| 摘要 |
<p>The invention relates to a cold-box process for preparing foundry shapes. The process involves curing a foundry shape by subjecting it to carbon dioxide and heat. The foundry shape is made by mixing an aggregate with a foundry binder comprising: (a) an aqueous basic solution of a phenolic resole resin; and (b) preferably a compound which is a source of an oxyanion. The invention also relates to a process of making metal castings with the foundry shapes.</p> |
