In Germany, the shock wave or electro-hydraulic fragmentation is currently only being used to a limited extent. It should be regarded as a type of pulsed power technology, which represents a largely new technology in Germany. Previous applications at research institutes were limited mostly to the homogeneous fragmentation of old concrete. Commercial applications exist in the form of extracorporeal shock wave therapy ("lithotripsy"), sheet metal forming or sand removal from sand mold parts in the casting industry.
Selective electrohydraulic fragmentation process (EHF) of ImpulsTec
The material-selective electrohydraulic fragmentation process developed by ImpulsTec GmbH uses mechanical shock waves generated within a fluid medium to fragment materials. The shock waves are generated using an electrohydraulic mechanism to ignite a brief, intensive electric arc between two electrodes.