The coining force influence on springback in TRIP800 steel V and L-bending processes

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• 作者：Paulo Victor Prestes Marcondes…
• 关键词：Springback ; V ; bending ; TRIP steel
• 刊名：Journal of the Brazilian Society of Mechanical Sciences and Engineering
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：38
• 期：2
• 页码：455-463
• 全文大小：1,629 KB
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• 作者单位：Paulo Victor Prestes Marcondes (1)
  Ricardo Adriano dos Santos (1)
  Siedro Augusto Haus (1)
  
  1. UFPR, Curitiba, Paraná, Brazil
  
• 刊物主题：Mechanical Engineering;
• 出版者：Springer Berlin Heidelberg
• ISSN：1806-3691

文摘

The metal sheet forming process is widely used in manufacturing, especially in the production of parts by bending. In recent decades, the increasing competition and growing demand for lightweight, high performance and crash worthiness structures in automotive vehicle forced steel industry, automakers and the scientific community to start focusing on more efficient production. As a result, a significant increase in the application of new materials such as Advanced High Strength Steel and Transformation Induced Plasticity (TRIP) steels has been observed in automobiles over the last decade. Thus, a better understanding of the formability of these materials is necessary to reduce costs and to optimize processes. Among the forming parameters, the springback—dimensional and geometric accuracy—has a considerable influence. In this work were formed strips of TRIP800 steels by V-bending processes to achieve a predetermined geometry with low springback. Among the forming parameters studied, the force applied to the sheet during the bending showed significant influence in springback. Therefore, different coining forces were applied on the radius region in V-bending. It was observed a reduction, elimination and even an advance in the springback for V-bending when higher forces—beyond the necessary—were applied in the process.