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Tensile test and impact test of nodular cast iron

The tensile test shall be carried out in accordance with gb/t 228-2002 tensile test method for metallic materials at room temperature, and the sample shall be a standard short cylindrical sample; The impact test shall be conducted according to GB 229-2007 metallic materials Charpy pendulum impact test method, and...

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Test of nodular cast iron

As cast crankshaft castings with nodular cast iron trademark of QT800-2 are selected as the samples. After testing, the nodularity grade is grade 2, the graphite size is grade 5~6, and the chemical composition is shown in Table. Element C Si Mn P S Content 3.78-3.99 1.83-2.26 0.46-0.50 0.05-0.06...

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Influence on properties of nodular cast iron

On the premise of good spheroidization of graphite, the mechanical properties of nodular cast iron can be adjusted in a large range by means of heat treatment. After isothermal quenching, nodular cast iron can obtain high strength, high toughness, high hardness and high bending fatigue strength at the same...

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