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ArticleName Analytical systems for stainless steel pickling solutions based on mixed acids
ArticleAuthor M. Sartor, D. Buchloh, F. Rögener, T. Reichardt.
ArticleAuthorData Dr. Eng. M. Sartor, Head of the project; Eng. D. Buchloh, Head of the project; Dr. Eng. F. Rögener, Head of the project group; Eng. T. Reichardt, Head of department of halvanizing and surface processing, Scientific and Research Institute VDEh, Düsseldorf; frank.roegener@bfi.de
Abstract
On-line measurement systems for stainless steel pickling solutions — consisting of HF and HNO3 — are not available. Nevertheless a fast and reliable measurement is important to control a pickling line and the subsequent regeneration technology to assure proper pickling performance in steel production and to avoid surface failures. Thus, the operator has the choice between different off-line analysing systems which employ different physical data for parameter detection. In this study the performance of conventional lab analysis and two commercially available measurement systems was compared using the same solutions taken from different stainless steel pickling lines in Germany and Spain. As a result, the applied calculation algorithms are sufficient to control pickling processes.
keywords Analytical systems, stainless steel, pickling, mixed acids, regeneration, nitric acid, hydrofluoric acid.
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Language of full-text russian
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