Method for after-treatment of highly stressed region of chassis assembly of motor vehicle, involves implementing plastic deformation by applying mechanical energy on edge portion of welded seam and/or on notch portion of welded joint

摘要

The method involves welding metal parts (2, 3) with a dynamically loaded metal component (1) using a welded joint (4). Plastic deformation is implemented by applying mechanical energy on an edge portion (5) of a welded seam (6) and/or on a notch portion (7) of the welded joint to introduce residual compressive stress. The notch portion is formed in concave shape using the mechanical energy, which is produced using high-frequency hammering process. The compressive stress is introduced on a portion of an undercut of the welded joint.