Work Item
ASTM WK72938

New Guide for Additive manufacturing -- Design -- Part 3: Electron-based powder bed fusion of metals

1. Scope

The promotion of knowledge, stimulation of research and implementation of technology through the development of standards for additive manufacturing technologies. The work of this Committee will be coordinated with other ASTM technical committees and other national and international organizations having mutual or related interests.

Keywords

AM; design; additive; PBF

Rationale

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 (LB-PBF-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. Complementary Standards Efforts: As mentioned, the new work item is based on the design guides for laser powder bed fusion, metals and polymers, but is focused on a different process. The proposed work item is intended to be one of the next process-specific design guide developed under the F42.04 design committee. The general design guide, ISO/ASTM 52910, provides the overall framework for the powder bed fusion, material extrusion, and DED design guides. This document will carry the designation ISO/ASTM 52911-3 once approved.

The title and scope are in draft form and are under development within this ASTM Committee.

Details

Developed by Subcommittee: F42.04

Committee: F42

Staff Manager: Pat Picariello

Work Item Status

Date Initiated: 05-08-2020

Technical Contact: Nikolas Hrabe

Item: 001

Ballot: F42.04 (20-01)

Status: Will Reballot Item

Item: 002

Ballot: F42 (22-02)

Status: Negative Votes Need Resolution