Ultrasonic Welding Force. That mechanical motion along with applied force creates frictional heat at the plastic. There are a number of parameters that must be selected correctly in order to achieve good ultrasonic welds.
An ultrasonic welding machine consists of the following components. Used weld strength of crystalline materi-als approaches 95 of parent material strength as opposed to 40-70 when energy director is used. Vibration amplitude frequency During the ultrasonic welding process mechanical vibrations with defined amplitude force and duration are applied to the materials to be welded.
The technique ultrasonic welding used high-frequency sound waves and pressure to bond metals together and required less energy than conventional welding.
Weld force during the ultrasonic welding of thermoplastic components. The process is accomplished by converting high-frequency electrical energy into high mechanical motion. The resulting internal stresses cause elastoplastic deformation at the interface. In addition since most welding systems are pneumatically driven the weld force is relatively constant or increases during the cycle.