The paper introduces the present situation, Charac-teristice, principle and typical process flow of SO_2 gassing hardening cold box process in our country.
文章介绍了我国目前SO_2吹气硬化冷芯盒制芯的现状、特点、原理及典型的工艺流程；
Based on domestic materials used in the Phenolic Urethane Cold Box Process (PUCB), the relationship between core making technique and the properties of core was analyzed.
在立足于国产制芯原材料的基础上，研究了三乙胺冷芯盒工艺对砂芯性能的影响。
Based on domestic materials used in the Phenolic Urethane Cold Box Process (PUCB), the relationships between coremaking parameters and the properties of cores have been studied.
在立足于国产制芯原材料的基础上，研究了三乙胺冷芯盒工艺对砂芯性能的影响。
CO2-cured binder system not only has the advantages as a cold-box process but also has the superiority in the environmental protection.
铸造用CO2硬化粘结剂系统具有气硬冷芯盒的优点，同时又具有环保方面的优势。
CO2-cured binder system not only has the advantages as a cold-box process but also has the superiority in the environmental protection.
铸造用CO2硬化粘结剂系统具有气硬冷芯盒的优点，同时又具有环保方面的优势。
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