Mobile and stationary hard spot detection for heavy plates

We offer a mobile and stationary inspection system for testing heavy plates for hard spots, i.e. localized superficial hardness increases on the plate surfaces. Based on the combination of eddy current and incremental permeability analysis, the mobile detector allows the detection and characterization of hard spots with diameters above 20 mm and relative hardness increases to the base material of 30 HV10. Data is obtained from the variation in local magnetic hysteresis of the material, which includes both the micromagnetic and microstructural properties of the steel.