Determination of Flow Curves on Selected Steel Grades in Their Liquid State/ Wyznaczanie Krzywych Płynięcia Wybranych Gatunków Stali W Stanie Ciekłym

Abstract

Abstract Issues of viscosity and rheological properties of liquid ferrous solutions are important from the perspective of modelling, along with the control of actual production processes related to the manufacturing of metals, including iron and steel. Conducted analysis within subject literature indicates that there are many theoretical considerations concerning the effects of viscosity of liquid metal solutions. The objective of this study was to perform rheological measurements of liquid ferrous solutions, the results of which may be used as the basis for developing viscosity models as a function of chemical composition, temperature, and a selected rheological parameter. The study contains the results of rheological tests of ferrous solutions - six chemical compositions with a carbon content from 0.15 to 0.39% and which were tested with applied shear rates from 40 to 180 s-1. The obtained values of dynamic viscosity coefficient are within the range of 0.002 - 0.018 Pa s.