2012-01-19 15:31:27 - A sonotrode for high power ultrasonic applications

Hielscher offers various sonotrode designs for its ultrasonic processors. One of these designs is Hielscher’s so-called Cascatode®. The Cascatode® is developed for industrial processing and can be manufactured for all industrial ultrasonic processors – from UP500hd (0.5kW), UIP1000hd (1kW), UIP1500hd (1.5kW) and UIP2000hd (2kW) up to the world’s most powerful ultrasonic device UP16000 (16kW).
The Cascatrode’s specific and distinguishing feature are the conical, disc-shaped segments (or rings) at the sonotrode’s neck. Each disc is arranged in one of the oszillation maximums of the sonotrode. By these rings, the vibrating surface that couples the ultrasound into the sonicated medium can be significantly enlarged.
An increase of the horizontal surface is important as the horizontal area is essential for the transmission of the longitudinal

waves into the medium with the objective to generate cavitation, while the transmission by the vertical surface area of a sonotrode is negligible. The Cascatode® makes it possible to transmit high power at high amplitudes.
Larger sonotrode surfaces are especially important for processing lager volumes. The Cascatode® can be manufactured in various lengths and with a varying number of rings. They are adaptable with flow cell reactors that allow for the inline processing.
Typical applications of high poer ultrasonic processing are homogenizing, disintegration, emulsifying, dispersing or particle size reduction (milling).