2. Powder bed melting
A layer of powder of controlled thickness (also known as a "powder bed") is deposited on a printing plate. An energy beam melts or locally sinter the powder bed. A new layer of locally melted or sintered powder is then deposited on this powder bed. The operation is repeated until the part is finished (figure 2 ). At the end of printing, the part of interest is surrounded by unbonded powder. The unbonded powder is then removed from the part to perform post-processing operations such as de-powdering, and finishing operations such as tribo-finishing.
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Powder bed melting
Material deposition under concentrated energy
Bibliography
Standards and norms
- Additive manufacturing – Design – Requirements, guidelines and recommendations. - NF EN ISO/ASTM 52910 - Mars 2020
- Additive manufacturing – Safety, health and environment – Requirements for metallic materials. - XP E67-006 - Juillet 2020
Regulations
Council Directive 89/391/EEC of June 12, 1989 on the introduction of measures to encourage improvements in the safety and health of workers at work (OJEC L. 183 of June 29, 1989, CELEX :31989L0391).
Directive 2014/34/EU of the European Parliament and of the Council of February 26, 2014 on the harmonization of the laws of the Member States concerning equipment and protective systems intended for use...
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