Non-Vacuum Electron Beam Welding
Electron beam welding in air is a special variant of electron beam welding where the beam is led through vacuum stages into the atmosphere. This allows flexible processing of large components and reduces non-productive times.
Physical-Chemical Mechanism of Action
The electron beam welding process uses high-energy electron beams that strike the workpiece surface and release thermal energy there. This heats the material and melts the metals. The vacuum stages ensure the beam can operate in air without being deflected or absorbed.
Metallurgical Relevance & Risks in Welding
Electron beam welding in air offers high precision and can be applied to complex geometries. It avoids the use of fluids, which reduces the risk of corrosion. However, the process is expensive and requires specialized equipment. Incorrect settings can lead to incomplete melting or excessive hot cracking.
Workshop Practice & Action Instructions
Use electron beam welding in air for large components and complex tasks. Make sure the vacuum stages are correctly set and the beam targets the workpiece directly. The temperature should be continuously monitored to ensure uniform melting. Use the recommended energy setting (typically 10-20 kJ/cm²) and aim for a speed of 5-10 mm/s.