The Development of Automated Systems for Noncontact Control of Diameter of Calibrated Nonmagnetic Rods

Abstract

Production of billets and long products in the modern steel production facilities requires continuous monitoring of the organization of quality products. The main controllable parameters in this case are the geometrical dimensions of products. Important requirement for such control are non-contact measurement, their automation, the ability of measurements of parameters of moving products on a given number of sections along its length in real time. Accordingly, the essential requirements for sensors and control devices are presented, such as high sensitivity to the measured parameter, specified the level of measurement accuracy, high reliability, protection from the effects of external factors on the measurement results, the presence of alarm devices for defective products. Eddy current transformer converters for quality control of long products meet the above requirements. The actual problem of monitoring the quality of calibrated non-magnetic stainless steel rods in terms of production is the development of automatic devices for contactless measurement of their diameter. As a result of the research the algorithm of work and functional circuit of automated devices, which are designed for contactless electromagnetic control of diameter of standard nonmagnetic rods and sorting developed. The methodology for calculating the expected signal converter with controlled rods predetermined diameter range offered.

Keywords

• eddy current transformer converter, extremum of conversion function, a non-magnetic calibrated rod, automated device for contactless control