Explosive Forming

In the explosive forming (Figure 21.10), shock wave is generated in a fluid medium by detonating an explosive charge. The entire wavefront is utilized in a confined space. But, for large object the wavefront may be used for unconfined space and it is less effective than confined space. The typical explosives include TNT and dynamite for higher energy, and gun powder for lower energy. With high explosives placed directly over the workpiece, pressure up to 35 kN/mm² can be generated. With low explosives, the pressure is limited to 350 N/mm².

Figure 21.10 Explosive Forming