Optical measurement for the concentrations of the pickling acid with near infrared spectroscopy in steel making industry

Gumin Kang; Kwangchil Lee; Haesung Park; Jinho Lee; Youngjean Jung; Kyoungsik Kim

doi:10.1117/12.860284

1 September 2010 Optical measurement for the concentrations of the pickling acid with near infrared spectroscopy in steel making industry

Gumin Kang, Kwangchil Lee, Haesung Park, Jinho Lee, Youngjean Jung, Kyoungsik Kim

Author Affiliations +

Proceedings Volume 7792, Reflection, Scattering, and Diffraction from Surfaces II; 77920G (2010) https://doi.org/10.1117/12.860284
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

In the manufacturing process of stainless steel, it is essential to pickle the oxide layer of steel surface for high corrosion resistance and fine surface quality. Pickling liquor of stainless steel is commonly composed of mixed hydrofluoric and nitric acid. Real time monitoring of concentrations of each acid is crucial to optimize pickling process. It also reduces cost of production and decreases the generation of waste acid. We used non-contact near infrared spectroscopy technique and rapid analysis method, for the quantification of each acid in an on-line manner. Multivariate calibration such as partial least square regression method is employed for the better prediction results.

Citation Download Citation

Gumin Kang, Kwangchil Lee, Haesung Park, Jinho Lee, Youngjean Jung, and Kyoungsik Kim "Optical measurement for the concentrations of the pickling acid with near infrared spectroscopy in steel making industry", Proc. SPIE 7792, Reflection, Scattering, and Diffraction from Surfaces II, 77920G (1 September 2010); https://doi.org/10.1117/12.860284

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