摘要
试验在温度场等条件不变的情况下,研究了提纯速度对杂质浓度的影响行为,通过理论计算得出提纯速度的理论取值范围,在此基础上结合试验结果得出了如下结论:拉晶速度越慢对铝液中Fe和Si元素提纯效果越好,铝液中杂质元素含量越低。随着拉晶速度的变慢杂质元素提纯效率趋于稳定,且始终有k_(有效)<k_0,故若想继续提高金属纯度,需进行多次的重复提纯。
The influence of purification speed on impurity concentration was investigated under the temperature field and other conditions invariable. The theoretical values ranges of purification speed were obtained through the theoretical calculation. The results show that the slower the pulling speed is, the better the purification effect for Fe and Si element is in liquid aluminum, the lower the impurity elements content in liquid aluminum is. As the pulling speed slow, the purification efficiency of impurity element tends to be stable, and the k（effectivity） is lower than k0 all the time. So if need continue to improve the metal purity, the purification process need be repeated many times.
出处
《铸造技术》
CAS
北大核心
2016年第6期1195-1196,1201,共3页
Foundry Technology
基金
云南省科技创新平台建设计划-科研院所技术开发项目(2015DC003)
云南省应用基础研究计划面上项目(C0120150275)
关键词
偏析提纯
高纯铝
提纯速度
segregation purification
high purity aluminum
purification speed
