Tools for the ultrasonic welding usually are nominated as horns a.k.a. "sonotrodes". These welding tools can be made of different materials. Ordinarily we use Titanium, Aluminium or steel.
For the quality of a horn the following are crucial: the frequency, the equal diversification of the amplitude and - above all – the optimal oscillation.
The frequency a horn has to swing in depends on the frequency of the appropriated generator. Frequencies from 15 up to 40 kHz are common. We design and build horn in all frequencies.
The mechanical deflection a horn swings at, between the contact area and the welding part is named "amplitude". Normally it lies in between 10 to 40µm (1µm = 1/1000 mm). The amplitude should be allocated as equal as possible to get best welding results.
However, also the form of swinging of a horn is deciding for the quality of the welding process. The importance of the form of swinging is unfortunately often underestimated. This can ultimately lead to bad welding results and to an abridged lifetime.
As a principal we validate every horn individually – even replicas already build by competitors – when building first time.
We check and optimize your applications…
For additional informations look at our PDF - prospect.
An overview about our horn-build-aktivities you may find as an power-point-presentation here.
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