Direct Energy Deposition - Advanced Manufacturing
Directed Energy Deposition (DED) is a metal additive manufacturing process that builds or repairs parts by simultaneously depositing material (powder or wire) and melting it with a focused energy source, such as a laser, electron beam, or electric arc.
Unlike powder-bed technologies, DED deposits material directly onto a substrate or existing part through a moving nozzle, allowing multi-axis deposition. This makes it ideal for large-scale components, high-deposition-rate builds, and in-situ repairs (e.g., turbine blades, aerospace structures, or tooling).
Key advantages include the ability to use multiple materials in a single part, excellent metallurgical bonding, and minimal material waste. Post-processing (machining, heat treatment) is typically required due to the coarser surface finish and lower resolution compared to laser powder bed fusion. Popular variants include LENS, EB-DED, and Wire Arc Additive Manufacturing (WAAM).
