What is direct energy deposition 3D printing?

Directed-energy deposition (DED) refers to a category of additive manufacturing or 3D printing techniques that involves a coaxial feed of powder or wire to an energetic source (usually a laser) to form a melted or sintered layer on a substrate.

What is direct energy deposition process?

Direct Energy Deposition – Step by Step – Material is deposited from the nozzle onto existing surfaces of the object. Material is either provided in wire or powder form. Material is melted using a laser, electron beam or plasma arc upon deposition.

What is ded used for?

DED is an AM process in which focused thermal energy is used to fuse materials by melting as they are being deposited. It is used for repair, rapid prototyping, and low volume part fabrication.

Why are direct energy deposition processes particularly suitable for repair?

The key benefits of DED over other techniques are that it 1) creates a stronger bond and 2) inputs less heat to the part being repaired. The benefits of the stronger bond are obvious. The lower heat input means less distortion of the part during the repair process. These two benefits make the DED process unique.

When was direct energy deposition invented?

Directed energy deposition was developed by Sandia National Laboratories in 1995 under the name of LENS (Laser Engineering Net Shape) and then was commercialized by Optomec Design Company.

What is sheet lamination 3D printing?

Sheet lamination is an additive manufacturing (AM) methodology where thin sheets of material (usually supplied via a system of feed rollers) are bonded together layer-by-layer to form a single piece that is cut into a 3D object.

What is material extrusion 3D printing?

Material Extrusion 3D Printing (also known as Fused Filament Fabrication or Fused Deposition Modeling) is a 3D printing technology which is used to process thermoplastic materials in filament form to create three dimensional objects.

What is wire arc additive manufacturing?

Wire Arc Additive Manufacturing (WAAM) is a production process used to 3D print or repair metal parts. It belongs to the Direct Energy Deposition (DED) family of Additive Manufacturing processes. WAAM is executed by depositing layers of metal on top of each other, until a desired 3d shape is created.

What is ultrasonic additive manufacturing process?

Ultrasonic additive manufacturing (UAM), a process developed by Fabrisonic, builds metal workpieces by fusing and stacking metal strips. The work is done on a hybrid machine tool able to CNC mill the workpiece as the additive build proceeds.

What is laser metal deposition?

Laser metal deposition is an additive manufacturing process where a laser beam is used to form a melt pool on the surface of a metal object. Metal powder is then injected using a gas stream. A thin layer of the base material is melted by the laser heat source in a controlled way.

What is binder jetting in additive manufacturing?

Binder jetting is an additive manufacturing process in which an industrial printhead selectively deposits a liquid binding agent onto a thin layer of powder particles — foundry sand, ceramics, metal or composites — to build high-value and one-of-a-kind parts and tooling.

Where is direct energy deposition used?

Direct energy deposition is used in various industries, including aerospace, marine, oil and gas, defense, and architecture. Aerospace manufacturers use DED to produce structural parts for satellites and military aircraft.

What is direct laser deposition?

The process of direct laser deposition or laser cladding allows, through the fusion of a filler material, usually in the form of metal powder, on the surface of a material and, by the action of a laser beam, the generation of a coating with similar or improved properties than those of the base substrate.

Is a laser assisted direct metal manufacturing process?

The mechanical properties of metallic parts prepared by laser-processed 3D printing technology, which commonly uses high-energy laser sources to heat and melt raw metal materials (powder, wire) and layer stack, can reach that of metal parts produced by the traditional manufacturing process.

What is direct metal deposition?

Direct metal deposition (DMD) is a powder jet additive-manufacturing (AM) technique that can be used for low-cost build, repair, hardfacing and reconfiguration of forging dies. The technique has also been used to add features such as flanges and bosses to forged parts to improve their functionality.


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