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[en] We have developed a coating weight measurement system based on the principle of magnetic induction. This system extends the measurement range of coating thickness over 200 for galvanized steels, which is not possible by x-ray fluorescence method. Foil-type zinc samples are prepared, as primary standard and polymer films are also prepared as secondary reference samples in case of degradation of zinc foils. The system measures the coating weight automatically for both sides of a sample within three minutes. A control PC transmits data to a main computer and receives process parameters vice versa. By comparison of coating weight measured by chemical strip and weighing method, it is found that the deviations are within 3% for the coating weight of above 200 g/m2. (author)
Source
Brusey, B.W. (Dofasco Inc., Hamilton, Ontario (Canada)); Bussiere, J.F. (Industrial Materials Inst., NRC, Boucherville, Quebec (Canada)); Dubois, M. (GE Corporated R and D, Schenectady, New York (United States)); Moreau, A. (Industrial Materials Inst., NRC, Boucherville, Quebec (Canada)) (eds.); Canadian Inst. of Mining, Metallury and Petroleum, Montreal, Quebec (Canada); 396 p; ISBN 0-919086-92-6; 
; 1999; p. 383-390; Advanced sensors for metals processing - 38. annual conference of metallurgists of CIM. Gateway to the 21st Century; Quebec City, PQ (Canada); 22-26 Aug 1999; 5 refs., 5 figs.
; 1999; p. 383-390; Advanced sensors for metals processing - 38. annual conference of metallurgists of CIM. Gateway to the 21st Century; Quebec City, PQ (Canada); 22-26 Aug 1999; 5 refs., 5 figs.