Explosive welding is a high-speed collision phenomenon. Usually, explosives act directly on the metal surface of composite plates. In order to avoid leaving scars or tiny cracks on the metal surface, a layer of soft rubber or cardboard is usually placed between the explosive and the metal as a buffer layer (Figures 3a and 3b). The physical process of explosive welding is explained by flat welding. After the explosive is detonated, the cladding plate hits the substrate at a speed of several hundred meters per second, and the pressure of the material near the collision interface increases sharply to about one hundred thousand atmospheres. Some materials will form jets under high pressure. The jet is blown away and the metal is exposed on a clean and active fresh surface. The metallurgical bonding of two metals is formed under high pressure, and the interface is usually corrugated. A large number of experiments show that the jet between two plates is a necessary condition to ensure the success of welding. This requirement must be considered when selecting the parameters such as explosive variety, charge, gap between bottom plate and composite plate, and included angle between initial bottom plate and composite plate. Welded parts with small amplitude and wavy interface often have high welding strength. The mechanism of ripple formation has not yet formed a mature theory, and most people think that the formation of ripple is a manifestation of interface instability. This is due to the discontinuous interface velocity between the composite plate and the matrix. Others saw the vortex street near the bonding surface from Jin Xiangzhong, and thought it was Carmen vortex street after the material bypassed the collision point.