FIELD: electricity.
SUBSTANCE: invention relates to a constant cathode used as an electrode at electrolytic production of metals. A cathode includes a plate that is at least partially made from steel, with that, dimensions of grain boundaries on the plate surface of the constant cathode are set based on provision of a possibility of deposited metal adhesion to the surface and removal of metal from the surface on at least some part of the surface that is in contact with an electrolyte; with that, the plate has an area of the surface with strong properties of adhesion to the deposited metal and an area of the surface with weak properties of adhesion to the deposited metal, which is located at the beginning point of separation of the deposited metal, with that, the above properties of adhesion of the plate surface are related to dimensions of grain boundaries in the above area of the surface. The treatment method of constant cathode surface is described.
EFFECT: easier separation of deposited metal from cathode plate surface.
11 cl, 7 dwg, 2 ex, 4 tbl
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