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Floating defect of graphite in ductile iron casting

Graphite floating means that there are a large number of graphite balls on the upper surface of the casting, and at this time, the graphite shape, both the original compact ball into the flowering shape. As a result, the surface quality and mechanical properties of castings are deteriorated. The...

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The slag inclusion in ductile iron casting

There are three types of slag addition: the first type of coarse slag is 2mg · SiO2 + MGS or + FES; the second type of strip slag is MgO, and the third type of fine slag is MgO + MGS, which are separate or consistent with precipitation. In...

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Anticorrosive treatment of ductile iron pipe

Asphalt paint coating Asphalt paint coating is used to transport gas pipeline. Preheating the pipe before painting can improve the adhesion of asphalt paint and accelerate drying. Cement mortar lining + special coating This kind of internal anti-corrosion measure is suitable for the pipeline conveying sewage, and can improve...

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Main Properties of Ductile Iron

Ductile iron have almost been applied in many main industrial sectors, where high strength, good plasticity, excellent toughness and wear resistance, intense heat and mechanical shock resistances, high temperature or low temperature resistance, anti-corrosion and dimensional stability are requested. In order to meet these changes in use, ductile iron...

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