PDA-5500S型直读光谱仪测定石油套管用钢中Mn含量的不确定度评定

Evaluation of uncertainty in determination of Mn in oil casing steel by PDA-5500S direct reading spectrometer

使用PDA-5500S型直读光谱仪对石油套管用钢的化学成分进行了分析检测，根据JJF1059．1—2012技术标准，对钢中锰含量的不确定度进行评定，建立了数学模型，确定了不确定度的来源，从标准不确定度的A类评定和B类评定入手，确定了不确定度的分量，最后对各个分量进行计算合成，形成钢中Mn元素的不确定度评定报告。

The chemical composition of oil casing steel was analyzed by PDA-5500S direct reading spectrometer, according to the technological standard of JJF1059.1-2012, the uncertainty of element Mn in steel was evaluated, the mathematical model was established, the source of uncertainty was determined, and each component of uncertainty are calculated based on type A and B evaluation of standard uncertainty. Finally, the components of uncertainty are synthesized, the uncertainty evaluation report of the element Mn in steel was produced.