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Ultrasonic welding uses a sonotrode to emit high-frequency ultrasonic oscillations between two welding parts under pressure, causing strong friction on the surface of the welding parts, removing surface oxides, and locally heating them above the recrystallization temperature. A pressure welding method to achieve welding. Suitable for welding thin parts below 3mm.
It is characterized by a solid-state welding method. During ultrasonic welding, the weldment is bonded on the joint surface by consuming part of the high-frequency vibration energy under low static pressure. The base metal does not melt, but only produces a thin plastic deformation layer in the weld area, which is suitable for the same and dissimilar metals.
The application can weld plate, foil, wire or strip-to-plate joints, cross joints or parallel joints between wires, and other forms of assemblies that the anvil can support.
It is now used in the semiconductor, microcircuit and mass customization of precision aluminum alloy parts for electrical appliances contact industries, and the manufacturing of small motor rotors. It has unique advantages for sealing materials.
It can weld aluminum, copper, nickel, gold, silver and other similar and dissimilar metals as well as welding parts with widely different thicknesses. It can also weld plastic, mica and other non-metallic materials.
Link to this article：Ultrasonic welding
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