ON-LINE PHASE AND ALLOYING DEGREE MEASUREMENT SYSTEM FOR GALVANNEALED COATINGS

Jae-Hwa Hong, Jeong-Mok Kim, Eun-Do Kim, Gi-Deok Park, Kyu-Sam Hwang, Soon-Ju Kwon
Abstract:
An on-line measurement system for phase fraction and alloying degree of galvannealed steel has been developed using an X-ray diffraction method. Intensities of diffraction peaks of Γ, δ, ζ and η iron-zinc phases were utilized for the determination of each phase fraction and alloying degree. Calibration curves were constructed using laboratory prepared standard reference samples and multiple regression technique. The system has been employed in POSCO‚Äôs galvannealing line at Kwang Yang Works for process monitoring.
Keywords:
galvannealed steel, alloying degree, iron-zinc inter-metallic phase
Download:
PWC-2003-TC14-031.pdf
DOI:
-
Event details
Event name:
XVII IMEKO World Congress
Title:

Metrology in the 3rd Millennium

Place:
Dubrovnik, CROATIA
Time:
22 June 2003 - 28 June 2003