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Electron beam welding is a method that is used in various industries such as high-density welding of automotive parts, thin plate welding for secondary battery, welding of MLCC and resistance manufacturing process, semiconductor chip welding of PCB board. The application process is expanding on the back of industrial innovation and its history is reaching about 100 years.
Electron beam welding is a technique that accelerates electrons generated by heating the filament of the cathode to a bias potential difference between the cathode and the anode in a vacuum (1x 10-2)environment that induces electron release, and the magnetic coil controls the amount of current to melt and bond using the thermal energy generated by colliding the collected electron against the target. The mass of electrons is very small compared to the mass of air, so it is necessary to create a vacuum environment of 6.7pa or less to prevent scattering of beams.
A vacuum environment of 6.7pa or less is required, and the weld quality is excellent because there is no oxidation.
High energy absorption rate
The electron beam has a very high energy absorption rate of 80 to 90% for the metal, enables to the welding of high-reflective material of copper or aluminum or between different materials.
High energy density
The electron beam has a high energy density of more than 5000 times that of the ARC weld, enable to narrow, deep key-hole welding.
Beam deflection function.
The electronic beam can be freely positioned according to the control of the deflection coil and can be multi-focus welded at the same time.
High energy density
The electron beam can be welded with a narrow and deep shape with a high energy density of more than 1000 kw/㎠, which is 5000 times higher than the ARC welding.
Minimize weld thermal deformation
Welding heat distortion can be minimized by very low heat input.
Welding between different materials.
High reflective material or high melting point material(Ti,W)has few energy reflections, enabling cross-welding. -High reflective materials (AL, Cu, SUS etc) -High melting point material(Ti, W, etc)