A relatively new alternative technology for joining multi material structures i e.
Spot friction welding for sheet aluminum joining.
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.
Korzeniowski journal archives of civil and mechanical engineering year 2010 volume 10 pages.
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.
Called friction bit joining was used to spot weld aluminium alloy 7075 t6 to.
Several joining methods have been successfully adapted to join aluminium sheet metal parts including resistance spot welding rsw 12 13 self piercing riveting spr 14 15 friction stir.
This paper studies a hybrid friction stir resistance spot welding process for joining aluminum alloy 6061 t6 to trip 780 steel.