Eddy current testing technology

Eddy current testing places the coil with alternating current on the steel plate to be tested or the inner wall of the steel pipe. At this time, an alternating magnetic field will be generated in and around the coil, which will cause eddy induced alternating current in the steel pipe, which is called eddy current. In addition to the shape and size of the coil, the size and frequency of the alternating current, the distribution and size of the eddy current also depend on the conductivity, magnetic permeability, shape and size of the material, the distance from the coil and whether there are cracks on the surface.The inspection and testing equipment can meet the requirements of API 5CT/5L, ASTM, DIN, GB and other standards for sample processing and inspection of hot-rolled seamless steel pipes. Sample processing and inspection requirements.