Laser cleaning and NIR spectroscopy for the pickling process of oxidized steel layers

Author

Kim, Kyoungsik ; Gumin Kang ; Lee, Jinho

Author_Institution

Sch. of Mech. Eng., Yonsei Univ., Seoul, South Korea

fYear

2009

fDate

21-25 Sept. 2009

Firstpage

1

Lastpage

2

Abstract

The objective of this study is to estimate the efficiency of laser cleaning for oxide layer and monitor the concentration of each acid for the pickling liquor under existing steel-pickling process. It was carried out that laser removal of surface oxides and small particles from steel surfaces by using a Q-switched Nd:YAG laser. In order to optimize and cut costs, it is important the optical detection of concentration for mixed acids in the pickling process. For this reason, we studied the cracks through electrochemical laser process and measure components of surface by using Raman microscopy and measure the concentrations of mixed acid by using NIR spectroscopy.

Keywords

Q-switching; Raman spectroscopy; chemical variables measurement; electrochemistry; infrared spectroscopy; laser materials processing; neodymium; pickling (materials processing); solid lasers; spectrochemical analysis; NIR spectroscopy; Q-switched laser; Raman microscopy; YAG:Nd; electrochemical laser process; laser cleaning; mixed acid concentration measurement; optical detection; oxidized steel layers; pickling liquor; solid laser; steel pickling process; Cleaning; Cost function; Laser beam cutting; Monitoring; Optical detectors; Pickling; Spectroscopy; Steel; Surface cracks; Surface emitting lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on

Conference_Location

Busan

Print_ISBN

978-1-4244-5416-7

Electronic_ISBN

978-1-4244-5417-4

Type

conf

DOI

10.1109/ICIMW.2009.5325508

Filename

5325508