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The purpose of this seminar is to inform and educate architects, engineers, and other specifiers about hot-dip galvanized steel and how it can address the growing corrosion problem throughout North America.
The first written record of galvanizing describes how a French chemist named Melouin presented a method of coating iron by immersing it in molten zinc to the French Royal Academy in 1742. Sorel, another French chemist patented a process for coating iron with zinc after preparing it with 9% sulfuric acid followed by fluxing with ammonium chloride. Great Britain granted a patent for a similar process in 1837. By 1850, galvanizing had become a generally accepted practice for the protection of iron and steel with 10,000 tons of zinc per year used for the protection steel.
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Hot dip galvanizing steel articles after fabrication is one of the most widely used methods to provide corrosion protection. As a final step in the process, the hot dip galvanized coating is inspected for compliance with specifications. Correct measurement techniques and accurate interpretation of the results are necessary to provide an acceptable hot dip galvanized coating.