FSW has inherent advantages in the lightweighting of rail transit vehicles, particularly in vehicle structures such as body panels, roofs, and floors. It reduces the use of rivets, lowers weight, and enhances structural strength and fatigue performance, meeting the stringent weight and strength requirements of rail transit. It is also used to manufacture vehicle connectors, joints, interior panels, and brackets, where welding aluminum alloys results in minimal deformation and good sealing, improving the strength and durability of connectors and the precision and aesthetics of interior components.
