A relatively new alternative technology for joining multi material structures i e.
Spot friction welding for sheet aluminum joining.
Aluminum to steel is friction stir spot welding using a conventional 1 piece tool design in this procedure a tool made of refractory alloy such as w 25re or pcbn is rotated and penetrated through the low melting point non ferrous alloy located on the top of the lap weld and the tool pin plunged.
This paper studies a hybrid friction stir resistance spot welding process for joining aluminum alloy 6061 t6 to trip 780 steel.
Korzeniowski journal archives of civil and mechanical engineering year 2010 volume 10 pages.
An effective electrically assisted fssw experimental system has been developed which enables a high density electrical current in the weld zone with the tool passively involved in the circuit.
Called friction bit joining was used to spot weld aluminium alloy 7075 t6 to.
Coldwater has had success in spot welding aluminum 1000 7000 series magnesium non ferrous and dissimilar sheet materials making spotmeld a viable alternative to single point joining processes like resistance spot welding laser welding and riveting especially for the future ev market.