Has anyone experienced hydrogen cracking in ductile irons? We have observed a circular discontinuity on the fracture surface (just below the cast surface) of a ductile iron component, which is similar to what we have seen previously with hydrogen cracking in alloy steel components. Visual and...
Greensand moulds are made using a mixture of sand, clay and water. In days gone by the mixture would have been used as it was dug out of the ground, hence it was termed a natural greensand. Greensand moulding is usually a semi-automated process these days. Therefore I would suggest that the...
