Plasma Arc Melting System

Plasma Arc Melting System

Oak Ridge National Laboratory (ORNL) is requesting proposals for a pilot-scale plasma arc melting system to support research on refractory metal alloys. The system must be adaptable for various feedstock types and melting conditions, with precise control over heat input, melt rate, and gas environment. Key specifications include:

Melter Characteristics:

Plasma Torch System: Programmable motion control with multiple plasma torches and controlled gas delivery.

Cooling System: Closed-loop water cooling for heat-sensitive components, with integrated manifold and valves.

Material Feeding: Capability to handle compacted powder, turnings, and scrap, with optional bar feeders.

Ingot Forming: Vertical ingot formation in induction-heated molds, producing solid ingots (max: 100 mm x 100 mm x 1000 mm; min: 50 mm diameter x 1000 mm).

Melting Rate: Minimum of 1000 cc/hour for refractory metals.

Operational Safety & Integration:

Must include necessary framing, enclosures, and controls for safe lab operation, complying with safety codes.

Proposals should cover installation, commissioning, training, and a list of recommended spare parts and consumables.

Utility Requirements:

Power: 480 V, 3-phase, 60 Hz, ≤1200 KVA total demand.

Gases: Helium and argon at 120 psi.

Cooling Water: 350 gallons per minute from a tower loop and 80 gallons for emergency use.

Facility Constraints:

Max footprint: 35 ft (L) x 28 ft (W) x 25 ft (H), supported by an 11-inch thick concrete slab, with no below-grade installation required.