Ultrasonic welding makes it possible to assemble metal components, particularly copper, aluminium and other non-ferrous metals (nickel, brass, etc.) that are difficult to weld using traditional methods.
It ensures a true connection and mechanical strength combined with excellent electrical and thermal conductivity.
Ultrasonic metal welding is a cold welding process, with very little heat generated outside the joint. This process is also non-destructive and non-invasive as it requires no filler materials or soldering flux.
The parts are welded between the Sonotrode and the anvil. Both of these components are ridged. The anvil holds one workpiece while the Sonotrode sets the other workpiece in motion in order to create friction allowing assembly. (see diagram)
This process, using friction, is also called molecular seizure.
Drawing on our expertise and mastery of ultrasound developed over more than 30 years, SONIMAT has evolved solutions integrating this ultrasonic metal parts welding process.
APPLICATIONS: The ultrasonic welding process is used in the assembly of electric batteries, electronic equipment, automotive components, etc.
Ultrasonic mechanical vibrations have a frequency above the hearing range of the human ear (greater than 16 kHz). This is used in many applications, particularly in industry for cutting and welding processes of various materials (composite, textile, food, metal, plastic). Ultrasound, for cutting or welding a part, works with using an acoustic assembly.
An ultrasonic acoustic assembly is a unit that uses high frequency sound waves. The operation of this acoustic assembly depends on several main components:
🤔 In summary: The sound waves emitted by the generator are transmitted to the converter which transforms them into mechanical vibrations. These vibrations are then amplified by the booster and transmitted to the parts to be welded via the Sonotrode. The vibrations generated create heat by friction and melting of the surfaces to be welded.
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