Reshaping of thin steel parts by cold and warm flattening

IF 2.6 3区材料科学 Q2 ENGINEERING, MANUFACTURING

International Journal of Material Forming Pub Date : 2023-05-26 DOI:10.1007/s12289-023-01759-y

Daniele Farioli, Matteo Fabrizio, Ertuğrul Kaya, Matteo Strano, Valerio Mussi

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引用次数: 0

Abstract

Approximately half of global steel production is dedicated for manufacturing sheets. Due to global warming, geopolitical instabilities and rising raw material costs, recycling sheet metal is increasingly important. Conventional recycling has inefficiencies, therefore improving material efficiency and adopting circular economy strategies is necessary to halve CO₂ emissions by 2050. This paper presents a review of sheet metal reuse techniques and introduces an innovative remanufacturing framework of curved steel sheet, with a special focus on the automotive sector and car-body panels. To support the framework presented, an experimental procedure on small-scale samples was carried out. The material tested was DC 0.4 steel parts (0.8 mm thick) characterized by different curvature radii. The material was reshaped and flattened under different conditions to understand the effect of the process variables onto the final quality of the remanufactured parts. The experiments showed that even parts with small curvatures can be flattened and reshaped with success. Lastly, to support the general remanufacturing framework presented, some flattening simulations of a large car-body are presented, revealing the importance of implementing a dwelling stage in the process and the advantage of performing such process with heated tools.

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用冷热压扁法对薄钢件进行整形

全球大约一半的钢铁生产用于制造薄板。由于全球变暖、地缘政治不稳定和原材料成本上升，回收金属板材变得越来越重要。传统的回收效率低下，因此提高材料效率和采用循环经济战略是到2050年将二氧化碳排放量减少一半的必要条件。本文介绍了金属板材再利用技术的回顾，并介绍了一种创新的曲面钢板再制造框架，特别关注汽车行业和车身面板。为了支持所提出的框架，进行了小规模样品的实验程序。试验材料为DC 0.4钢件(0.8 mm厚)，具有不同的曲率半径。在不同的条件下对材料进行重塑和平整，以了解工艺变量对再制造零件最终质量的影响。实验表明，即使是曲率较小的零件，也可以成功地进行平整和重塑。最后，为了支持所提出的一般再制造框架，对大型车身进行了一些扁平化仿真，揭示了在过程中实现驻留阶段的重要性以及使用加热工具执行该过程的优势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Material Forming ENGINEERING, MANUFACTURING-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.10

自引率

4.20%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal publishes and disseminates original research in the field of material forming. The research should constitute major achievements in the understanding, modeling or simulation of material forming processes. In this respect ‘forming’ implies a deliberate deformation of material. The journal establishes a platform of communication between engineers and scientists, covering all forming processes, including sheet forming, bulk forming, powder forming, forming in near-melt conditions (injection moulding, thixoforming, film blowing etc.), micro-forming, hydro-forming, thermo-forming, incremental forming etc. Other manufacturing technologies like machining and cutting can be included if the focus of the work is on plastic deformations. All materials (metals, ceramics, polymers, composites, glass, wood, fibre reinforced materials, materials in food processing, biomaterials, nano-materials, shape memory alloys etc.) and approaches (micro-macro modelling, thermo-mechanical modelling, numerical simulation including new and advanced numerical strategies, experimental analysis, inverse analysis, model identification, optimization, design and control of forming tools and machines, wear and friction, mechanical behavior and formability of materials etc.) are concerned.