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Standards Development
This document specifies the features of electron beam powder bed fusion of metals (EB-PBF-M) and provides detailed design recommendations.
Some of the fundamental principles are also applicable to other additive manufacturing (AM) processes, provided that due consideration is given to process-specific features.
This document also provides a state of the art review of design guidelines associated with the use of powder bed fusion (PBF) by bringing together relevant knowledge about this process and by extending the scope of ISO/ASTM 52910.
Electron beam powder bed fusion of metals (EB-PBF-M) is an additive manufacturing (AM) process that offers additional manufacturing options alongside other established AM processes. EB-PBF-M has the potential to reduce manufacturing time and costs, and increase part functionality. Practitioners are aware of the strengths and weaknesses of conventional, long-established manufacturing processes, such as cutting, joining and shaping processes (e.g. by machining, welding or injection moulding), and of giving them appropriate consideration at the design stage and when selecting the manufacturing process. In the case of EB-PBF-M and AM in general, design and manufacturing engineers only have a limited pool of experience. Without the limitations associated with conventional processes, the use of EB-PBF-M offers designers and manufacturers a high degree of freedom and this requires an understanding about the possibilities and limitations of the process.
The ISO 52911 series provides guidance for different powder bed fusion (PBF) technologies. In addition to this document on EB-PBF-M, the series is made up of ISO 52911-1 on laser-based powder bed fusion of metals (LB-PBF-M) and ISO 52911-2 on laser-based powder bed fusion of polymers (LBPBF- P). Each document in the series shares Clauses 1 to 5, where general information including terminology and the PBF process is provided. The subsequent clauses focus on the specific technology.
It provides support to technology users, such as design and production engineers, when designing parts that need to be manufactured by means of EB-PBF-M. It will help practitioners to explore the benefits of EB-PBF-M and to recognize the process-related limitations when designing parts. It also builds on ISO/ASTM 52910 to extend the requirements, guidelines and recommendations for AM design to include the PBF process.
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