Abstract
In steel industries a need exists for the reduction of variation in the element concentrations. This need is triggered by an increasing demand for high quality steel products by clients. The results of a large-scale experiment concerning the identification and quantification of sources of variation in the production, sampling and analysis of steel are presented. The results are obtained by means of a strategic approach that consists of six steps. By means of this strategic approach, insight is obtained in the build-up of the total variation. This knowledge can be used to reduce the influence of those factors that have a major impact on the total variation. Attention is focused on estimating the magnitude of sources of variation apparent in sampling of certain stages of the steel making process and in analysis of steel samples by means of spark emission spectrometry.
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Received: 6 November 1999 / Revised: 10 February 2000 / Accepted: 19 March 2000
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Jellema, R., Louwerse, D., Smilde, A. et al. Identification and quantification of sources of variation in the analysis of steel. Fresenius J Anal Chem 368, 397–406 (2000). https://doi.org/10.1007/s002160000471
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DOI: https://doi.org/10.1007/s002160000471