What is Ultrasonic Welding (USW) |
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What is Ultrasonic Welding
Ultrasonic Welding (USW) is a welding technique that uses ultrasonic vibration of high frequency to weld the two pieces together. It is most commonly used to weld thermoplastic materials and dissimilar materials. Metal with a thin section can also be welded with USW. Working PrincipleA high frequency (20 kHz to 40 kHz) ultrasonic vibration is used to join two plastic pieces together. The high-frequency vibration generates heat energy at the interface of the two pieces and melts the material. The melted material fused with each other to form a strong weld on cooling and solidification. The typical frequency used is 15, 20, 30, 35, or 40 kHz. Main Parts USWThe various main parts or components of ultrasonic welding are ![]() Also Read: Laser Beam Welding – Equipment, Principle, Working with Advantages and Disadvantages What is Underwater Welding and How it works? Resistance Welding – Principle, Working and Application Working Process of Ultrasonic Welding![]() For a Better Understanding Watch the Video Given Below: Ultrasonic Welding ApplicationsIt is mostly used in computer and electrical, aerospace and automotive, medical, and packaging industries. Computer and Electrical Industries: Here it is used to join wired connections and to create connections in small delicate circuits. Aerospace and Automotive IndustryIn automotive industries, it is used to assemble large plastic and electrical components such as door panels, instrument panels, air ducts, lamps, steering wheels, and upholstery and engine components. In aerospace, it is used to join thin sheet gauges and lightweight materials like aluminum. Medical IndustryIt does not introduce any contaminants or degradation into the weld. That’s why it is used in medical industries. Items such as anesthesia filters, arterial filters, blood filters, dialysis tubes, pipettes, blood/gas filters, cardiometry reservoirs, etc. can be made using the ultrasonic welding method. 4. Packaging Industry It is used to package different materials in food industries. It is used for packaging dangerous materials like explosives, fireworks, and chemicals. Advantages It is a fast welding process. It has a Quick drying time i.e. the pieces do not remain for a long time in the fixtures to dry It can be easily automated. It produces a clean and precise joint. It exhibits clean weld sites and does not require and touch-up work. It produces a low thermal impact on the materials. Disadvantages It cannot be used to produce large joints (greater than 250 x 300 mm). It requires specially designed joints, so it can make tip contact during the welding process. High tooling cost for the fixtures. The ultrasonic welding process is restricted to the lap joints. Related Posts:![]() ![]() ![]() ![]() ![]() ![]() |
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