura Steel Works,Kokurakita Ku, Kitakyushu, Fukuoka 8028686, Japan
[2] Sumitomo Met Ind Ltd, Corp Res & Dev Labs, Amagasaki, Hyogo 6600891, Japan
关键词
D O I
10.1179/030192301677876
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
A new drawing die designed to reduce the residual stresses in bar after drawing is presented. The die design consists of two consecutive straight taper portions, and the outlet portion has a very small die angle. The marked beneficial effect of adding the outlet portion was predicted by finite element modelling (FEM), and subsequently verified by measuring the residual stresses in drawn bars. The optimum range of the outlet die angle was determined using FEM. The new design requires a slightly longer die length than the conventional one, but it is short enough to be adopted in current production lines.
引用
收藏
页码:65 / 71
页数:7
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