Title :
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
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;
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
DOI :
10.1109/ICIMW.2009.5325508
