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Vibration and ultrasonic welding

Vibration welding is one of the friction welding processes. A distinction is made between linear and orbital vibration welding. Depending on the process, the parts to be joined oscillate differently. In both processes, the parts to be joined are pressed against one another and rubbed against one another by vibration. These oscillating movements heat the parts to be joined and plasticize them. After a short cooling down, a permanent bond develops. The linear process can be combined with infrared preheating, which means that the rubbing phase is suspended in many cases. Vibration welding enables almost all polymers to be bonded with one another, with very short process times.

  • High strength of the weld seam even with high pressure loads

  • Particularly suitable for media-carrying components

  • Different materials can be joined together

  • Short welding cycles

  • Very well suited for large-area welds

  • High degree of automation / reproducible process

Welding process

Ultrasonic welding belongs to the category of pressure welding processes and can be used both in plastics processing and with metallic materials. The connection is made mechanically by generating an alternating current. Thereby ultrasonic vibrations and heat develop, which are transferred in parallel to the respective workpieces under pressure. Thanks to ultrasonic welding, short process times can be maintained.

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