连铸工艺参数对复合铜包钢线组织与性能的影响  

Effects of continuous casting composite parameters on microstructure and property of copper clad steel wires

作　　者：陈旭东 赵帆 姜雁斌 田树科 刘啸 刘新华 CHEN Xu-dong;ZHAO Fan;JIANG Yan-bin;TIAN Shu-ke;LIU Xiao;LIU Xin-hua(Beijing Laboratory of Metallic Materials and Processing for Modern Transportation,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China;Institute for Advanced Materials and Technology,Key Laboratory for Advanced Materials Processing,Ministry of Education,University of Science and Technology Beijing,Beijing 100083,China;Institute for Advanced Materials and Technology,Beijing Advanced Innovation Center for Materials Genome Engineering,University of Science and Technology Beijing,Beijing 100083,China;School of Materials Science and Engineering,Central South University,Changsha 410083,China)

机构地区：[1]北京科技大学新材料技术研究院现代交通金属材料与加工技术北京实验室,北京100083 [2]北京科技大学新材料技术研究院材料先进制备技术教育部重点实验室,北京100083 [3]北京科技大学北京材料基因工程高精尖创新中心,北京100083 [4]中南大学材料科学与工程学院,长沙410083

出　　处：《中国有色金属学报》2023年第10期3205-3214,共10页The Chinese Journal of Nonferrous Metals

基　　金：国家重点研发计划资助项目(2018YFA0707303);国家自然科学基金资助项目(51925401)。

摘　　要：连铸复合法是制备高性能金属复合材料的新方法,提高连铸速度对提高生产效率、降低生产成本具有重要现实意义,连铸速度的提升将显著影响连铸复合过程凝固行为和铸坯质量。本研究采用连铸复合法制备外径8.7 mm、芯材直径6 mm的纯铜包覆Q235钢线,研究较高速连铸状态下工艺参数对铜包钢线表面质量、铜包覆层组织、界面扩散层厚度和界面剪切强度的影响。结果表明:在连铸速度300~420 mm/min、复合温度1150℃、一次冷却水流量400~800 L/h、二冷水流量100 L/h的工艺条件下制备的铜包钢线表面质量较好,铜层晶粒细小,界面结合强度高。Continuous casting composite is a new method to prepare high performance metal composite materials.Improving continuous casting speed has important practical significance for improving production efficiency and reducing production cost.The increase of continuous casting speed will significantly affect the solidification behavior and billet quality.In this study,pure copper clad Q235 steel wire with outer diameter of 8.7 mm and core diameter of 6 mm was prepared by continuous casting composite method;and the influences of process parameters on the surface quality,copper layer microstructure,interfacial diffusion layer thickness and interfacial bonding strength were studied.The results show that copper-clad steel wire with low surface roughness value,finer grain of copper layer and high bonding strength can be fabricated under processing parameters of composite temperature of 1150℃,primary cooling water flow of 400-800 L/h,secondary cooling water flow of 100 L/h and continuous casting speed of 300-420 mm/min.This provides a foundation for large-scale production of copper-clad steel wires.

关 键 词：铜包钢 连铸复合 表面质量 包覆层 界面强度 

分 类 号：TG244[金属学及工艺—铸造]