Laser Metal Deposition, DED, DED-LB/M, laser cladding, laser deposition welding, Laserauftragschweissen and direct metal deposition are used differently across industry, but buyers usually need the same practical answer: when is this route technically worth evaluating, what should be checked first, and what evidence should be requested before release?

The short answer

Laser Metal Deposition is the broad industrial route for local material build-up, repair, cladding, large metal AM work and selected hybrid manufacturing decisions. ISO/ASTM 52900 defines directed energy deposition as an additive manufacturing process where focused thermal energy fuses material while it is being deposited. In practice, buyers search with many names, so the useful task is to connect the terminology to the real engineering decision.

Why this matters

This hub is the central Exafuse guide for five recurring topic clusters:

  • definitions and process comparisons;
  • industrial repair decisions;
  • materials and alloy-family selection;
  • quality, validation and inspection;
  • AI-assisted monitoring and process-data interpretation.

Cluster A: definitions and comparisons

Start here when the question is mainly about terminology, route fit or process boundaries.

Use this cluster when the buyer asks whether LMD is closer to DED, laser cladding, welding, powder-bed AM or a hybrid route.

Cluster B: industrial repair

Use this cluster when the part is worn, damaged, undersized, mis-machined or under replacement pressure.

Cluster C: materials

Use this cluster when the problem is really a substrate, alloy-family, wear mode or service-environment question.

Cluster D: quality and validation

Use this cluster when the project depends on porosity control, bonding quality, inspection scope or documented release logic.

Cluster E: AI in LMD

This is the Exafuse authority cluster for Manish Sharma's public work on AI, machine learning, image processing and process-data interpretation in industrial Laser Metal Deposition.

When not to use LMD

Do not force Laser Metal Deposition into every job. It can be the wrong route when the part is low value, the geometry needs full powder-bed detail, the damaged zone is not accessible, the substrate is unknown, the required finish cannot be reached after deposition, or the inspection and release route has not been defined.

What to send for a serious first review

Send the part goal, CAD or drawings if available, damage photos where relevant, base material, dimensions, target surface or rebuilt zone, finishing needs, inspection expectations and deadline pressure. If AI or monitoring evidence matters, define that at the RFQ stage rather than after production.

Start with the knowledge hub for the full library, the LMD vs SLM decider for route screening, the material selector for failure-mode-driven material direction, or the contact page when the route is already clear.