DEVICE FOR ELECTROCHEMICAL MARKING OF METAL PART SURFACE COATED WITH DIELECTRIC COATING AND ITS APPLICATION METHOD Russian patent published in 2015 - IPC B23H9/06 B23H7/00 

FIELD: electricity.

SUBSTANCE: invention is intended for specification of information symbols at metal parts coated by elastic dielectric coating. The device comprises an electrolyte injector with metal isolated nozzles, which are connected by individual wires to the commutator switch intended for formation of the contour of the information symbols and connected to a source of unipolar pulse current. In the injector there is a dielectric beam with rods passing through it; to the rods individual leads are connected from the commutator switch and the leads are mounted in covers of valves closing the nozzles inside the injector from unload side. Between the beam and covers there are resilient elements and at cover sections joining the nozzles there are fixed piezoelectric cells connected to the electric circuit. By load tips of the nozzles the injector is installed at the surface of dielectric coating, electrolyte is fed by high-pressure jets through the nozzles of the injector filled with electrolyte when unipolar pulse current is supplied individually from the commutator switch to the nozzles placed at the contour of information symbols until the elastic dielectric coating is penetrated; thereafter current supply is cut off and contour of the information symbols is made by anodes until supply of induction current is stopped.

EFFECT: invention allows application of information symbols on metal surface of the part coated by dielectric coating without discontinuity of the elastic coating upon marking is performed.

3 cl, 6 dwg, 1 ex