基于MCM全反射模型的镀锌层质量测量方法
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摘要
提出一种基于TXRF(Total-Reflection X-ray Fluorescence)的锌层质量标准曲线的理论计算方法.该方法首先利用材料参数和射线源参数建立MCM(Monte Carlo Method)物理模型.然后将某冷轧厂的标准镀锌板锌层厚度值输入仿真物理模型,得到各标准板对应的荧光光子注量.最后将厚度值对光子注量作图建立标准测量曲线,相关系数为0.9992.在相同实验条件下,测得未知镀锌板的荧光光子注量,通过插入法在标准曲线上得到相应的锌层厚度,并与多种方法进行测量比对.结果表明:所提出的计算方法可应用于锌层单位面积质量为50～140 g·m~(-2)的常规镀锌板测量.
A total-reflection X-ray fluorescence based theoretical calculation method for the standard measurement curve of zinc coating weight is proposed. In this method, the physical model of MCM(Monte Carlo Method) is established by using the materials parameters and the X-ray source parameters. Then the standard zinc coating thickness of a cold-steel rolling mill is input to the simulation physical model, and the fluorescence photon flux corresponding to the standard plate is obtained. Finally, a standard measurement curve is set up by mapping the thickness value to the fluorescence photon flux. The correlation coefficient is 0.9992. Under the same experimental conditions, the fluorescence photon flux of the unknown galvanized plate was measured, and the corresponding zinc layer thickness was obtained on the standard curve by inserting method, and compared with various methods. The results show that the proposed method can be applied to measure the zinc coating weight between 50 and 140 g per unit area of conventional galvanized plate.
A total-reflection X-ray fluorescence based theoretical calculation method for the standard measurement curve of zinc coating weight is proposed. In this method, the physical model of MCM(Monte Carlo Method) is established by using the materials parameters and the X-ray source parameters. Then the standard zinc coating thickness of a cold-steel rolling mill is input to the simulation physical model, and the fluorescence photon flux corresponding to the standard plate is obtained. Finally, a standard measurement curve is set up by mapping the thickness value to the fluorescence photon flux. The correlation coefficient is 0.9992. Under the same experimental conditions, the fluorescence photon flux of the unknown galvanized plate was measured, and the corresponding zinc layer thickness was obtained on the standard curve by inserting method, and compared with various methods. The results show that the proposed method can be applied to measure the zinc coating weight between 50 and 140 g per unit area of conventional galvanized plate.
引文
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[2] 赵欣, 赵卫红. 连续热镀锌生产线中锌层重量的精确控制研究[J]. 山西冶金, 2016(1) : 83-85.
[3] 李钢, 郭家涛, 刘佑爽,等. 浅谈热镀锌超薄锌层控制与实践[J]. 新疆钢铁, 2016(2) :38-39.
[4] 张顺, 王玉星, 张凯. 热浸锌钢板锌层厚度研究[J]. 电镀与精饰, 2016, 38(4):40-43.
[5] JALEL Ben Nasr, ALI Snoussi, CHEDLY Bradai, et al. Effect of the withdrawal speed on the thickness of the zinc layer in hot dip pure zinc coatings[J]. Materials Letter, 2008(62): 2150-2152.
[6] CHIEN Ming Chen, JENG Hwa Lin, TSE Wei Hsu, et al. Improvement of zinc coating weight control for transition of target change[J]. Corrosion Science and Technology, 2010, 9(3): 105-108.
[7] 张岩, 邵富群, 王军生,等. 基于模糊自适应模型的热镀锌锌层厚度控制[J]. 沈阳工业大学学报, 2012, 34(5): 576-580.
[8] 卫巍, 程国营. X射线荧光测量技术在冷轧镀锌处理线的应用[J]. 宝钢技术, 2007(1): 54-57.
[9] 冀星晖, 王铎, 冯钢. 锌层测厚仪在镀锌线上的应用[J]. 包钢科技, 2012, 38(4): 51-52.
[10] 魏向军. 全反射相关的X射线荧光分析技术及其应用[D]. 兰州: 兰州大学, 2006.
[11] 安福林. 用X射线荧光分析法测量铁板镀锌厚度[J]. 核电子学与探测技术, 1995, 15(4): 224-227.
[12] 安福林. 镀锌测厚仪[J]. 核电子学与探测技术, 1997, 17(4): 288-291.
[13] 郑永春, 岑耀东, 田荣彬. 带钢连续热镀锌层厚度控制技术的研究[J].电镀与环保, 2012, 32(6): 18-20.
[14] YONEDA Y, HORIUCHI T. Optical flats for use in X-ray spectrochemical microanalysis[J]. Review of Scientific Instruments, 1971, 42(7): 1069-1070.
[15] BOHLEN A V. Total reflection X-ray fluorescence and grazing incidence X-ray spectrometry-Tools for micro- and surface analysis. A review[J]. Spectrochimica Acta Part B, 2009, 64(9): 821-832.
[16] SHULTIS J K, FAW E E. An mcnp primer[EB/DL]. [2011].http://www.mne.ksu.edu/～jks/MCNPprmr.pdf.
[17] BRIESMEISTER J F. MCNPTM - A general monte carlo N-particle transport code[M]. Version 4C. New Mexico: Los Alamos National Laboratory, 2000.
[18] WILLIAMS R G, GESH C J, PAGH R T. Compendium of material composition data for radiation transport modeling[J]. Office of Scientific & Technical Information Technical Reports, 2011: T10095-T10095-7.
[19] 谈育煦, 胡志忠. 材料研究方法[M]. 北京: 机械工业出版社, 2004.