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Bonding EBM-built blocks of 316L steel, using hot isostatic pressing
Swerea KIMAB, Kista.
Swerea KIMAB, Kista.
Sandvik Materials Technology, Sandviken.
F4E, Barcelona, Spain.
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2017 (English)In: Proceedings Euro PM 2017: International Powder Metallurgy Congress and Exhibition, European Powder Metallurgy Association (EPMA) , 2017Conference paper, Published paper (Refereed)
Abstract [en]

To enable production of the First Wall Beam in the ITER fusion reactor; we attempt to join EBM-built blocks of 316L, by Hot Isostatic Pressing (HIP). For highly critical components, EBM-built material is usually HIPed anyway to heal defects such as pores and cracks. Using HIP to simultaneously bond several print-jobs together into a larger component saves time and reduces manufacturing complexity. We found by carrying out this research, that fine surface roughness is an important enabler for a complete bond. The raw printed surfaces that are obtained straight from the Arcam machine (Ra = 19.2 μm) do not enable a good bond. Instead, traditional machining, which in this paper reached Ra = 2.0 μm, enabled a good bond. HIP parameters are also important. The best bond in this study was achieved after increasing holding time from 1 h to 2 h. 

Place, publisher, year, edition, pages
European Powder Metallurgy Association (EPMA) , 2017.
Identifiers
URN: urn:nbn:se:miun:diva-35140Scopus ID: 2-s2.0-85056545055OAI: oai:DiVA.org:miun-35140DiVA, id: diva2:1269395
Conference
International Powder Metallurgy Congress and Exhibition, Euro PM 2017, Milan, Italy, 1 October 2017 through 4 October 2017
Available from: 2018-12-10 Created: 2018-12-10 Last updated: 2018-12-10Bibliographically approved

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Rännar, Lars-Erik

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