Principles of Ultrasonic Metal Welding

The principle of ultrasonic metal welding is to use the mechanical vibration energy of ultrasonic frequency (over 16KHz) to connect the same metal or dissimilar metal in a special method.

When metal is ultrasonically welded, it neither delivers current to the workpiece nor applies a high-temperature heat source to the workpiece, but under static pressure, the vibration energy of the frame is converted into friction work, deformation energy and limited temperature rise between the workpieces.

The metallurgical bonding between the joints is a solid state welding that is achieved without the base material being melted, so it effectively overcomes the spatter and oxidation caused by resistance welding.

Ultrasonic metal welding machine can perform single-point welding, multi-point welding and short strip welding on thin wire or sheet materials of non-ferrous metals such as copper, silver, aluminum, and nickel. It can be widely used in the welding of SCR leads, fuse pieces, electrical leads, lithium battery pole pieces, and tabs.