Bonding EBM-built blocks of 316L steel, using hot isostatic pressing
Paper in proceedings, 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.

Author

P. Mellin

Swerea KIMAB

Hans Magnusson

Swerea KIMAB

P. Harlin

Sandvik

Stefan Wikman

Fusion for Energy

Jon Olsén

Stockholm University

Zhijian James Shen

Stockholm University

Lars-Erik Rännar

Mid Sweden University

Joakim Ålgårdh

Swerea KIMAB

Lars Nyborg

Chalmers, Materials and Manufacturing Technology

Proceedings Euro PM 2017: International Powder Metallurgy Congress and Exhibition

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

Subject Categories

Wood Science

Paper, Pulp and Fiber Technology

Manufacturing, Surface and Joining Technology

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Latest update

3/11/2019