Explosive Sheet Metal Forming

An explosive forming is one of the techniques to form a metal plate using high shock pressure from the explosion.

Explosive sheet metal forming. Explosives can deliver a huge amount of power. Explosives are also used to compact or consolidate metal powders into near net shapes. The sheet metal is secured over the mold by a ring clamp. Explosive forming is a metalworking technique in which an explosive charge is used instead of a punch or press.

An explosive charge is detonated under water pushing the sheet in the die in about 2 milliseconds. Primasheet flexible sheet explosive has been developed to meet your breaching and demolition needs. Detonation of the explosive forces the workpiece to assume the shape of the tool. The die cavity is vacuumed and the assembly is placed in water.

There are various approaches. Typically the mold and work piece are submerged in water. The underwater shock wave travels downstream and then it hits the metal plate to be formed. Although most explosive detonations are destructive the power from an explosive charge can be used to manufacture parts.

Explosive forming a method of forming metals mainly sheet metals in which pressure is created by the force of the blast of a high explosive powder or gaseous mixture through a transmitting medium. In general a metal sheet is placed on a die. Double curved and mass. Explosive forming is an ideal process for producing low volumes of very large metal part with low tooling costs.

Explosive forming offers unique solutions because explosives can be applied in any shape i e. Explosive forming is employed in aerospace and aircraft industries and has been successfully employed in the production of automotive related components. An explosive releases its energy instantly so that an extremely high pressure with short duration occurs at the instance of explosion. The explosive metal forming process this technique uses the energy generated by an explosive detonation to form the metal work piece.

Primasheet 2000 is equally as powerful as a c 4 explosive but because of it s consistent performance and properties blast damage can be minimized by exact cutting of. Explosive forming or herf high energy rate forming can be utilised to form a wide variety of metals from aluminium to high strength alloys. Sometimes called explosive hydroforming a workpiece and explosive is placed in a tank of water. It can be used on materials for which a press setup would be prohibitively large or require an unreasonably high pressure and is generally much cheaper than building a large enough and sufficiently high pressure press.

An explosive forming process commonly used for the production of large parts is called a standoff system.