In the production of gray and ductile irons, the development of the proper graphite shape is essential for meeting required physical requirements. To achieve the desired graphitization and shape, it is mandatory to have “seeds”(nuclei) in the molten iron to provide for the starting points for graphitization. Inoculants for gray and ductile irons are almost always, without exception, based on ferrosilicon. It is the base ingredient to which Group II and IIIA elements in the ...

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