Directed Energy Deposition (DED)

Where this route may help

• Restoring a worn feature where the parent part remains suitable.
• Adding local geometry before finish machining.
• Comparing repair against a replacement part or redesigned assembly.

What determines suitability

• DED melts feedstock using a concentrated energy source. Laser and wire-arc routes have different equipment, material and access requirements.
• Thermal effects, dilution, distortion, deposition access and machining allowance must be assessed for the actual part.
• A suitable process does not by itself authorise a repair. The design authority and acceptance requirements must be agreed.

What to include in the first brief

• Material grade and available traceability.
• Drawings or scans showing the affected feature, dimensions and access.
• Service history, damage description and required final condition.
• Quantity, schedule and applicable inspection or qualification requirements.

Evidence is part of the route

Agree the parent material condition, deposition procedure and trial needs. Define machining, heat treatment where required, dimensional inspection and relevant material or defect checks before release.