摘要
论述了CO2硬化工艺的传统概念,提出了水玻璃砂硬化新概念。水玻璃砂硬化法。烘硬法、VRH法、有机酯自硬法和CO2硬化法,都有相同的硬化机理,硬化的直接原因都是脱水,而不是化学反应;硬化后的终强度主要来源于未反应的水玻璃的脱水,所以本质上都是物理硬化。
The traditional ideas of CO2 setting process was discussed and the newconception of hardening of silicate-bonded sand was proposed.All the settingprocesses covering heat setting, VRH process,ester selfsetting and CO2 process have identical hardening mechanism.The setting process can be regardedas a form of dehydration, not chemical reaction and their final strengthafter hardening depends mainly on the dehydrations of the unracted sodiumsilicate,therefore they are all esselltially physical hardening.
出处
《铸造》
CAS
CSCD
北大核心
1994年第1期9-14,共6页
Foundry