With proper inoculation foundries can avoid casting defects such as carbides chill shrink or chunky graphite But depending on section thickness any of these defects can reoccur much later in the solidification process This may require another later inoculation step as insurance What can be done to improve the classic inoculation using calciumbearing 75 ferrosilicon

With proper inoculation, foundries can avoid casting defects such as carbides, chill, shrink, or chunky graphite. But, depending on section thickness, any of these defects can reoccur much later in the solidification process. This may require another later inoculation step as insurance. What can be done to improve the classic inoculation using calcium-bearing 75% ferrosilicon?

How to Improve on Classic Inoculation in Cast Irons

Incremental additions of a sulfur-containing inoculant enhancer may improve results for gray or treated ductile iron Effectiveness related to sulfur, oxygen levels Meeting elongation properties Eutectic cell counts and chill tendency

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 P

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