20Khz Titanium alloy mechanical oscillation ultrasonic vibrations

The ultrasonic vibrations are generated in a generator, which converts the incoming mains voltage into high-frequency energy. This high-frequency electrical energy is converted into mechanical vibration energy of identical frequency with the help of the sound converter.

The entire resonance unit consists of generator, converter, amplitude transformation unit and sonotrode, and it works through resonance. In ultrasonic welding, the heat required to melt the moulds is created by converting ultrasonic vibrations into mechanical vibrations and guided to the work piece to be welded at a certain contact pressure through the sonotrode. The plastic components function here as the energy carriers.

The mechanical vibrations occurring on the work piece are absorbed and reflected away at the boundary. Heat that melts the plastic is generated on account the boundary- and molecular friction. The dense vapour-emitting plastic layer creates a sound blockade, which leads to additional melting of the plastic and hence, to an acceleration of the reaction.

• Ultrasonic welding
• Ultrasonic cutting
• Ultrasonic sieving
• Ultrasonic cleaning
• Ultrasonic soldering
• Ultrasonic atomizing
• Ultrasonic turning

PARAMETER

20Khz transducer Parameter datasheet

Application:

In ultrasonic welding, there are three variables to consider: time, pressure and amplitude. All three need to be taken into consideration to control the process. But before we can delve into these considerations, we need to understand the main components of this type of welding. Ultrasonic welding equipment consists of a machine press, generator, converter or transducer, sonotrode or horn, component support tooling and booster.

ultrasonic-welders

This type of welding is basically electrical energy converted into mechanical motion, resulting in intense vibration, which creates frictional heat. The heat melts the plastic and bonds the plastic parts together. The welding machine’s horn delivers the mechanical motion and applies pressure until the joints solidify.

Ultrasonic welding is a great method for welding plastic parts together. However, the joint design and application of tooling are essential to ultrasonic welding success. Most ultrasonic equipment is available in 20, 30 or 40 kilohertz ratings. These are the rates at which the horn vibrates, creating a high-frequency ultrasonic acoustic vibration. The vibration causes friction, melting the plastic.

Advantage

1. The piezoelectric ceramic chip adopts imported parts, and can give a strong and stable output.
2. High efficiency, high mechanical quality factor, obtaining high electric-acoustic conversion efficiency work at the resonance frequency points.
3. Large amplitude: optimization design by computer , vibration speed ratio is high .
4. Large power,Under the action of prestressed screw, the energy of the piezoelectric ceramic to get maximum play;
5. Good heat resistance, small harmonic impedance, low calorific value, using temperature range is wide.