Overview
EN ISO/ASTM 52926-4:2023 - "Additive manufacturing of metals - Qualification principles - Part 4: Qualification of operators for DED-LB" defines the capabilities, responsibilities and assessment criteria for personnel who operate Directed Energy Deposition - Laser Beam (DED‑LB / DED‑LB/M) systems. Published by CEN in alignment with the ISO/ASTM 52926 series, this standard focuses on both theoretical and practical qualification of AM operators producing metallic parts, and provides an outline suitable for general industrial applications.
Key topics and requirements
- Scope and intent: Qualification of AM machine operators working specifically with DED‑LB/M technologies to ensure consistent, reproducible process and product quality.
- Training baseline: Candidates should receive theoretical and practical training (example given: 24 hours) or have equivalent experience before assessment.
- Assessment structure:
- Theoretical test: minimum 20 questions, four choices per question, with a 60% pass mark.
- Practical test: demonstration of hands‑on skills to perform process steps in accordance with a documented manufacturing plan.
- Technical topics covered (selection drawn from the standard):
- Recognition of different metal additive processes and the advantages and limitations of DED‑LB/M
- DED‑LB/M system components and their functions
- Feedstock types and feedstock handling activities
- Interaction of the process heat source (laser) with feedstock, including influence on build outcomes and deformation
- System set‑up and build preparation (platform installation, handling, storage)
- Manufacturing/build procedures, post‑processing, and quality‑related activities
- Assessment procedures: Follow general principles in ISO/ASTM 52926‑1 and apply DED‑LB/M specific topics (sections 4.2.2–4.2.7).
Practical applications
- Developing or aligning operator training programs for DED‑LB systems.
- Recruiting and certifying skilled AM operators for metal 3D printing facilities.
- Establishing competency evidence for regulated industries (aerospace, automotive, medical, railway, process plants).
- Supporting internal quality assurance, production planning and audits to improve reproducibility and reduce process risk.
- Informing third‑party certification and compliance schemes that require operator qualification records.
Who should use this standard
- Manufacturing managers and HR teams responsible for AM workforce competency
- Training providers and vocational schools delivering DED‑LB operator courses
- Quality, compliance and production engineers in metal additive manufacturing
- Certification bodies and auditors assessing operator qualifications
Related standards
- ISO/ASTM 52900 - Additive manufacturing: fundamentals and vocabulary
- ISO/ASTM 52926‑1 - General qualification of operators (assessment principles)
- Other parts of the ISO/ASTM 52926 series addressing AM operator qualification
Keywords: EN ISO/ASTM 52926-4:2023, DED-LB, additive manufacturing, metal 3D printing, operator qualification, DED-LB/M, AM operators, directed energy deposition.