FEATURES OF DUCTILE CAST IRON MECHANICAL PROPERTIES DISTRIBUTION IN MELTS

Abstract

Data on the distribution of mechanical properties (tensile strength, elongation and impact strength) of nodular graphite cast iron modified in the ladle with the complex modifier ЖКМК-4Р (FeSiMg-Ca-4RE) are given in the article. The Gaussian curves are constructed and the scattering of 40 melts average test results and the mechanical properties distribution of all the tests (120 cast and annealed samples, respectively) are analyzed. Prospective directions of technology improving for increasing of ductile cast iron mechanical properties are indicated.