Forming Limit Extension of High-Strength Steels in Bending Processes
Forming Limit Extension of High-Strength Steels in Bending Processes
复制标题
高强度钢弯曲成形极限延伸
DOI：
10.4028/www.scientific.net/kem.611-612.1110
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
A. Tekkaya
中科院分区：
文献类型：
--
作者：
Mohamed El Budamusi;A. Weinrich;C. Becker;S. Chatti;A. Tekkaya
弯曲成形是金属成形中常用的成形工艺。高强度钢的回弹和成形极限低是其主要缺点，尤其是在空气弯曲过程中。本文采用传统的空气弯制工艺，在弯曲区施加静水压力。这是使用弹性体工具完成的。这种方法的优点是在扩大成形极限的同时，通过减小回弹来保持空气弯曲的灵活性。此外，通过有限元模拟对不同几何形状的弹性体刀具进行了研究。该研究通过最小化回弹和延长成形极限来减小过程作用力。
Bending is a commonly used forming technology in metal forming. The occurring springback and low forming limits of high-strength steels especially during air bending are the main disadvantages. In this paper, the conventional air bending process is applied with a hydrostatic pressure in the bending zone. This was done using an elastomer tool. The advantage of this method is that the flexibility of air bending is maintained by reducing the springback while the forming limits are extended. Furthermore, different geometries for the elastomer tool were investigated by means of a FEM simulation. The investigation leads to a reduction of the process forces by minimizing the springback and to an extension of the forming limits.