SPECIAL FEATURES OF ELECTROMAGNETIC QUALITY-CONTROL OF HEAT-TREATED PRODUCTS MADE OF THIN CARBON-STEEL SHEET

We investigated the sensitivity of the electromagnetic characteristics to structural changes occurring in carbon steels with medium temperin g temperatures and variation of the carbon content in products with di fferent thickness. We analyzed the possibilities of electromagnetic qu ality control of medium tempering of such products hardened to martens ite. We examined a method enabling the reliability of inspection of th e mechanical properties of ''thin-sheet'' products of carbon steel to be enhanced (with possible fluctuations of the carbon concentration fr om 0.6 to 1.07%) by determining the carbon content in tempered product s and taking it into account in subsequent quality control [1].