Metal additive manufacturing — across directed energy deposition (DED), selective laser melting (SLM), electron beam melting (EBM), and wire arc additive manufacturing (WAAM) — has moved from prototyping to production. Aerospace, medical implant, defence, and energy sector applications now demand parts that meet the mechanical property standards of wrought or forged equivalents. For reactive metals including titanium, tantalum, niobium, and high-entropy alloys, achieving those standards is impossible without a consistently maintained inert processing atmosphere.

LABPRO designs and manufactures large-volume inert atmosphere systems specifically for metal additive manufacturing environments. Our gas purification systems maintain oxygen and moisture below 1 ppm continuously — across volumes from 1,000 litres for laboratory DED systems up to 100,000 litres for industrial WAAM cells — ensuring that the metallurgical quality of printed parts meets the standards that end-use applications demand.

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Why Reactive Metal AM Requires Inert Atmosphere

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Titanium and its alloys — Ti-6Al-4V most prominently — are the most widely printed reactive metals. At the temperatures involved in laser and electron beam processing, titanium reacts almost instantaneously with oxygen to form titanium dioxide, and with nitrogen to form titanium nitride. Both reactions embrittle the deposited material, reducing ductility, fatigue resistance, and fracture toughness. Oxygen pickup as low as 0.05 wt% can shift Ti-6Al-4V from ductile to brittle fracture behaviour.

The ASTM F3001 specification for AM titanium limits total oxygen in the feedstock and environment combined to below 1,300 ppm — a standard achievable only with a well-maintained inert atmosphere enclosure operating below 5 ppm atmospheric oxygen throughout the build cycle.

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Additive Manufacturing Processes Served by LABPRO Systems

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• Directed Energy Deposition (DED): laser metal deposition (LMD), laser cladding, and electron beam additive manufacturing (EBAM) for multi-axis near-net-shape fabrication.

• Wire Arc Additive Manufacturing (WAAM): plasma transferred arc (PTA), MIG-based, and TIG-based WAAM for large titanium, aluminium, and steel structures.

• Powder Bed Fusion (PBF): SLM and DMLS enclosures for laboratory-scale machines requiring augmented atmosphere control beyond the machine's built-in inert gas system.

• Electron Beam Melting (EBM): secondary containment and atmosphere management for EBM systems processing titanium, cobalt-chrome, and nickel superalloys.

• Binder jetting of reactive metals: sintering preparation and handling of green parts from reactive metal powders.

• Reactive metal powder handling: storage, sieving, blending, sampling, and morphology analysis in inert atmosphere.​

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LABPRO System Specifications for Additive Manufacturing

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Every LABPRO AM system is engineered around your specific machine

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LABPRO does not offer standard boxes for additive manufacturing. Every system is designed around the customer's machine: DED head clearance, WAAM torch travel envelope, electrical and data feedthroughs, vision system windows, and powder recovery access points are all specified in consultation with the customer's process engineering team. Purification systems are sized to the chamber volume and purge-rate requirements of the specific build cycle.

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Reactive Metal Powder Storage and Handling Under Inert Atmosphere

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Beyond the build chamber, reactive metal powders require inert atmosphere storage and handling to maintain their properties across build and recycle cycles. LABPRO designs integrated powder handling systems — gloveboxes with built-in sieving, blending, and transfer stations — that allow the full powder management workflow without atmospheric exposure. This is particularly important for high-value powders such as tantalum, niobium, and titanium-aluminium intermetallics, where oxidation of recycled powder represents a significant material cost and quality risk.

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