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Metal Stamping - High Energy Rate Forming (HERF)
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High Energy Rate Forming, also known as HERF or explosive forming can be utilised to form a wide variety of metals, from aluminium to high strength alloys. In this process the punch is replaced by an explosive charge. The process derives its name from the fact that the energy liberated due to the detonation of an explosive is used to form the desired configuration. The charge used is very small, but is capable of exerting tremendous forces on the workpiece. In Explosive Forming chemical energy from the explosives is used to generate shock waves through a medium (mostly water), which are directed to deform the workpiece at very high velocities.
As in with the hydroforming metal stamping process, high energy rate forming exerts even force over the entire surface of the metal blank. High energy rate forming can produce components, large in size, with a great deal of detail to very fine tolerances.
High Energy Rate Forming is employed in Aerospace and aircraft industries and has been successfully employed in the production of automotive-related components.
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