METHOD OF DETERMINING DEFORMATION BY THICKNESS OF STEEL ROLLS BY QUANTITATIVE METALLOGRAPHY Russian patent published in 2024 - IPC G01B11/16 G01N33/20 

FIELD: measurement; metallurgy.

SUBSTANCE: invention relates to methods for measuring deformation of rolled steel, based on methods of quantitative metallography, and can be used to determine and evaluate local deformations by thickness of hot-deformed steel rolls in metallurgical industry. Summary: metallographic thin sections are prepared from full section of initial steel continuously cast billet and deformed roll. Dendritic structure is revealed on thin sections by chemical etching. Distances between axes of first-order dendrites are measured. Thickness of the billet before and after deformation is reduced to unity for calculation of local deformation in the same sections in thickness. For each investigated section of thickness, average values of distances between dendritic axes of the first order before deformation and after deformation are calculated. Calculating the relative change in the distances between the dendritic axes of the first order, which is the value of local deformation in each investigated section along the thickness.

EFFECT: higher accuracy and reliability of determining local deformations along the section of steel rolls and finished rolled products from continuously cast billets with a highly dispersed microstructure.

1 cl, 2 dwg