ABSTRACT
Online material properties measurement has itself been established as an important tool for optimizing the product quality of rolled at steel products. Increasing demand from the automotive industry for more reliable product quality has led to a search for measuring instruments that overcome the drawbacks of standard mechanical properties testing methods. In order to optimize the product quality and to achieve narrow production tolerances, a continuous monitoring of the mechanical properties during production is mandatory. Only online measurements of these properties provide fast and immediate feedback and enable the producer to react during the processing of the steel. This chapter describes the industrial operation and economic bene ts of an Impulse Magnetic Process Online Controller (IMPOC © ). This online material properties measurement system allows automatic nondestructive testing of ferromagnetic steel strips. The system periodically magnetizes the steel strip and measures the residual magnetic eld. Based on mathematical models, the mechanical properties’ tensile strength and yield strength are calculated online along the length of the coil. The system was developed by the Institute of Applied Physics, Minsk [1-3], has been further optimized for industrial applications in close cooperation with ThyssenKrupp Steel [4], and is now in use at several steel-producing plants worldwide.
