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Ultrasonic soldering
A method of soldering aluminium with soft solder. aluminium is difficult to solder because, when it is heated, oxides form on its surface and prevent the solder wetting the metal.
The tip of a special soldering iron is vibrated at an ultrasonic frequency as it heats the metal and melts the flux in the solder. This vibration breaks the oxide film away from the surface of the metal, and it floats on top of the flux. The flux covers the hot metal and prevents new oxides forming. Soft solder will stick to aluminium when there are no oxides on it.
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- Part of Speech: noun
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- Blossary:
- Industry/Domain: Aviation
- Category: Aeronautics
- Company: Aviation Supplies & Academics
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