QT700-3球墨铸铁凸轮轴壳型铸造工艺研究  

Study on Shell Mold Casting Process of QT700-3 Ductile Iron Camshaft

作　　者：陈忠士[1] 邹泽昌[1] 蓝敏俐[1] 杨启明 CHEN Zhong-shi;ZOU Ze-chang;LAN Min-li;YANG Qi-ming(Fujian Chuanzheng Communication College,Fuzhou 350007,Fujian,China;Jiangxi Tongxin Machinery Manufacturing Co.,Ltd.,Guangfeng 334600,Jiangxi,China)

机构地区：[1]福建船政交通职业学院,福建福州350007 [2]江西同欣机械制造有限公司,江西广丰334600

出　　处：《铸造》2022年第3期367-371,共5页Foundry

摘　　要：利用铸造CAE数值模拟,合理设计了高强度、高韧性球墨铸铁的壳型铸造工艺,实现了QT700-3球铁凸轮轴的壳型铸造。结果表明:采用一型两件与半封闭式浇注系统,粗段基轴处壳型厚度为14 mm,其余部位为18 mm,可最大限度地避免和克服凸轮轴中心轴线位置的缩孔和缩松;通过提高铜的加入量和加强球化和孕育处理,可有效地保证QT700-3球铁凸轮轴的力学性能与金相组织。The shell mold casting of QT700-3 nodular iron camshaft was successfully realized by using casting CAE numerical simulation to reasonably design the shell mold thickness of the base shaft of camshaft coarse section.The test results showed that the shell thickness at the thick section of the base shaft was 14 mm and the rest was 18 mm,rwhich can avoid and overcome the shrinkage and porosity at the central axis of the camshaft to the greatest extent.The mechanical properties and microstructure of the QT700-3 ductile iron camshaft can be effectively guaranteed by increasing the amount of copper and strengthening spheroidization and inoculation treatment.

关 键 词：QT700-3 壳型铸造 组织 性能 

分 类 号：TG255[金属学及工艺—铸造]