Large-dimension metal parts produced through laser powder bed fusion

João P. M. Pragana, Pedro Pombinha, Valdemar Rebelo Duarte, Tiago A. Rodrigues, João P. Oliveira, Telmo G. Santos, Rosa M. Miranda, Luísa Coutinho, Carlos M. A. Silva

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Laser Powder Bed Fusion (LPBF) is an Additive Manufacturing technology in which a defined metal powder thickness is selectively melted with a laser, according to the geometry of the part being produced. The layer-by-layer approach allows manufacturing functional complex shaped components, with high structural integrity at low cost. This technique has been proven to produce near net-shape parts up to 99 % relative density and has viable economic benefits. However, the typical build envelope for this type of machines is of 300x350x250 mm, thus the manufacturing of large-dimension parts is unachievable. The goal of this project was to develop a customized LPBF machine with a build envelope of 1020 mm x 1020 mm x 520 mm that is able to produce high quality parts. Through fine-tuning of the processing parameters, the machine has produced samples with 316L stainless steel which exhibit relative densities above 99 %. Besides the samples, the machine has also successfully built large-dimension parts. The results obtained are a positive indicator towards the ultimate goal of zero-defect manufacturing.

Original languageEnglish
Title of host publicationMETAL 2019 - 28th International Conference on Metallurgy and Materials, Conference Proceedings
PublisherTANGER Ltd.
Number of pages6
ISBN (Electronic)9788087294925
Publication statusPublished - 2019
Event28th International Conference on Metallurgy and Materials, METAL 2019 - Brno, Czech Republic
Duration: 22 May 201924 May 2019


Conference28th International Conference on Metallurgy and Materials, METAL 2019
Country/TerritoryCzech Republic


  • 316L SS
  • Additive manufacturing
  • Density
  • Large-dimension parts
  • LPBF


Dive into the research topics of 'Large-dimension metal parts produced through laser powder bed fusion'. Together they form a unique fingerprint.

Cite this