Welcome to Ultrasonic Welders. The basic ultrasonic assembly system consists mainly of four major components:
Power Supply: Changes standard electrical power into electrical energy. Most common frequencies used are 15 kHz, 20 kHz, and 40 kHz Converter: The electrical energy created by the power supply to the converter, which changes energy into vertical, low amplitude vibrations
Booster: The vertical vibrations are then sent through the booster which decreases/increases the amplitude, as necessary.
Horn: These electrical vibrations are then transferred to the horn, the tooling that makes contact with the part being welded. A horn of correct size and shape is designed to best deliver the energy to part in fixture
The basic principle of ultrasonic assembly is the conversion of standard 50/60 Hz power to 20 kHz or 40 kHz. The electrical energy travels through a converter, which then expands and contracts at the same frequency converting the electrical energy into high frequency mechanical vibration. This vibration is amplified by a booster and transferred to the the work piece through a shaped tool called a horn. Parts being assembled are clamped together under moderate pressure, at which point ultrasonic vibrations force the parts to collide against each other at a preset frequency creating a molecular bond equal to or above the material strength of the parts.
To learn more about ultrasonic welding:
