The uses of ultrasonic welding are very wide, mainly including the following aspects:
Plastic welding: Ultrasonic welding can be used for welding plastic products, especially thermoplastics. The friction heat generated by high-frequency vibration causes the plastic to melt locally, and then the pressure makes it tightly combined to form a strong welded joint. This method is suitable for the connection of various plastic products, such as electronic product housings, automotive parts, etc.
Metal welding: Ultrasonic welding can also be used for welding metal materials, such as terminal welding in data cable manufacturing. The heat and pressure generated by ultrasonic vibration can firmly connect the metal terminal with the wire or flexible circuit board to ensure the stability and reliability of signal and power transmission. In addition, ultrasonic metal welding machines are also widely used in the assembly of electronic components, the production of medical devices and other fields.
Welding of other materials: Ultrasonic welding can also be used for bonding between non-plastic materials, such as welding of metal coatings with ceramics and glass in integrated circuits, and packaging welding of thermocouples and chemically active substances.
The principle of ultrasonic welding is to use the vibration heat generated by high-frequency sound waves on the contact surface of the workpiece to make the material melt and combine quickly locally. The specific process includes the ultrasonic generator converting electrical energy into high-frequency electrical signals, which are converted into mechanical vibrations through the transducer. The vibrations are then transmitted to the contact surface of the workpiece, causing the material to melt locally through frictional heat. Finally, pressure is applied to make the materials tightly bonded, and a strong weld is formed after cooling.
