Selective Electron Beam Melting (SEBM) working principle-Metal 3D Printing
March 15, 2025
What is SEBM 3D Printing
Selective Electron Beam Melting (SEBM) is an additive manufacturing technology that uses high-energy electron beams as an energy source to manufacture solid parts by melting metal powder layer by layer in a high vacuum environment. The principle is that the electron beam quickly scans and melts the spherical metal powder pre-laid on the forming base plate according to the planned path. After completing a layer of scanning and melting, the workbench drops to a certain height, and a new layer of powder is laid. The electron beam scans and melts again according to the path, and this process is repeated, layer by layer, to complete the manufacturing of metal parts from two-dimensional to three-dimensional.

Advantages of SEBM
- High energy absorption and conversion efficiency, fast forming speed.
- High electron beam power, capable of forming refractory metals.
- Uses powder raw materials selected by particle size, reducing overall part costs.
- High bed temperature allows forming of brittle and crack-prone materials, with low internal stress, minimal support dependency, and no need for post-heat treatment.
- Forming in a vacuum environment results in purer parts.
- Strong electron beam penetration enables deeper melt pools, resulting in denser formed parts.

Why Choose Greenstone SEBM
- Over 20 years of experience in fundamental research and process development of metal 3D printing.
- First in China to launch commercialized electron beam selective melting (SEBM) 3D printing equipment.
- Leading market share in the electron beam additive manufacturing field in China.
- Provider of a full range of metal 3D printing solutions.
- First clinical application of electron beam-printed titanium implants globally.
- Independent intellectual property rights in additive manufacturing equipment and process technology.
- Single gun maximum power of 6kW, forming size of 400×400×400mm.
Michael Shea
Michael Shea – Overseas Director, Global Business Development Leader & Senior Technical Engineering Expert Michael Shea serves as Greenstone’s Overseas Director and a highly versatile senior technical engineering expert, combining global business leadership with deep multidisciplinary expertise across laser cladding, DED metal additive manufacturing, laser cleaning, laser quenching, industrial equipment modernization, and advanced manufacturing system integration. With extensive experience in both international market development and full-spectrum industrial technology implementation, Michael plays a critical role in driving Greenstone’s global expansion while ensuring technical excellence across diverse customer applications. His unique professional strength lies in seamlessly integrating commercial strategy, engineering expertise, and…
