Production and heat treatment of composite components by temperature-assisted incremental tube forming

为了减少CO2排放和资源，越来越多的制造公司正在遵循轻量化设计的理念。可以采取各种策略，例如使用具有高比强度的组件、负载适应结构或功能集成。这对成形工艺的灵活性提出了特别的挑战，例如，以实现材料的局部变化和对变化的局部材料特性的调整。在此基础上，出现了各种方法来满足对组件的要求。其中包括所谓的剪裁、高强度材料的使用、热辅助工艺和复合材料部件的使用。复合材料部件可以有针对性地组合联合收割机的特定材料特性。该项目的目标是在一个单一的工艺步骤中生产、分级和渐进成型复合管。目的是生产具有抗氧化外管和可硬化内管的复合材料。计划的实施是基于温度辅助的增量管成形和随后的回火，以生产具有可变弯曲半径和横截面以及适应纵向轴线沿着要求的性能的部件。在现有技术和项目特定前期工作的基础上，将研究复合材料生产和成型的同时进行是否会产生协同效应，从而改进和生产更复杂的产品。该方法可用于生产具有适合于机械载荷和/或耐化学性方面的要求的性能的复合部件，这些复合部件或者不可能使用其他已知方法生产，或者只能以相当大的成本生产。所得到的复合材料强度将通过分析或半分析模型来描述。

In an effort to reduce CO2 emissions and resources, more and more manufacturing companies are following the philosophy of lightweight design. Various strategies can be pursued, such as the use of components with high specific strength, load-adapted structures or functional integration. This poses particular challenges for the flexibility of the forming processes, for example to enable a local variation of the material and the adjustment of varying local material properties. Based on this, various methods arise to meet the requirements for components. These include so-called tailoring, the use of high-strength materials, thermally assisted processes and the use of composite components. Composite components make it possible to combine specific material properties in a targeted manner. The aim of this project is the production, grading and incremental forming of composite tubes in a single process step. The aim is to produce composites with oxidation-inhibiting outer tubes and hardenable inner tubes. The planned implementation is based on temperature-assisted incremental tube forming and subsequent tempering, in order to produce components with variable bending radii and cross-sections and properties adapted to requirements along the longitudinal axis. On the basis of the state of the art and the project-specific preliminary work, it will be investigated whether simultaneous composite production and forming generates synergies that lead to improved and more complex products. The process could be used to produce composite components with properties tailored to requirements in terms of mechanical loads and/or chemical resistance, which are either impossible to produce using other known processes or can only be produced at considerably greater expense. The resulting composite strength is to be described by analytical or semi-analytical models.