In the wide array of additive manufacturing technologies available today, Binder Jetting stands on its own for the ability to combine the flexibility and part complexity typical of the Additive Manufacturing processes with a productivity rate unmatched by other AM technologies.

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Effect of pre and post heat treatments on microstructure and adhesion of AlTiN films deposited on additive manufactured Ti-6Al-4V alloy.

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In the first part of the article, we discussed how different designs impact the efficiency of vacuum furnaces in respect to their heating energy requirements.
Even though the energy used for heating undoubtedly represents the main energy consumption during vacuum heat treatments, several auxiliary systems can be present on vacuum furnaces (or in the plant housing the furnace); just think of the water-cooling system, the gas quenching system and, clearly, vacuum pumps.
Those auxiliary systems are essential to ensure proper functioning of a vacuum furnace, however, they can generate altogether a significant energy consumption source, especially when continuous operation is required.

Vacuum Pumps

Vacuum pumps are the components that allow a sealed, leak tight furnace to reach the desired vacuum level before starting the heat treatment.

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In the introduction of this article, we’ve already discussed how different powder metallurgy technologies rely on vacuum furnaces for critical steps of their production process, mentioning Metal Injection Molding (MIM), Binder Jetting (BJT), Powder Bed Fusion (PBF) and Direct Energy Deposition (DED) additive manufacturing.

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