公开(公告)号：US20230042159A1

公开(公告)日：2023-02-09

申请号：US17752959

申请日：2022-05-25

申请人： BWXT Nuclear Energy, Inc.

发明人： Andrew Harrison CHERN ,  Travis B. FRITTS ,  Daniel Walter GALICKI ,  Ryan Scott KITCHEN ,  Travis Adam MCFALLS ,  Elizabeth ELLIS

IPC分类号： B23K15/00 ,  B23K15/06 ,  B23K37/00 ,  G21C21/00 ,  B33Y10/00 ,  B33Y40/00 ,  B22F10/28 ,  B22F12/17

摘要： Methodologies and manufacturing processes to manufacture components by electron beam melting additive manufacturing, particularly components of molybdenum or a molybdenum-based alloy and particularly of complex nuclear component geometries. Input parameters are provided for controlling electron beam melting additive manufacturing equipment, such as electron beam melting machines. The input parameters relate to various process steps, including build set-up, initial thermal treatment, initial layering of powder, pre-consolidation thermal treatment, consolidation, post-consolidation thermal treatment, indexing of layers, and post-build thermal treatment. The methodologies and manufacturing processes allow manufacture of components of molybdenum having a purity of ≥99.0% and a density of ≥99.75%. Metallographic cross-sections of the manufactured molybdenum components were porosity-free and crack-free.