| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.22 ( May 1990 ) Advanced Technologies of Iron and Steel, Commemorating the 20th Anniversary of the Technical Research Division ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Development of On-line Analysis Methods for Zinc Alloy Coatings for Automotive Use Chiaki Kato, Yasuharu Matsumura, Akira Yamamoto, Toshio Irie |
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Synopsis : On-line analysis methods, which analyze Zn alloy and organic resin coated steels for automotive panels, have been developed and employed in Kawasaki's galvanizing and coating lines. X-ray fluorescence spectrometry is applied to the analysis of Zn-Ni alloy electroplated coatings and electrolytes. For the analyses of Fe-P/Zn-Fe alloy electroplated double-layer coatings and hot-dip galvannealed coatings, X-ray diffraction is used in combination with X-ray fluorescence spectrometry to distinguish Fe in coating from that in the base steel. On-line thickness measurement methods for the thin organic resin top layers on Zn-Ni alloy coatings are also discussed. |
| TextiPDF: 7p./328kbj |