The composition of ductile iron

- Mar 15, 2021-

What is the production of ductile iron and the specific steps, let's give you a detailed introduction below.

1. The composition of ductile iron:

  pig iron is an iron-carbon alloy with a carbon content of more than 2%. Industrial pig iron generally contains 2.5%#zsfh#4% carbon, and contains C, SI, Mn, S, P and other elements. Products made from iron ore smelted in a blast furnace. According to the different forms of carbon in pig iron, it can be divided into steel-making pig iron, cast pig iron and ductile iron.

  The precipitated graphite is spherical cast iron. Spherical graphite has a smaller splitting effect on the metal matrix than flake graphite, so that the strength of cast iron can reach 70-90% of the matrix structure strength, the tensile strength can reach 120kgf/mm2, and it has good toughness. The chemical composition of ductile iron except iron is usually 3.6-3.8% carbon content, 2.0-3.0% silicon content, total manganese, phosphorus, and sulfur content not exceeding 1.5%, and appropriate amount of rare earth, magnesium and other nodulizers.