Electron Beam Welding (EBW)
Electron beam welding uses a high-energy electron beam to melt and refine metals. This allows deeper penetration and more precise welds in a vacuum.
Physicochemical mechanism of action
The electron beam consists of free electrons that strike the workpiece melt pool at high speed. The energy of the electrons is converted into heat and refines the metal. In a vacuum, there are no air molecules to absorb the beam, so energy is transferred effectively.
Metallurgical relevance & risks in welding
Electron beam welding offers high precision and deeper penetration. It is especially suitable for thin materials and complex-shaped parts. However, the process can be expensive and requires special safety measures because the radiation is high-energy.
Workshop practice & action instructions
• Operation in vacuum: The welding process takes place in a hermetically sealed chamber to avoid porosity.
• Energy settings: The voltage and current of the electron beam must be precisely set to achieve the desired melting temperature.
• Safety measures: Use protective clothing and helmet because radiation can be dangerous. Ensure proper operation of the vacuum system.