Elektronstrålepåkning

Elektronstrålepåkning, often referred to as electron beam welding (EBW) in English, is a fusion welding process that uses a high-speed beam of electrons to join materials. The electrons are generated by an electron gun, accelerated to high velocities, and then focused onto the workpiece. The kinetic energy of the electrons is converted into heat upon impact, causing the material to melt and fuse.

This process typically takes place in a vacuum chamber to prevent the electrons from scattering due to collisions with air molecules. The vacuum also ensures the purity of the weld by preventing contamination from atmospheric gases. Electron beam welding is known for its ability to produce deep, narrow welds with a high depth-to-width ratio, which minimizes distortion and reduces the need for post-weld straightening.

The advantages of electron beam welding include its high welding speed, precise control over the heat input, and the ability to weld a wide range of materials, including reactive metals and dissimilar materials. It is also capable of achieving very clean welds with excellent mechanical properties. However, the requirement for a vacuum environment and the high cost of equipment can be limiting factors. Electron beam welding finds applications in industries such as aerospace, nuclear, automotive, and medical device manufacturing where high-quality, precise welds are critical.