To enable project success, ORNL is looking to expand upon existing additive manufacturing capabilities through standing-up powder feedstock fabrication capability. The system specifications that are required are listed below. The powder atomizer system will allow for fabrication of metallic refractory powders in a clean vacuum environment through the atomization of metallic rods through the induction melting. The atomizer will also conform to space requirements listed below. Certain non-negotiable features have been identified for the atomizer, along with a stretch goal. Listed below, are the requirements for a machine that is being pursued…

Specifications:

Capable of induction melting refractory alloys such as niobium and molybdenum with a bar stock of 50mm diameter minimum and 1,000 mm in length

Accept metallic rods with diameters up to a maximum of 150mm

Must be able to operate on combination of inert gases including helium, argon, and nitrogen

Must have a safe emergency shutdown procedure in the event of power and water loss

System must be equipped with at least one safety pressure relief valve for the atomization chamber

System must fit within a 35x35’ footprint, and a 35’ height

Supplier must be willing and able to conform or all ORNL safety procedures

Buyoff material to be atomized is buyer supplied C103 rod

System electronics must conform to NFPA 499 where applicable

Atomizer must begin delivery in the Fall of 2025 for January 2026 commissioning.

Stretch Goal:

Modular system that can be upgradeable to allow for conversion in melting capabilities from induction melting or rods to plasma arc melting.

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