Friction Stir Welding (FSW) uses a solid-state process to join two facing surfaces. The softened metal is joined much like clay. Instead of turning the material to a molten state, FSW moves material into a plastic state, which completes the weld process using less heat than other welding methods. This process does not require any consumables since the weld tip does not wear out. It’s more manageable, predictable, and controllable. Friction stir welding performs welds of the highest quality and strength, and can even join dissimilar materials.
Through years of research and practice, the use of FSW has gained popularity and is now being used across multiple industries to create strong, seamless welds on structures—aluminum, for example—which require superior weld strength without a heat treatment.
At JR, FSW created components for an electric car out of aluminum. Since the product has no added weight, the end result is a lighter, more energy-efficient vehicle.