Ductile cast iron
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Nodular cast iron is a kind of cast iron material obtained by spheroidization and inoculation treatment of spherical graphite, its mechanical properties are much higher than gray cast iron, and even in some applications can exceed steel. Ductile iron is widely used in the industrial field because of its high strength, medium toughness and plasticity, high comprehensive performance, good wear resistance and vibration damping, and good casting process performance. Specifically, ductile iron parts can be used to manufacture various machine parts, such as crankshafts, connecting rods, gears, camshafts, hydraulic cylinders, cylinders, impellers, brakes, suspension system parts, building structures, etc. In addition, ductile iron castings are also widely used in automobile, railway, ship, aerospace, mining, agriculture and other fields. The surface galvanized layer of ductile iron can improve its anti-corrosion performance, and form an automatic repair protective layer at the damaged area to ensure the integrity of the workpiece. In short, the strength, toughness and ductility of nodular cast iron greatly exceed that of gray cast iron, and it is a cost-effective alternative that can be used in a variety of occasions
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