The results of analysis of the relationship of structure and mechanical properties of ductile cast ironpots with globular graphite form, experience and perspectives of their industrial application. It is shown thatthe growth in the production of castings of ductile iron is caused exclusively by a favorable combination ofphysical, mechanical, operational and technological properties of this material, as well as economicconsiderations.The main factors regulating the cast structure and level of physical, mechanical and operationalcharacteristics of ductile iron are: the quality of the initial melt modification modes (including composition,quantity, method and sequence of input and additives), chemical composition and rate of solidification of themetal.Heat treatment of ductile iron is more effective than iron with lamellar graphite , since graphitespherical than weakens the metal substrate than the plate . Castings from nodular iron are exposed tovarious types of heat treatment. The purpose of heat treatment - structurally free cementite decomposition inrelatively thin sections of the casting ( graphitizing joke ) or hardening of pearlite matrix ( normalization).Can be used combined heat treatment, the purpose of pursuing the expansion of structurally free cementitewith subsequent normalization.
Investigation of Dendrite Coarsening in Complex Shaped Lamellar Graphite Iron Castings