Ultrasonic Cutting, Riveting and Stamping

Areas of Application:

Ultrasonic cutting: food industry

Ultrasonic riveting: the areas of application of this technology are mainly found in the automotive industry

Ultrasonic stamping: this technology is used for textiles and metallic films and offers the advantage of a non-fraying stamped edge.

Principal Function of Ultrasonic Cutting, Riveting
and Stamping Technology:
In principle, the same components are needed for ultrasonic cutting as for ultrasonic welding. These components include an ultrasonic generator, a transformer (booster), and a special sonotrode (cutting tool).

When ultrasound is used, the quality of the cut, the cutting capacity, and the tool life of the cutting tools are considerably better or higher than in the case of conventional cutters and blades. In many cases, the fabric can be sealed while it is being cut, which prevents fraying. Ultrasonic cutting is used in the textile industry, film and tarpaulin manufacturing, airbag manufacturing, the food industry, and many other areas.

Ultrasonic riveting connections are the type of connections that cannot be detached again. Here, one differentiates between hollow rivets and solid rivets. Ultrasonic riveting enables an interlocking connection between thermoplastics and other materials such as thermosetting plastics or metals. In the case of this method, the sonotrode is used for pressurized cooling during the holding time, and a reinforced, rattle-free connection is made. The areas of application of this technology are mainly in the automotive industry.

Ultrasonic stamping offers the advantage of a non-fraying stamped edge. At the same time, the stamped edge is sealed. In turn, the stamping tool consists of a sonotrode that has been especially manufactured for this application.

Frequencies
Typical frequencies used in these ultrasonic applications are 20 kHz, 35 kHz, and 40 kHz. More seldom, a frequency of 15 kHz and systems with a frequency of 70 kHz are also used.