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Chemical composition of austempered ductile iron blank

The small fluctuation range of chemical composition, especially the content of C, Si, Mn, P, s, re and Mg, is the premise for ADI to achieve the same structure and performance and achieve stable production. The suitable chemical compositions include: 3.2% ~ 3.8% C (recommended 3.4% ~ 3.6% C);...

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Internal quality of austempered ductile iron blank

The quality of ductile iron blank is the key to prepare high performance ADI material. The more graphite spheres are in the matrix of the blank, the smaller the eutectic group is, the smaller the microsegregation is, the more uniform the isothermal transformation products are, and the more stable...

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Development of Austempered Ductile Iron

Austempered Ductile Iron material standard American, European, Japanese and Chinese Austempered Ductile Iron grades and performance standards. The publication and implementation of Austempered Ductile Iron standards in various countries indicate that ADI materials have entered the stage of mass production from the stage of experimental development. In this international...

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Preparation principle of Austempered Ductile Iron

Isothermal transformation of ductile iron The specific process of Austempering is as follows: the nodular iron castings are heated to austenitizing temperature and held for a certain time for complete austenitizing treatment  rapid quenching into the salt bath furnace, oil bath or flow bed furnace, rapidly cooling to...

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