METHOD FOR NON-DESTRUCTIVELY EXAMINING AN ANODE OF AN ALUMINIUM ELECTROLYSIS CELL

Proposed is a method for non-destructively examining an anode of an aluminium electrolysis cell which involves the construction of a calculated model (or the use of a set model) with known data about the geometry and specific resistivity of an anode and the geometry and coordinates of internal flaws, wherein a series of periodic calculations is performed, the results of said calculations are displayed in the form of a 3D matrix of the vector amplitudes and directions of calculated electromagnetic field strengths or inductances at sampling points at an outer surface of the anode, at least a pair of electrically conductive contacts is placed on the outer surfaces of the anode under examination, said contacts allowing a set amount of electric current to pass through the anode, at least one sensor is placed at an outer surface of the anode under examination and the amplitude and direction of the electromagnetic field strengths or inductances are measured, the 3D matrices of the calculated and measured electromagnetic field strength or inductance vectors at the same sampling points on the outer surface of the anode are compared, and the size and coordinates of internal flaws are noted on the basis of the results. This provides a more informative determination of the location of flaws, increases the technical capabilities of the method by reducing the instability of the interface resistances of the contact area in the stub holes of an anode, and increases the accuracy and reliability of an examination by measuring magnetic field strength vectors using contactless sensors.