casting

casting

Main performance

Ductile iron castings have been used in almost all major industrial sectors, which require high strength, plasticity, toughness, wear resistance, resistance to severe thermal and mechanical shock, resistance to high or low temperatures, corrosion resistance and dimensional stability. In order to meet these changes in the conditions of use, ductile iron is available in many grades, providing a wide range of mechanical and physical properties.

Most nodular cast iron castings, as specified by the International Organization for Standardization ISO1083, are mainly produced in a non-alloying state. Obviously, this range includes high strength grades with tensile strength greater than 800 Newtons/mm2 and elongation of 2%. At the other extreme are high plastic grades with elongation greater than 17% and correspondingly low strength (as low as 370 Newton/mm2). Strength and elongation are not the basis for designers to choose materials, and other decisive and important properties include yield strength, modulus of elasticity, wear resistance and fatigue strength, hardness and impact properties. In addition, corrosion resistance and oxidation resistance as well as electromagnetic properties may be critical for designers. In order to meet these special uses, a group of austenitic ductile iron has been developed, usually called Ni Resis ductile iron. These austenitic nodules are mainly alloyed with nickel, chromium and manganese and are included in international standards.

It is pearlescent ductile iron, with medium and high strength, medium toughness and plasticity, high comprehensive performance, good wear resistance and vibration absorption, and good casting process performance. Its properties can be changed by various heat treatments. Mainly used in various power machinery crankshaft, camshaft, connecting shaft, connecting rod, gear, clutch plate, hydraulic cylinder and other parts.