Improvement methods of bending accuracy for 6000 series aluminum alloy extruded shapes in press bending

被引：0
|
作者：
Hasegawa, Osamu [1 ]
Nishimura, Hisashi [1 ]
机构：
[1] Tokyo Metropolitan University, 1-1 Minami Ohsawa, Hachioji-shi, Tokyo 192-0397, Japan
来源：
Materials Science Forum | 2000年 / 331卷
关键词：
Bending (forming) - Buckling - Mechanical properties - Metal forming - Plastic deformation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, the results of an experimental study on improvement methods of bending accuracy of 6000 series aluminum alloy hollow square cross-section extruded shapes in press bending are presented. Cross-sectional distortion with buckling is a problem encountered during bending, because it reduces the bending accuracy of products. First, a restraining method of buckling by means of an internal mandrel has been examined. Second, some methods of restraining localized deformation by means of a variable die opening system and counterpressure have been investigated. Experimental results have revealed that the formability of an aluminum alloy cross-sectional shape is improved by restraint buckling and local deformation.
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