无氧铜连铸锭氧含量及裂纹控制  

Oxygen Content and Crack Control of Oxygen-free Copper Continuous Casting Ingot

作　　者：丁磊 郭明恩[1] 陈英豪 Ding Lei;Guo Ming’en;Chen Yinghao(College of Mechatronics and Automobile Engineering,Yantai University)

机构地区：[1]烟台大学机电汽车工程学院

出　　处：《特种铸造及有色合金》2019年第12期1345-1347,共3页Special Casting & Nonferrous Alloys

摘　　要：对降低无氧铜连铸锭的含氧量和裂纹消除进行了研究。首先通过保温熔炼整体炉的研制将保温、熔炼工序合二为一,将铜合金传统上的三段式制备方法升级为熔炼保温和连铸的两段式制备方法;其次,提出并实现了控制熔体流动与停止的闸阀技术,最后对宽厚比为650mm/20mm的无氧铜铸锭的裂纹缺陷进行了分析,通过设置合理的冷却参数,控制铸锭的含氧量≤0.0004%,使铸件密度增大到8.94~8.95g/cm^3,裂纹完全消除。The decrease of oxygen content and crack in oxygen-free copper ingots were analyzed.Firstly,through the development of an integrated holding temperature smelting furnace,the holding temperature and melting process were integrated into the whole.Therefore,the traditional three-stage fabrication method of alloy copper was modified into a two-stage fabrication method of holding smelting and drawing casting of anaerobic copper.Secondly,the gate valve technology of controlling melt flow and stopping was proposed and realized.Thirdly,the crack of anaerobic copper ingot with width/thickness ratio of 650mm/20mm was analyzed.Finally,the reasonable cooling parameters were determined through experiments.With ingot oxygen content≤0.0004% and density increased to 8.94~8.9 g/cm^3,crack is completely eliminated.

关 键 词：水平连铸 无氧铜铸锭 含氧量 密度 

分 类 号：TF135[冶金工程—冶金物理化学] TG249.7[金属学及工艺—铸造]