含呋喃树脂砂芯砂粘土砂的完全再生砂改性技术研究  

Modification Technology of Total Reclaimed Sand of Used Green Sand Containing Furan Resin Core Sand

作　　者：郝学杰 孙清洲[1,2] 杜航[1,2] 许荣福[1,2] 孙益民[3] 任文成[1,2] 

机构地区：[1]山东建筑大学材料科学与工程学院,山东济南250101 [2]山东省铸造清洁生产工程技术研究中心,山东济南250101 [3]山东大学材料科学与工程学院,山东济南250061

出　　处：《铸造技术》2017年第7期1659-1662,共4页Foundry Technology

基　　金：山东省科技发展计划项目(2014GSF11602)

摘　　要：对含呋喃树脂自硬砂芯砂粘土砂的完全再生砂改性技术进行了研究,发现含呋喃树脂自硬砂芯砂粘土砂的完全再生砂的适宜改性工艺为"改性+烘干+机械搓擦+风选",改性剂适宜加入量为改性剂占砂子质量的1%,改性砂的适宜均化时间为90 min。以盐酸水溶液做为改性剂,以适宜的改性工艺及工艺参数对含呋喃树脂自硬砂芯砂粘土砂的完全再生砂进行改性,然后用改性砂混制呋喃树脂自硬砂,其24 h抗拉强度及可使用时间均优于同种新砂。The modification technology of the total reclamation sand from the used green sand containing furan resin self-hardening core sand was researched. The suitable modification technology of the total reclaimed green sand containing furan resin self-hardening core sand is ＂modification process ＋ drying process ＋ mechanical reclamation ＋ separation of micro-powder＂. In this treatment process, the adequate modifier addition is 1% of the mass of sand and the processing time of modified sand is 90 min. The casting process performance of the total reclamation sand is improved by using the aqueous solution of hydrochloric acid to modify and suitable modification process. The 24 h tensile strength and the bench life of the modified sand are better than that of the new sand.

关 键 词：粘土砂 完全再生 再生砂改性 

分 类 号：TG221[金属学及工艺—铸造]