Ultrasonic Metal Welding
Ultrasonic metal welding uses high-frequency vibrations to break oxides and generate friction heat that bonds metals. It is especially suited for thin foils or wires.
Physical-Chemical Mechanism of Action
Ultrasonic metal welding uses high-frequency vibrations (normally between 20 kHz and 5 MHz) that break up at the metal surface. These vibrations generate friction heat that joins the metal. Oxides and other contaminants are removed, allowing a clean joint.
Metallurgical Relevance & Welding Risks
This process is especially suited for thin foils or wires since it requires high precision and low heat input. However, too high an ultrasonic level can cause overheating and local destruction of the material structure, leading to cracks or deformation. Insufficient energy supply, on the other hand, can result in poor weld quality and missing joints.
Workshop Practice & Operating Instructions
To successfully perform ultrasonic metal welding, it's important to choose the correct frequency and energy settings. The vibration duration should be set so that it joins the metal effectively without being too high to avoid overheating. For thin materials, careful control of the energy supply is essential.