We developed the technology and the equipment enabling to provide high level of undesirable covering and residue removal from products (98% of initial volume), loosening of threaded joints and trims, and also their partial dismantling which essentially reduces labor input required for product dismantling and excludes manual crushing (by a chopper or a chisel) of heavily rusted threaded joints.

The principle is grounded on use of high-voltage discharges in a liquid produced between a working electrode and a treatable object and accompanied by a complex of physical phenomena, the so-called electrohydraulic effect being an electric explosion in a liquid generating powerful shock waves and liquid hydrostreams which provide for crushing and removal of foreign covers by making oscillations both in treatable objects and also in the covers and residues to be removed, evoking crack formation in the later and also their delaminating from the surface of treatable objects. Threaded joints are simultaneously loosened and most of which are thus completely untwisted.

To accomplish this electrohydropulse technology the multipurpose electrohydropulse plants are used intended for core knockout from casts (see the table below).

Multipurpose plant operation is carried out as follows.

The parts to be treated are loaded by workshop load-lifting tools into the container being in a loading position and arranged inside according to the technological maps. The container moves to a plant operating hall on a raising platform and the container with parts sinks in the technological bath filled with water. The working electrode is supplied to the parts and fixed in the set point of treatment, the high-voltage electric equipment switches on, thus starting the treatment.

Processes of electric power accumulation, maintenance of a working interval "electrode-part", slurry origination and slag removal outwards the technological bath are carried out automatically. Upon termination of treatment working electrodes are taken away outwards the bath, the container is hoisted and transported to the unloading position, and on the other side of the plant a new container with untreated parts goes for treatment. The cycle repeats.

The plants operate in manual and semi-automatic modes and they are controlled by a remote control panel.

Our specialists from the Science and Technology Center "VEGA" render their assistance to the Clients in mounting, adjustment and commissioning of EH plants, consult on the issues concerning the technology of electrohydraulic treatment of the parts taking into account their specific features and range, train the service personnel, perform warranty and post-warranty service of the equipment. For specific orders STC "VEGA" at IPPT can develop a special design project of EHP proceeding from the Client’s local conditions (product range, available buildings, etc.).

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