The paper presents results of studies on the detachment of conductive coatings from themetal substrate by pulsed electromagnetic field (PEMF). It is known that at the boundary ofa metal substrate and an electrically conductive coating having different electricalconductivities sharp changes of PEMF strength arise. This effect has been used to remove acopper layer from a steel substrate. Experimental studies were carried out in the RigaTechnical University (Latvia), West Saxony University of Applied Science Zwickau,(Germany) and the Samara Aerospace University (Russia). Generators of pulsed currentwith power capacity from 1 to 60 kJ with discharge rates from 10 to 100 kHz were used.Treatment of coatings was performed using both flat and cylindrical inductors. The influenceof a number of factors on the efficiency of the separation of conductive coating (Cu, Al),such as the thickness and material properties of the coating and substrate, the strength ofadhesion of the coating to the substrate, the electrical parameters of the equipment and theinductor system, are shown. Examples demonstrating the main application potential of themethod include: deleting of a thin conductive coating induced on metallic and non-metallicproducts by spraying; separation of layers of metal sheets after their joint rolling orpunching; removal of conductive membranes used in the magnetic pulse compression ofpowders.
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