Control of component properties in rotary swaging process

旋锻过程中部件性能的控制

• 批准号: 374789876
• 负责人: Dr.-Ing. Jérémy Epp
• 金额: --
• 依托单位: Bremer Institut für Strukturmechanik und Produktionsanlagen
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/374789876?language=en
• 关键词: Control; component; properties; rotary; swaging

Rotary swaging is an established incremental cold forming production technique. First attempts to describe the material modifications such as work hardening and residual stress generation as well as the incremental material flow leading to a material flow history are already known. Due to its high variability of the material flow for the same final shape, rotary swaging is a particularly suitable forming process in order to generate residual stresses by process control. The final aim of this project is to describe the interrelation between the material flow, which is controlled by the process control, the resulting material modifications - in particular the residual stress state - and the resulting mechanical properties of the components. As a result, it should be possible to predict the mechanical properties depending on the rotary swaging process parameters or the other way round, to define the required process parameters in order to achieve the desired mechanical properties of the components. This goal is based on the hypothesis that on the one hand, the mechanical properties correlate with the generated material modifications in terms of work hardening and residual stress generation, and on the other hand that these material modifications are resulting from the material flow history of the process. To achieve the overall objective, four sub-objectives are defined for the third funding period: Design and optimization of the rotary swaging process for multi-stage production; component-adapted adjustment of residual stresses; verification and prediction of property improvements under realistic service conditions; design and transferability of the overall method.

旋锻是一种成熟的增量冷成形生产技术。首先尝试描述的材料修改，如加工硬化和残余应力的产生，以及增量材料流导致的材料流的历史是已知的。由于其对于相同的最终形状的材料流动的高度可变性，旋转锻造是特别合适的成形工艺，以便通过工艺控制来产生残余应力。该项目的最终目的是描述材料流之间的相互关系，这是由过程控制控制，由此产生的材料修改-特别是残余应力状态-和由此产生的部件的机械性能。因此，应该可以根据旋转模锻工艺参数或相反方式来预测机械性能，以限定所需的工艺参数，从而实现部件的期望机械性能。这一目标是基于这样的假设，即一方面，机械性能与加工硬化和残余应力产生方面的材料修改相关，另一方面，这些材料修改是由工艺的材料流动历史引起的。为实现总体目标，为第三个资助期确定了四个子目标：多阶段生产的旋锻工艺的设计和优化;残余应力的组件适应性调整;实际使用条件下性能改进的验证和预测;总体方法的设计和可移植性。