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弯曲挤压型材成型的进展与趋势

Advances and Trends in Forming Curved Extrusion Profiles.

作者信息

Zhou Wenbin, Shao Zhutao, Yu Junquan, Lin Jianguo

机构信息

Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, UK.

出版信息

Materials (Basel). 2021 Mar 25;14(7):1603. doi: 10.3390/ma14071603.

DOI:10.3390/ma14071603
PMID:33806064
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8037283/
Abstract

Curved profiles/sections have been widely used for manufacturing lightweight structures with high stiffness and strength due to aerodynamics, structural properties, and design reasons. Structural components fabricated using curved aluminum profiles satisfy the increasing demands for products used in many high-technology industries such as aerospace, shipbuilding, high-speed rail train, and automobile, which possess the characteristics of lightweight, high strength/stiffness relative to weight, superior aerodynamics performance, and aesthetics. In this paper, the advances and trends in forming techniques of curved extrusion profiles of metal alloys have been reviewed. The curved profile forming techniques are classified into three major categories: conventional cold bending technique, stress/moment superposed cold bending technique, and extrusion-bending integrated forming technique. Processes for innovative development in the field of forming curved profiles are identified; the extrusion-bending integrated technique which can directly form the billets into curved profiles by one single extrusion operation possesses the full potential for further innovation. Due to the nature of the research to date, much of the work referred to relates to hollow circular and rectangular tube cross-sections.

摘要

由于空气动力学、结构特性和设计原因，弯曲型材/截面已被广泛用于制造具有高刚度和强度的轻质结构。使用弯曲铝型材制造的结构部件满足了许多高科技行业（如航空航天、造船、高铁列车和汽车）对产品日益增长的需求，这些产品具有重量轻、相对于重量而言强度/刚度高、空气动力学性能优越以及美观等特点。本文综述了金属合金弯曲挤压型材成形技术的进展和趋势。弯曲型材成形技术主要分为三大类：传统冷弯技术、应力/弯矩叠加冷弯技术和挤压-弯曲一体化成形技术。确定了弯曲型材成形领域的创新发展工艺；挤压-弯曲一体化技术可通过一次挤压操作直接将坯料加工成弯曲型材，具有进一步创新的巨大潜力。由于迄今为止的研究性质，所提及的许多工作都涉及空心圆形和矩形管截面。

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