Fastener manufacturer selected for demanding ultrasonic welding application

German specialist machine maker Schunk Sonosystems has opted to use Bumax DX 129 screws for all of its ultrasonic welding flexure sonotrode products, to improve quality and reliability. The machines are mainly used in the automobile industry.

Schunk Sonosystems develops and builds machines for ultrasonic metal welding. The machines include a sonotrode or welding tip that transfers vibrational energy to the workpiece. Up to two high-strength bolts are required to fix the sonotrode, which is subject to extreme levels of vibration due to the very high frequency used in ultrasonic welding.