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It's "ultrasonic weld," rather than "sound weld." Sounds more "engineering-ish," anyway.

This is done by clamping two objects together - usually plastic ones, but thin metal can also be ultrasonically welded - and directing a high-power beam of ultrasonic energy at the mating point. The beam causes heat, which makes the two materials in the joint melt. When they cool down, they're fused together.

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Harry Rogahn

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2y ago
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Wiki User

15y ago

Welded is the joining of two pieces of metal where the parent metal is heated to it's melting point. Filler metal, if any, is the same composition as the pieces to be joined. This is in contrast to brazing or soldering, where the pieces to be joined do not reach the melting point, and the filler metal is of different composition, with a lower melting point.

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Q: What does welded mean?
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