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Alternative TitleOn-line monitoring of elemental composition in molten aluminum by laser-induced breakdown spectroscopy online analyzer for liquid metal composition
辛勇1,2,3,4; 李洋1,2,3; 蔡振荣5; 杨铭5; 杨志家1,2,3; 孙兰香1,2,3
Source Publication冶金分析
Contribution Rank1
Funding Organization国家重点研发计划(No.2016YFF0102502) ; 国家自然科学基金(No.61473279) ; 中科院前沿技术项目(No.QYZDJ-SSW-JSC037)
Keyword激光诱导击穿光谱(LIBS) 在线分析 熔融铝液 相对标准偏差 相对偏差 火花放电原子发射光谱(Spark-OES)
Other AbstractAt present, the composition detection of products in metallurgy and die casting industry usually adopts off-line laboratory analysis, which cannot real-timely guide the production process. The self-developed liquid metal composition on-line analyzer based on laser-induced breakdown spectroscopy (LIBS) can be used for the on-line monitoring of elemental composition in molten metal in the fields of metallurgical industry. The real-time guidance of production process plays an important role to improve the product quality and reduce energy consumption. Firstly, the solid aluminum alloy standard sample of LF6 series were used to test LIBS on-line analyzer for liquid metal composition in laboratory. All performance indexes of instrument were verified. Then, the samples in die casting plants (the contents of Si, Fe, Cu, Mn, Ti and Mg had been calibrated by spark discharge atomic emission spectrometer in spectrographic laboratory) were used to calibrate the LIBS on-line analyzer for liquid metal composition. Finally, ten aluminum ladles containing molten aluminum were randomly selected in the field for on-line analysis by LIBS. Meanwhile, the samples were also off-line analyzed in spectrographic laboratory for comparison. The results showed that the relative standard deviations (RSD) of on-line analysis results were mostly about 2% for Si, Fe, Cu, Mn and Ti. The fluctuation of RSD values for Mg was relatively large, i.e., about 10%. The absolute values of relative deviations were basically less than 2% for Si, less than 5% for Fe, Cu, Mn and Ti, and more than 20% for Mg. Therefore, except for Mg, the measurement precision and accuracy of LIBS on-line analyzer for liquid metal composition could meet the field requirements in industry. The chemical composition of molten aluminum could be on-line monitored, which improved the production efficiency and also reduced the energy consumption. However, the determination precision and accuracy were relatively low for Mg, which should be further studied and improved.
Document Type期刊论文
Corresponding Author孙兰香
Recommended Citation
GB/T 7714
辛勇,李洋,蔡振荣,等. 激光诱导击穿光谱液态金属成分在线分析仪在线监测熔融铝液中元素成分[J]. 冶金分析,2019,39(1):15-20.
APA 辛勇,李洋,蔡振荣,杨铭,杨志家,&孙兰香.(2019).激光诱导击穿光谱液态金属成分在线分析仪在线监测熔融铝液中元素成分.冶金分析,39(1),15-20.
MLA 辛勇,et al."激光诱导击穿光谱液态金属成分在线分析仪在线监测熔融铝液中元素成分".冶金分析 39.1(2019):15-20.
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