Friction pulse bonding (FPB) has been applied mainly to malleable materials such as copper and aluminium. These materials require less force and less deformation to achieve a joint. Harder/stiffer materials are more difficult and cause wear of the rotating, hardened steel wheel used in the process.
Using FPB, the weldability of a range of materials has been investigated. Results are summarised in the table:
|Group 1: materials which are readily welded using FPB||Group 2: materials which are more difficult to weld using FPB|
||aluminium to alumina
|copper track on printed circuit board
|copper wire to copper/polyimide flexible circuit
||high density polypropylene
|PVC insulated copper ribbon cable
FAQ: What is friction pulse bonding?
FAQ: Is friction pulse bonding an industrially mature process?