In simple terms, electron beam welding (EB Welding) is accomplished by heating a tungsten filament which then releases a stream of electrons through an electromagnetic field, focusing them into a precise beam of energy less than .010" (0.254 mm) in diameter. As the beam penetrates the surface of the work piece, using no filler and with a heat concentration of up to 500 times that of conventional welding methods, electrons transform metal beneath the beam through a molten state to a gas, allowing the beam to travel deeper and deeper. As the beam penetrates the material, the small gas hole produced closes rapidly, and the surrounding molten metal then fuses, causing minimal distortion and heat effect outside the weld zone.

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1. Total energy input is approximately 1/25 of conventional welding energy
2. Low heat input results in minimal distortion
3. Able to hold close tolerances
4. Weld deep penetrations with extremely limited heat-affected zones
5. Repeatability of weld parameters job to job, lot to lot
6. High-strength weld integrity (clean, strong and consistent)
7. No fluxes or shielding gases to affect the properties of the weld
8. Penetration control to within 10% welding in vac. 1x10-TORR, producing contamination-free welds
9. Joins similar and dissimilar metals
10. Cost-effective joining meets difficult design requirements and restraint
11. Little or no cleanup after welding
12. Weld in areas that are not possible to reach with other processes
13. Magnified optical viewing for additional