Electron beam melting machine

电子束熔炼机

• 批准号: 426714296
• 金额: --
• 依托单位: Ruhr-Universität Bochum
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/426714296?language=en
• 关键词: Electron; beam; melting; machine

The chair of Hybrid Additive Manufacturing was founded at the Ruhr University Bo-chum on March 1, 2018. One research focus is the powder bed fusion based additive manufacturing technology. Due to the currently limited availability of metallic materials and the comparatively early stage of development of these manufacturing processes, the production-oriented design of tailor-made materials (material design) on the one hand and process stability on the other hand are in the foreground of research.An electron beam melting system is applied as a major research instrumentation, which is able to melt and consolidate metallic powder materials to a dense component. In total, four projects will initially be addressed with this system. Due to the parallel-submitted proposal covering a laser beam melting system, the projects are divided into electron beam specific and correlating topics.The methodology for qualifying new materials addresses, for example, the processing of refractory metals by the electron beam melting process. These materials are charac-terized by a high resistance to heat and corrosion as well as high strength and hardness. A conventional processing of these materials is difficult to realize. However, electron beam melting has a high potential for processing refractory metals. The methodology for a sensor-based in-situ process optimization leads to a bet-ter understanding of phys-ical phenomena and temperature gradients during the build process. This is secured by an implementation of process monitoring systems inside of the machine.The method of vacuum high-temperature process management is used to investigate the influence of differing temperature application and energy source on the electron and laser beam melting process. Both major research devices allow a comparison of mate-rial properties due to the comparable temperature level and the vacuum environment. The analysis of the respective microstructure as a function of the temperature distribu-tion in the component represents the aim of the project.The methodology for a hybrid component manufacturing combines both related manu-facturing technologies. The production of a laser beam melted section on an electron beam melted base (and vice versa) leads to a significant gain in knowledge with regard to a hybrid workpiece generation. Thus, the microstructural analysis of both sections and the analysis of the joint is necessary. The implementation of the project requires specific technical requirements for the per-formance of the electron beam gun, process control and building chamber, as well as hardware and software compatibility. The proposed electron beam melting system is conceptually very well suited for the research and fulfills as the only plant the desired criteria.

混合增材制造的主席于2018年3月1日在鲁尔大学Bo-chum成立。其中一个研究热点是基于粉末床熔融的增材制造技术。由于目前金属材料的可用性有限，而且这些制造工艺的开发还处于相对早期的阶段，一方面是材料设计，另一方面是工艺稳定性是研究的前景。电子束熔化系统被用作主要的研究仪器，其能够将金属粉末材料熔化并固结成致密部件。总共有四个项目将首先使用这一系统。由于同时提交的提案涵盖了激光束熔化系统，因此这些项目被分为电子束特定主题和相关主题。例如，通过电子束熔化工艺处理难熔金属，对新材料进行鉴定的方法。这些材料的特点是耐热、耐腐蚀、强度和硬度高。这些材料的常规加工难以实现。然而，电子束熔化具有加工难熔金属的高潜力。基于传感器的原位工艺优化方法可以更好地理解构建过程中的物理现象和温度梯度。这是通过在机器内部实施过程监控系统来保证的。真空高温过程管理的方法用于研究不同的温度应用和能量源对电子和激光束熔化过程的影响。由于温度水平和真空环境相当，这两种主要的研究设备都可以比较材料性能。该项目的目标是分析作为温度分布函数的各个微观结构。混合部件制造方法结合了两种相关的制造技术。在电子束熔化的基底上生产激光束熔化的部分（反之亦然）导致关于混合工件生成的知识的显著增益。因此，对这两个截面的微观组织分析和接头的分析是必要的。该项目的实施对电子束枪的性能、工艺控制和建造室以及硬件和软件兼容性都有具体的技术要求。所提出的电子束熔化系统在概念上非常适合于研究，并作为唯一的工厂满足所需的标准。