Extrusion bending:method,application and recent development
Extrusion bending:method,application and recent development
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发表时间：
2008
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通讯作者：
Zhong Zhi-hua
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作者：
Zhong Zhi-hua
轻量化建筑有利于缓解日益严重的能源危机。考虑到结构、空气动力学和美观等因素，轻量化设计通常采用曲线型材，而土木工程等大多数情况下采用直型材。型材在弯曲过程中，特别是空心型材，可能会出现截面挠度和回弹等缺陷。本文首先讨论了弯曲缺陷及其预防措施，然后讨论了不同类型的弯曲方法和方法介绍并分析了它们的特点。最后介绍了一些新工艺，这些新工艺中挤压和弯曲是在一个工序中完成的。
Lightweight construction conduces to the relief of the more and more serious energy crisis.Considering the factors of structure,aerodynamics and beautility,curved extrusions are usually used in lightweight design,while straight extrusions are used in the most circumstances like civil engineering.During the bending process of extrusions,especially for hollow extrusions,defects such as cross section deflection and springback may occur.In the present paper,bending defects and their preventive measures were firstly discussed.Then different kinds of bending methods and their characteristics were presented and analyzed.Finally,some new processes were introduced.In these new processes extrusion and bending were conducted in one working procedure.