FSW (Friction Stir Welding)

The A-train's strong and attractive-looking body is the result of the use of revolutionary technology called FSW.
FSW is a welding method that makes use of the plastic flow of metal. In this method, the FSW tool is inserted between the welding line of the aluminum double skin, and the tool is rotated as it moves along the welding line. The faces are welded due the plastic flow of metal generated because of friction between the tool and the parent metal. Since FSW is a welding method through mechanical friction heat that does not make use of filler materials, the composition of the weld is almost the same as that of the parent metal, therefore degradation in strength due to thermal effects and heat distortion are extremely small. As a result, high strength and high quality joints can be attained. The joint is clean and safe, with no sparks or gas generated during the joining process. As the finish of the joint is clean and attractive, the outside finishing of car body can be no paint finishing or painted over with extremely small distortion. The surface finish is smooth and no putty is necessary before painting the surface.

• Learn More : History and Principles of FSW
• Learn More : The Advantages of FSW