Metal Fabricator's Handbook Free Download 2021

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Metal Fabricator's Handbook Free Download

A newly updated and fully revised edition of the Steel Bridge Design Handbook (formerly the Highway Structures Design Handbook) is now available as a free download from the National Steel Bridge Alliance (NSBA), a division of the American Institute of Steel Construction.

The metal fused filament fabrication (MF3) has been investigated as an extension of the MIM process for free-form fabrication for a variety of metals [10,11,12,13,14]. During shaping, a green body is produced consisting of IN 718 powder particles and an organic binder. The green body is then subjected to different processes to remove the binder system and increase the inter-particle strength inside the remaining powder compact. The binder removal process is not 100% efficient in removing the organic components, and since there might be oxygen in the debinding atmosphere, carbon and oxygen residues are left in the debound and pre-sintered specimen. For successful MF3 processing of nickel-base superalloys, controlling the furnace atmosphere is key to reduce impurity uptake. Additionally, special focus is required on finding an appropriate temperature profile for thermal debinding and sintering. Heat treatment after sintering is applied for adjusting the resulting microstructure and enhancing mechanical properties. Knowledge acquired from investigations on MIM IN 718 [5,6,7,8,9,10,11,12, 15,16,17] can be applied for optimization of sintering parameters for MF3 processing.