Explosive Sheet Metal Forming

Explosive forming or herf high energy rate forming can be utilised to form a wide variety of metals from aluminium to high strength alloys.

Explosive sheet metal forming.

The explosive metal forming process this technique uses the energy generated by an explosive detonation to form the metal work piece. Although most explosive detonations are destructive the power from an explosive charge can be used to manufacture parts. Sometimes called explosive hydroforming a workpiece and explosive is placed in a tank of water. 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.

Detonation of the explosive forces the workpiece to assume the shape of the tool. In general a metal sheet is placed on a die. Explosive forming is a metalworking technique in which an explosive charge is used instead of a punch or press. 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. Explosives can deliver a huge amount of power. 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. Explosive forming offers unique solutions because explosives can be applied in any shape i e.

There are various approaches. On the other hand it is unavoidably an individual job production process producing one product at a time and with a long setup time. The die cavity is vacuumed and the assembly is placed in water. The underwater shock wave travels downstream and then it hits the metal plate to be formed.

Explosives are also used to compact or consolidate metal powders into near net shapes. An explosive forming is one of the techniques to form a metal plate using high shock pressure from the explosion. Typically the mold and work piece are submerged in water. Double curved and mass.

The sheet metal is secured over the mold by a ring clamp. An explosive charge is detonated under water pushing the sheet in the die in about 2 milliseconds. Explosive forming is an ideal process for producing low volumes of very large metal part with low tooling costs. An explosive forming process commonly used for the production of large parts is called a standoff system.

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.