Bonding EBM-built blocks of 316L steel, using hot isostatic pressing
Paper i proceeding, 2017

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.

Författare

P. Mellin

Swerea KIMAB

Hans Magnusson

Swerea KIMAB

P. Harlin

Sandvik

Stefan Wikman

Fusion for Energy

Jon Olsén

Stockholms universitet

Zhijian James Shen

Stockholms universitet

Lars-Erik Rännar

Mittuniversitetet

Joakim Ålgårdh

Swerea KIMAB

Lars Nyborg

Chalmers, Material- och tillverkningsteknik

Proceedings Euro PM 2017: International Powder Metallurgy Congress and Exhibition

International Powder Metallurgy Congress and Exhibition, Euro PM 2017
Milan, Italy,

Ämneskategorier

Trävetenskap

Pappers-, massa- och fiberteknik

Bearbetnings-, yt- och fogningsteknik

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Senast uppdaterat

2019-03-11