Explosive Sheet Metal Forming

There are various approaches.

Explosive sheet metal forming.

The underwater shock wave travels downstream and then it hits the metal plate to be formed. Explosive forming is a metalworking technique in which an explosive charge is used instead of a punch or press. 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.

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. Primasheet flexible sheet explosive has been developed to meet your breaching and demolition needs. Explosive forming offers unique solutions because explosives can be applied in any shape i e. We manufacture primasheet 1000 a petn based sheet explosive and primasheet 2000 an rdx based sheet explosive.

Although most explosive detonations are destructive the power from an explosive charge can be used to manufacture parts. Double curved and mass. The sheet metal is secured over the mold by a ring clamp. Typically the mold and work piece are submerged in water.

Detonation of the explosive forces the workpiece to assume the shape of the tool. 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. The die cavity is vacuumed and the assembly is placed in water.

Explosives can deliver a huge amount of power. In general a metal sheet is placed on a die. 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. This process can deliver a great deal of flexibility in the metal forming process.

An explosive charge is detonated under water pushing the sheet in the die in about 2 milliseconds. The explosive metal forming process this technique uses the energy generated by an explosive detonation to form the metal work piece. An explosive releases its energy instantly so that an extremely high pressure with short duration occurs at the instance of explosion. An explosive forming process commonly used for the production of large parts is called a standoff system.

Explosive forming is an ideal process for producing low volumes of very large metal part with low tooling costs.