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One of the most effective ways to eliminate casting defects of shrinkage origin "crack" and "shrink shell" is the addition of iron oxide to the core mixture in the production of rods and molds.
When casting molds and subsequent crystallization of castings, quartz sand in interaction with iron oxide forms fayalite, which does not prevent metal shrinkage and allows you to obtain high-quality castings.
The company uses iron oxide from various manufacturers "FSK Chemical", etc. under the trademarks "Additiv", "Tipe 40", "Oxidiks 150".
At the moment, FerroSAND™ iron oxide is used — magnetite of natural origin, which shows itself no worse than previously used ones.
Dmitry Medvedev, thank you for your feedback! We are glad that we managed to leave positive impressions. We hope for fruitful cooperation!
