Mechanisms for controlling springback and strength in heat-assisted sheet forming
Mechanisms for controlling springback and strength in heat-assisted sheet forming
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DOI：
10.1016/j.cirp.2018.04.013
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发表时间：
2018-01-01
影响因子：
4.1
通讯作者：
Tekkaya, A. Erman
中科院分区：
文献类型：
--
作者：
Loebbe, Christian;Tekkaya, A. Erman
最近开发的感应原位加热多步板料成形技术与炉内加热热冲压相比，提高了生产率并降低了成本。本文从闭环控制的角度揭示了弯曲角度和强度等几何和力学性能的柔性设置机制。通过实验、数值和分析研究，对具有代表性的空气弯曲和模具弯曲成形过程中的过弯、回弹和热变形机理进行了分析。介绍了通过晶粒细化、晶粒长大和冷却速度控制碳钢强度的机理。(C) 2018年Elsevier Ltd代表CIRP出版。
The recently developed multi-step sheet forming technology with inductive in-situ heating serves to increase the productivity and to reduce costs compared to hot stamping with furnace heating. The paper reveals the mechanisms for the flexible setting of geometric and mechanical properties such as the bending angle and strength in terms of a closed loop control. The air and die bending as representative forming processes are analyzed with respect to the mechanisms overbending, springback and thermal distortion by experimental, numerical, and analytical investigations. The mechanisms for controlling strength in carbon steels by grain refinement, grain growth and cooling rate are described. (C) 2018 Published by Elsevier Ltd on behalf of CIRP.