电感耦合等离子体发射光谱法测定钛合金中铝的质量控制图
刘攀,张健豪,张毅,杜米芳,张欣耀
中国船舶集团有限公司第七二五研究所(洛阳船舶材料研究所),国家新材料生产应用示范平台(先进海工与高技术船舶材料),河南省船舶及海工装备结构材料技术与应用重点实验室,河南洛阳 471023
Quality control chart for the determination of aluminum in titanium alloyby inductively coupled plasma emission spectrometry
LIU Pan, ZHANG Jianhao, ZHANG Yi, DU Mifang, ZHANG Xinyao
Luoyang Ship Material Research Institute, National New Material Production and Application Demonstration Platform (Advanced MarineEngineering and High-tech Ship Materials), Henan Key Laboratory of Technology and Application of Structural Materials for Ship and MarineEquipment, Luoyang 471023, China
摘要:探讨了控制图在电感耦合等离子体发射光谱法测定钛合金中铝量的测量系统与试验过程质量控制中探讨了控制图在电感耦合等离子体发射光谱法测定钛合金中铝量的测量系统与试验过程质量控制中的应用。对Ti-6Al-4V(TC44)钛合金质控样品中铝含量的系列期间测量结果进行了正态性检验、精密度与偏倚检验,建立了单值和移动极差控制图。利用叠加指数加权移动平均值,进一步提高微小漂移的检出灵敏度。控制图未见失控点,测量系统与试验过程处于受控状态。基于Top-down理念,评定了测量不确定度,测量结果表示为w(Al)=(6.55±0.13)%,k=2。控制图可反映较长时期内的质量控制水平,适用于实验室常规检测项目的过程质量控制。
Abstract:The application of control chart in quality control audit during the measurement system and test process for determination of aluminum contents in titanium alloy by inductively coupled plasma emission spectrometry was discussed. The normality,precision and bias of series measurement results of aluminum content in Ti-6Al-4V titanium alloy quality control samples under intermediate precision conditions were tested, then the single value and moving range control charts were established. Moreover, the exponentially weighted moving average chart was plotted to improve the detection sensitivity of micro drift of the measurement system. The quality control adult of the measurement system and test progress was monitored completely and systematically. There was no out-of-control point in control charts, indicating that whole measurement system and test progress was in controlled state. The measurement uncertainty was evaluated based on top-down approach, expressed as w(Al)=(6.55±0.13)%,k=2. The control chart could reflect the quality control level for a relatively longer period, which would be suitable and practical for the process quality control of routine test in laboratories.
关键词:电感耦合等离子体发射光谱法;钛合金;铝;质量控制;控制图;测量不确定度
Keywords:inductively coupled plasma emission spectrometry; titanium alloy; aluminum; quality control; controlchart; measurement uncertainty
基金:国家新材料生产应用示范平台建设项目(TC180A6MR/2)
本文引用格式:
刘攀,张健豪,张毅,等.电感耦合等离子体发射光谱法测定钛合金中铝的质量控制图[J].化学分析计量,2022,31(1):5.LIU Pan,ZHANG Jianhao,ZHANG Yi,et al. Quality control chart for the determination of Aluminum in titanium alloy by inductively coupled plasma emission spectrometry[J]. Chemical Analysis and Meterage,2022,31(1):5.
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