24 Apr,2025
Electron Beam Welding
Electron beam welding refers to the use of accelerated and focused electron beams to bombard the welding surface placed in a vacuum or non-vacuum, so that the workpieces are melted to achieve welding. Vacuum electron beam welding is the most widely used electron beam welding.
Electron beam welding is widely used in many industries such as aerospace, atomic energy, national defense and military industry, automobiles, and electrical and electronic instruments because of its advantages of not requiring welding rods, not being easily oxidized, having good process repeatability, and small thermal deformation.The basic principle of electron beam welding is that the cathode in the electron gun emits electrons due to direct or indirect heating. The electrons are accelerated by the high-voltage electrostatic field and then focused by the electromagnetic field to form an electron beam with extremely high energy density. This electron beam is used to bombard the workpiece, and the huge kinetic energy is converted into heat energy, which melts the workpiece at the welding point and forms a molten pool, thereby realizing the welding of the workpiece.
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