DMLS (Direct Metal Laser Sintering) technology is a powder bed fusion additive manufacturing technology. It is one of the most advanced and reliable metal additive manufacturing processes in the world.
This state-of-the-art additive manufacturing technology is used to manufacture end-use industrial metal components for a wide range of industries. The main applications are found in areas such as aerospace, automotive, medical, defense, energy and tooling.
With DMLS, metal parts can be produced directly from a CAD model. The main ingredient to create such a part is a metal alloy in powder form. During the process, an ultra-fine layer of metal powder is spread over the build platform. Then, a powerful and precise laser melts the material exactly in the areas defined by the CAD model. Thus, one layer of the part is completed, and a new layer of powder is applied. This process is repeated until the final component is completed, reaching a total density close to 100%. The part is finally separated from the build platform.
These are the main steps that define the DMLS process:
- The metal powder is spread over build platform.
- The laser melts the powder on the selected areas.
- The build platform lowers the thickness of one layer, making room for the next one.
- The powder spreads again, forming a new layer.
- The process is repeated layer by layer until the entire component is completed.
This technology offers a wide range of high-performance technical materials designed and optimized for this process. Depending on the needs and requirements of each application, the parts can be manufactured from aluminum alloys, cobalt-chromium, refractory metals, stainless steels, tool steels, and titanium, as well as precious metals such as gold.