Ultrasonic Metal Welding (Ultrasonic Metal Welding) is a technology that utilizes high-frequency ultrasonic waves generated by mechanical vibration to achieve the welding of metal materials. It is widely used in automotive, electronics, medical equipment and other industries, especially for thin-walled and fine metal components welding is more suitable.
The working principle of ultrasonic metal welding is: the two metal parts to be welded are placed between the welding head, and a certain pressure is applied. An ultrasonic generator then converts the electrical energy into mechanical vibrations, usually at frequencies between 20 kHz and 70 kHz, which are transmitted to the welding head. The vibrations in the welding head repeatedly compress the two welded parts downwards and quickly return to their original position. This movement creates tiny friction and shear forces on the metal surfaces, which results in a high-temperature, high-pressure weld zone between the contacting surfaces. This effect also satisfies conditions similar to those of thermoplastic welding, so that metal parts can be welded together.
Compared to traditional metal welding methods, ultrasonic metal welding has the following advantages:
Welding is fast, usually taking only a few seconds to complete.
No welding material is required, reducing costs and process requirements.
Can weld a wide range of metal materials, including different types and thicknesses.
Compared with other metal welding methods, ultrasonic metal welding has a minimal impact on the weld area, produces low distortion, and requires very little heating.
As a result, ultrasonic metal welding has been widely used in automotive, electronics, and medical device applications, and offers advantages in terms of efficiency, environmental friendliness, and sustainability.