Ultrasonic welding is a technique used to join materials, typically thermoplastics or metals, by applying high-frequency ultrasonic vibrations to create localized melting at the interface of the parts being joined. This process relies on mechanical vibrations that generate heat through friction, allowing for strong and precise bonding without the need for adhesives or external heat sources. It plays a crucial role in assembling 3D printed parts, particularly when integrating components with different materials or achieving high precision in joints.
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