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水玻璃砂──未来化学粘结剂砂的主力军 被引量:4

Silicate Sand-Dominant Chemical Binding Sand in 21th Century
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摘要 研制了一种获得国家实用新型专利的LGG型水玻璃旧砂机械法再生机、成功地用于水玻璃砂再生后,再生砂的残留Na2O含量可降低到0.2%以下,并可单独(100%)地作为原砂使用。还研究了微波硬化水玻璃砂,其常温比强度是CO2硬化水玻璃砂的12倍,水玻璃加入量可大幅度减少,因而其溃散性问题迎刃而解;还首次将纳米测试技术引入铸造研究领域,揭示了微波硬化水玻璃砂强度高的原因。 The patented machine LGG for silicate sand reclamation,that can also reduce the content of Na,O in used silicate sand to below 0.2%, has been invented. Meanwhile, the microwave cured silicate sand process, by which strength of cores cured has the strength that is 11 times higher than that of those cured by CO, process, is investigated. The microwave process can greatly reduce the requsite content of waterglass in sand,that makes the reclamation much easier. The reason for that microwave cured silicate sand has such high strength is revealed by using nanometer testing technology. LGG and microwave process have solved the three big problems of poor collapsibility,being difficult to reclaim and low strength of silicate sand. Silicate sand,which has the advantages of being easy to make. lower cost and no pollution, will lead foundry to be among white-collar professions in the coming 21st century.
机构地区 华中理工大学
出处 《中国机械工程》 CAS CSCD 北大核心 1996年第6期70-72,共3页 China Mechanical Engineering
基金 中国博士后科学基金
关键词 水玻璃砂 微波硬化 旧砂再生机 铸造 silicate sand mechanical reclamation microwave curing nanometer microstructure
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