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Subject: Effect of boron in perlite formation of a ductile iron

Date: 10/02/00 at 3:29 AM
Posted by: Daniel Santos
E-mail: pelarigo@hotmail.com
Message Posted:

We have a ductile iron foundry. Our Boro (B) contents in the iron melt are
> in the range of 0.0002%. It was verified that when the Boro content is
> >0.0009 the perlite content decreases from 60% to 30%. When this happened,
> every other elements were in the normal levels. So we have concluded that
> the responsible was Boro. Does anyone knows why this happened? What is the
> effect of Boro in the perlite formation?

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