What is ultrasonic welding?

Ultrasonic welding is an industrial technique that makes two pieces of plastic or metal smoothly connected through high -frequency acoustic vibrations. One component to be welded is placed on a solid anvil, the other component is located at the top. The extension ("corner") connected to the converter is lowered down to the upper component and a very fast (~ 20,000 kHz) is applied to the small welding zone. The acoustic energy is converted into thermal energy by friction and the parts are welded together in less than a second.

Ultrasonic welding is unique in that no connecting screws, nails, belt materials or adhesives are required to join the two parts. This will very much save production costs and create visually attractive (ie non -shooting) seams in the domains of the product where the appearance is important. Because ultrasonic welding is largely an automated process, all that the technician has to do is pull the lever and Welding is complete. The disadvantage of ultrasonic withCooking is that it only applies to small components - watches, cassettes, plastic products, toys, medical tools and packaging. For example, a car chassis cannot be assembled with ultrasonic welding, because the energy involved in welding larger components would be hostile.

ultrasonic welding technology appeared in the early 90s and has since been a rapid development. As the technology improves, a number of materials that can be connected to this technique are increasing. Initially, only inflexible plastics could be welded, as their material properties allowed the transmission of acoustic energy from part to part. Nowadays, less rigid plastics, such as semi -covering plastics, can be welded, as a large amount of acoustic energy can be used for the welding zone. As technologies ripens and becomes more versatile, it is likely that large classes of historical techniques stopFor joining materials together.