3D Printing Metal: Transforming Manufacturing with Precision and Speed
3D printing metal, formally known as metal additive manufacturing (AM), is a transformative manufacturing technology that builds solid, complex metal parts layer-by-layer from digital models, using metal powder or wire as the raw material. Unlike traditional subtractive methods like machining, which remove material from a solid block, AM adds material only where needed, drastically reducing waste and enabling the production of geometries that are impossible to cast or machine, such as internal cooling channels, lightweight lattice structures, and highly complex organic shapes. The dominant commercial technologies are Powder Bed Fusion (including Selective Laser Melting - SLM and Electron Beam Melting - EBM), where a high-energy source selectively melts thin layers of powder in a bed, and Directed Energy Deposition (DED), which feeds powder or wire into a melt pool created by a laser or electron beam, often used for large-scale parts or repairs.
The applications of metal 3D printing are…
