DEPENDENCE OF ELECTROMAGNETIC PARAMETERS OF PRODUCTS FROM STEEL 09G2S ON THEIR MECHANICAL PROPERTIES

Abstract

"This work presents a method for a non-destructive method for determining the tensile strength, yield strength and relative elongation of steel products by identifying the relationship between mechanical and electromagnetic properties. Coercive force, maximum magnetic permeability and residual magnetic induction were chosen as electromagnetic properties, as the most structurally sensitive parameters to the composition and heat treatment of products. The difference of the work carried out is the use of several physical characteristics simultaneously as control parameters, since multi-parameter control methods provide higher information content and reliability of assessing the state of materials. The result of the research is a method for determining the relationship between mechanical and electromagnetic parameters. At the same time, the deviation of the values ​​obtained by this method and the actual values ​​during the tensile test does not exceed 5 %. The proposed method for determining the values ​​of mechanical properties can be used for any steel product and its grade, having previously established, for the corresponding composition of the material, the relationship between mechanical and electromagnetic properties. Keywords: coercive force, tensile strength, non-destructive testing, mathematical model, mechanical properties of steel."