Method and apparatus for measuring the thickness of the layer of non-magnetic coatings on ferromagnetic base materials

摘要

A method for non-destructive measurement of the layer thickness of non-magnetic coatings on a ferromagnetic base material, in which at the layer to be measured a permanent magnet is pressed by the action of a peeling force is proportional to the magnet adhering force by the layer is torn off, the thickness of which is detected by measuring technology and to the thickness is evaluated, characterized in that the adhesive force by means of at least one with the permanent magnet (4) are force-lockingly connected together, of the primer - and detachment force is applied to the piezoelectric element (3, 5) is determined, whose by means of adhesive - and peeling force is caused attraction of the electrical signal detected by measuring technology and in the associated layer thicknesses value is converted, which is brought to the display.