Which process uses an electron beam to melt powder?

Which process uses an electron beam to melt powder?

• A. Selective Laser Sintering (SLS)
• B. Stereolithography (SLA)
• C. Direct metal laser sintering (DMLS)
• D. Electron Beam Melting (EBM)

Answer: (D)

The energy source and environment define this process: an electron beam melts powder by directing high-energy electrons into the powder bed inside a vacuum chamber. The electrons transfer energy to the metal particles, melting them to fuse each layer as the part is built, and the vacuum is essential to keep the electron path stable and prevent oxidation. This method is Electron Beam Melting, which is distinct from the others that rely on different energy sources. A laser-based process uses a laser to sinter or melt powder in a controlled atmosphere, not electrons. A stereolithography process uses a UV laser to cure liquid resin, not metal powder. The alternative metal process uses a laser to melt metal powder under inert gas rather than an electron beam. So, the defining feature here is the electron beam in a vacuum environment melting the powder, which identifies Electron Beam Melting.

The energy source and environment define this process: an electron beam melts powder by directing high-energy electrons into the powder bed inside a vacuum chamber. The electrons transfer energy to the metal particles, melting them to fuse each layer as the part is built, and the vacuum is essential to keep the electron path stable and prevent oxidation. This method is Electron Beam Melting, which is distinct from the others that rely on different energy sources. A laser-based process uses a laser to sinter or melt powder in a controlled atmosphere, not electrons. A stereolithography process uses a UV laser to cure liquid resin, not metal powder. The alternative metal process uses a laser to melt metal powder under inert gas rather than an electron beam. So, the defining feature here is the electron beam in a vacuum environment melting the powder, which identifies Electron Beam Melting.