Method for rapidly determining iron liquid component window for producing high-quality ductile iron casting

The invention provides a method for rapidly determining an iron liquid component window for producing a high-quality ductile iron casting. According to the method, the adding equivalents of a nucleating agent and a spheroidizing agent are considered. Through thermodynamic calculation of a high-flux component material, on the basis of the obtained solidification characteristics and in combination with actual pouring cooling conditions of production, proper components of the molten iron are screened out according to the constructed solidification characteristic discrimination criterion of the high-quality ductile iron casting, so that a molten iron component window is formed. The ductile iron casting formed through the method has the advantages of being high in graphite spheroidization rate and sphericity degree and excellent in cast iron material mechanical property. 本发明提供了一种用于生产优质球铁件的铁液成分窗口快速确定方法，该方法考虑孕育剂与球化剂的添加当量，通过高通量成分材料热力学计算，基于所获凝固特性并结合生产实际的浇注冷却条件，经由所构建的优质球铁件的凝固特性判别准则筛选出铁液的适宜成分，从而形成铁液成分窗口。通过本方法成型的球铁件具有石墨球