Process for preparing erosion resistant foundry shapes with an epoxy-acrylate cold-box binder
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United States of America Patent
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May 25, 2010
Grant Date -
May 1, 2008
app pub date -
Jul 5, 2007
filing date -
Jul 6, 2006
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Abstract
This invention relates to a process for making foundry shapes (e.g. cores and molds) using epoxy-acrylate cold-box binders containing an oxidizing agent and elevated levels of an organofunctional silane, which are cured in the presence of sulfur dioxide, and to a process for casting metals using the foundry shapes. The metal parts have fewer casting defects because the foundry shapes made with the binder are more resistant to erosion.
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