Porosity Defects in Iron Other methods ... - asi-alloys.com

silver Anniversary Paper, Div. 5 effective in eliminating Porosity . Additions of Zr silicide to a new, proprietary oxy-sulfide-containing inoculant was also very effective in eliminating Porosity . Porosity Defects in iron Other methods for eliminating Defects , although not nearly as practical, were core post-baking at 450F (232C) and use of core Castings From Mold-Metal coatings modified with red iron oxide. Interface Reactions BACKGROUND. Naro Surface and subsurface gas Defects have always been common and ASI International, Inc. troublesome Defects in gray iron and Other castings poured in green sand molds. Within the past 30 years, however, innovations in Cleveland, Ohio synthetic binder technology have resulted in movement away from green sand molding and toward total nobake molding and coremaking ABSTRACT processes and the accompanying new types of casting Defects . In the 25 years since the original paper was written, there have The growth in phenolic urethane binder technology since 1970, been considerable technical advances in foundry binder tech- the year phenolic urethane nobake (PUNB) binders were introduced, nology, as well as sand mixing and processing equipment.

AFS Transactions 839 Silver Anniversary Paper, Div. 5 Porosity Defects in Iron Castings From Mold-Metal Interface Reactions R.L. Naro ASI International, Inc.

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