Ultrasonic welding: joining with oscillations

In ultrasonic welding, highly frequent oscillations create a moderate increase of temperature under high contact pressure, through which the pieces are joined together. Due to the low thermal loading, welding stresses are avoided and dissimilar material joints like aluminum with copper can easily be joined.

Joints created with ultrasonic welding have a higher stability and also excellent electric conductivity because oxide layers and impurities on the metal surfaces are destroyed by the oscillations. At the same time, ultrasonic welding is a fast and energy-efficient welding process, especially for thin sheets and workpieces.

Finding optimal process parameters

The quality of ultrasonically welded joints depends on many different factors. The complex interactions of those factors are not completely explored yet for applications that differ from standard procedures.

In the joining laboratory of our research partner ISF we are able to reproduce the welding conditions of our customers and examine the results on modern testing facilities to determine systematically the optimal process parameters for your ultrasonic welding task.

Opening up new application fields for ultrasonic welding

Ultrasonic welding can be used not only for metallic hybrids like aluminum-aluminum, aluminum-copper or aluminum-steel, but also for dissimilar material joints between metals and nonmetals like ceramic-aluminum or CFRP-aluminum.

In this field, we work together with our research partner ISF in the development of new application fields to the point where we can implement them in your production.