Shell core and cold box coremaking are the main technique at present.
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2. 论述了冷芯盒制芯的优点及降低粘结剂用量的基本途径。
This paper describes the advantage of coremaking with cold core boxes and the basic approach to reduce the volume of bonding agent in coremaking.
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3. 本文分析了冷芯盒村脂砂芯条件下缸体铸件内腔结疤的原因。
This paper the cause of the scab of the inside surface of cylinder block on condition that the resin sand cores are made in cold core box.
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4. 采用冷芯盒法制芯时，粘结剂中的溶剂含量对砂芯强度有较大影响。
In core making with cold core box, the solvent content in the binding material has a greater influence on the sand core strength.
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5. 冷芯盒树脂砂进入湿型砂系统会使湿型砂性能和铸件表面质量下降。
Properties of the green sand and the surface quality of the casting may be decreased due to the resin sand of cold box cores entering the green sand system.
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6. 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.
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7. 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 relationship between core making technique and the properties of core was analyzed.
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8. 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.
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9. 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；
The paper introduces the present situation, Charac-teristice, principle and typical process flow of SO_2 gassing hardening cold box process in our country.
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10. 在确定最佳合成工艺条件的基础上，对CO_2固化酚醛树脂砂冷芯盒工艺条件进行了研究。
On the basis of the optimum synthesis conditions, the techniques of the CO_2-cured phenolic resin for cold-box are researched.
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11. 在确定最佳合成工艺条件的基础上，对CO_2固化酚醛树脂砂冷芯盒工艺条件进行了研究。
On the basis of the optimum synthesis conditions, the techniques of the CO_2-cured phenolic resin for cold-box are researched.
