Evaluation of molten iron melt state of ductile iron

Influence of spheroidizing inoculation effect, pouring temperature and other factors on the eigenvalues of ductile iron liquid iron cooling curve. The overall shape of the solidification section from the primary crystal graphite precipitation temperature TGL of the cooling curve or the mass eutectic nucleation temperature TEU to the eutectic solidification end temperature TS is used to characterize the melt quality of the ductile iron molten iron. The method realizes the comprehensive evaluation of ductile iron molten iron. When the comprehensive deviation value representing the similarity of the cooling curves converges to 0, the differences between the solidification microstructure and mechanical properties corresponding to the ductile iron molten iron all converge to 0