... , forming, riveting, spot welding, cutting, sewing. Under Ordinary Circumstances, its ultrasonic frequency mainly is 15KHZ, 20KHZ, 28KHZ, 35KHZ, 40KHZ, the higher the ... power of the frequency is, and the application range is relative smaller. Ultrasonic Supporting device mainly depend on ultrasonic generator, ultrasonic transducer, ultrasonic mould those ...