High energy conversion
According to DIN 8584 ("tensile pressure forming"), high-energy forming is a forming process in which a workpiece is subjected to an impulse due to the energy that is suddenly released and thus undergoes plastic deformation. The generation of the impulse can take place in different ways, which give the different processes their names. A distinction is made between:
- Pressure wave during the detonation of explosives ( explosion forming , see also explosive cladding , explosive welding )
- Pressure wave caused by an electrical discharge in water or oil, which serves both to generate pressure waves and as an active medium: electrohydraulic conversion (EHF), also known as hydroelectric conversion
- Pressure surge or wave over an active medium in hydro-impulse forming (HID), in which a projectile or a falling weight is used
- Pressure pulse directly in the conductive workpiece through a magnetic field ( magnetic deformation ).
The advantages of these processes are the fast forming speed ( high-speed forming ) and the need for a one-sided form in contrast to casting , deep drawing , drop forging or stamping .
See also
literature
- Hubert Graefen (Ed.): Lexicon of materials technology. VDI-Verlag, Düsseldorf 1993, ISBN 3-18-401328-6 , pp. 427-429.