石墨模具参数对紫铜水平连铸坯质量影响研究  

Study on the Influence of Graphite Mold Parameters on the Quality of Copper Horizontal Continuous Casting Slab

作　　者：张良利 刘劲松[1,2] 王松伟 孔凡亚[2] 刘羽飞 张旺 ZHANG Liang-li;LIU Jin-song;WANG Song-wei;KONG Fan-ya;LIU Yu-fei;ZHANG Wang(School of Materials Science and Engineering,Shenyang Ligong University,Shenyang 110159,Liaoning,China;Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang110016,Liaoning,China;JCC Copper Strip Co.,Ltd.,Nanchang 330096,Jiangxi,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110159 [2]中国科学院金属研究所,师昌绪先进材料创新中心,辽宁沈阳110016 [3]江西铜业集团铜板带有限公司,江西南昌330096

出　　处：《铜业工程》2022年第5期1-6,共6页Copper Engineering

基　　金：中国科学院重点部署项目(ZDRW-CN-2021-3)。

摘　　要：某公司双流水平连铸结晶器中使用石墨模具生产紫铜板带,以石墨模具为研究对象,通过对铸坯温度、质量、组织三方面进行比较与分析,发现用3#石墨模具生产的双流A、B带铸坯温度较均匀,成材率偏高,整体晶粒尺寸细小,晶粒数目多。在此基础上,通过有限元模拟揭示了石墨的物性参数与铸坯温度之间的关系,即随着石墨导热系数的增加,铸坯凝固释放的热量增多,铸坯温度降低,石墨板的壁面温度升高。石墨密度与铸坯温度之间并无直接对应关系,需要与其他物性参数共同作用来调节铸坯质量。A company uses graphite mold to produce red copper plate and strip in double flow horizontal continuous casting mold.Taking graphite mold as the research object,through comparison and analysis of billet temperature,quality and organization,it is found that the temperature of double flow A and B belts produced with 3#graphite mold is relatively uniform,the yield is high,the overall grain size is small,and the number of grains is large.On this basis,the relationship between the physical parameters of graphite and the slab temperature is revealed through finite element simulation,that is,with the increase of the thermal conductivity of graphite,the heat released by the solidification of the slab increases,the slab temperature decreases,and the wall temperature of the graphite plate increases;There is no direct relationship between graphite density and slab temperature,so it needs to work with other physical parameters to adjust slab quality.

关 键 词：石墨模具 导热系数 密度 水平连铸 紫铜板带 成材率 

分 类 号：TG249.7[金属学及工艺—铸造]