Electron beam melting machine

混合添加剂制造教席于2018年3月1日在鲁尔大学博鸿成立。其中一个研究热点是基于粉末床熔融的添加剂制造技术。由于目前金属材料的可获得性有限，以及这些制造工艺的发展相对较早，面向生产的定制材料设计(材料设计)和工艺稳定性一方面处于研究的前景，另一方面，电子束熔炼系统作为一种主要的研究工具被应用，它能够将金属粉末材料熔化和固结成致密的部件。这一系统最初将处理总共四个项目。由于平行提交的关于激光熔化系统的提案，这些项目分为电子束专题和相关专题。鉴定新材料的方法涉及例如，通过电子束熔化过程加工难熔金属。这些材料的特点是耐热性、耐腐蚀性以及高强度和高硬度。这些材料的常规加工很难实现。然而，电子束熔炼在加工难熔金属方面具有很高的潜力。基于传感器的现场工艺优化方法有助于更好地理解建造过程中的物理现象和温度梯度。采用真空高温工艺管理的方法，研究了不同温度、不同能源对电子束和激光束熔化过程的影响。由于温度水平和真空环境的可比性，这两种主要的研究装置都允许比较材料的性能。根据部件内温度分布的函数分析各自的微观结构代表了该项目的目标。混合部件的制造方法结合了两种相关的制造技术。在电子束熔化的基座上生产激光熔化的部分(反之亦然)导致了关于混合工件生成的知识的显著增长。因此，有必要对这两个截面进行组织分析，并对节点进行分析。该项目的实施需要对电子束枪的性能、工艺控制和构造室的性能以及硬件和软件的兼容性提出具体的技术要求。拟议的电子束熔化系统在概念上非常适合于这项研究，并作为唯一的工厂实现了预期的标准。

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.