Glossary
Laser Metal Deposition
Laser Metal Deposition is a metal additive manufacturing route where a focused energy source melts feedstock as it is deposited, often for repair, cladding, local feature addition, and large-part additive manufacturing.
Practical Meaning
LMD is useful when material needs to be added only where it is needed: a worn region, a local crack repair after material removal, a functional surface, or a feature on a larger component.
Technical Context
The process depends on heat input, feedstock, shielding, overlap, stand-off distance, path planning, base-material compatibility, and thermal history. These details affect dilution, bonding, geometry, residual stress, and inspection needs.
When It Is Used
LMD is often considered for industrial repair, laser cladding, hybrid manufacturing, feature addition, large-part builds, and cases where replacement lead time or part value makes local deposition attractive.
When It May Not Fit
It may not fit when material is unknown, access is poor, heat distortion risk is unacceptable, tolerance cannot be recovered, inspection is impossible, or the part is better suited to powder-bed design freedom.
AI and Process-Monitoring Relevance
AI can help organize RFQ information, compare process routes, and interpret monitoring signals. It should not turn monitoring data into final quality approval without inspection evidence.
Related Terms
Related terms include Directed Energy Deposition, DED-LB/M, laser cladding, melt-pool monitoring, RFQ intelligence, post-machining, and inspection evidence.
FAQ
Common LMD questions
Is LMD the same as DED?
LMD is commonly treated as a laser-based Directed Energy Deposition route. DED is the broader process family; LMD is one practical laser-based route within that family.
Is LMD the same as laser cladding?
They overlap, but the goal can differ. Laser cladding is often surface or coating focused, while LMD can also include repair, feature addition, and near-net-shape build work.
Is LMD better than SLM?
Not universally. LMD often fits larger parts, repair, cladding, and local material addition. SLM/LPBF often fits compact parts, fine detail, and internal channels.
Does LMD need post-machining?
Often yes. Many LMD repair or build workflows include machining allowance, tolerance recovery, surface finishing, and inspection after deposition.
Can LMD be used for repair?
Yes, repair is one of the common industrial use cases, but feasibility depends on material, damage geometry, access, heat sensitivity, machining allowance, and inspection requirements.
Source notes
Source notes and related pages
Do not quote standard wording from this page. Check the original terminology source when exact definitions matter.