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The chemical composition of ductile iron castings
2014-12-20 16:14      Come from:Botou city in Europe Keyue Machinery Co., Ltd.

The chemical composition of ductile iron castings.

The chemical composition of ductile iron castings: mostnodular cast iron such as the international organization for Standardization in 1501083 by the provisions of thecasting, mainly in the production of non alloy state.Obviously, this range includes a tensile strength greater than 800 n / mm, the elongation is high strength grade 2%.The other extreme is high plastic brand, its elongation is larger than 17%, while the corresponding lower strength (a minimum of 370 Newton / mm spoon. Strength and elongation and root not only designers to select thematerials, and other crucial important performance also includes the yield strength, modulus of elasticity, wear resistance and fatigue strength, hardness and impact properties. In addition, the corrosion resistance andantioxidation and electromagnetic properties may be crucialfor the designers. In order to meet these special use,developed a set of Austenitic Ductile Iron, usually called aproud Ni Resis died of ductile iron. These Austenitic Ductile Iron, zinc, manganese and chromium mainly by alloying,and included in the international standard.

Nodular casting components of pig iron is iron carbon alloys containing more than 2% C, pig iron carbon content is generally 2.5%--4%, and with C, SI, Mn, S, P and other elements, is the use of iron ores of blast furnace smeltingproducts. According to the pig iron carbon forms are different, but also for the steel-making pig iron, cast ironand ductile iron casting and so on several. The precipitation of spherical graphite cast iron. Cutting actionon the metal substrate than spheroidal graphite flake graphite cast iron to make small, the strength of matrix structure intensity of 70 ~ 90%, the tensile strength can reach 120kgf/mm2, and has a good toughness ductile ironchemical composition of iron removal and abroad usually: containing 3.6 ~ 3.8%, the silicon content of 2 ~ 3%,manganese, phosphorus and no more than 1.5% of the total sulfur and a small amount of rare earth magnesiumnodulizing agent, etc..