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Proceedings Paper

Optical measurement for the concentrations of the pickling acid with near infrared spectroscopy in steel making industry
Author(s): Gumin Kang; Kwangchil Lee; Haesung Park; Jinho Lee; Youngjean Jung; Kyoungsik Kim
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Paper 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.

Paper Details

Date Published: 1 September 2010
PDF: 4 pages
Proc. SPIE 7792, Reflection, Scattering, and Diffraction from Surfaces II, 77920G (1 September 2010); doi: 10.1117/12.860284
Show Author Affiliations
Gumin Kang, Yonsei Univ. (Korea, Republic of)
Kwangchil Lee, Yonsei Univ. (Korea, Republic of)
Haesung Park, Yonsei Univ. (Korea, Republic of)
Jinho Lee, Yonsei Univ. (Korea, Republic of)
Youngjean Jung, Yonsei Univ. (Korea, Republic of)
Kyoungsik Kim, Yonsei Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 7792:
Reflection, Scattering, and Diffraction from Surfaces II
Zu-Han Gu; Leonard M. Hanssen, Editor(s)

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