Eddy Current Inspection is inconvenient to be used in complex-shaped components
711 Keywords：Automotive parts, bars and wires
Eddy current flaw detection is a defect of alternating current electromagnetic coil in metal plane layer, which is not convenient to use in complex shape components. In thermal power plants, it is mainly used to detect condenser tubes, turbine blades, turbine rotor central holes and welds. Principle When AC is fed into the coil, if the voltage and frequency used remain unchanged, the current through the coil will also remain unchanged. If a metal tube is placed in the coil, the circumferential current, or eddy current, is induced on the surface of the tube.