A new processing method for producing hot-dip galvanized steel has been designed and tested, in which pickling is skipped. Hot-rolled low carbon steel sheets were annealed under a hydrogen reducing atmosphere, prior to galvanizing on a hot-dip galvanizing simulator. Electron probe micro-analyzer was used to analyze the results of the reduction and the structure of zinc coating. It was found that, after reducing by hydrogen for 4min, the oxide scale on the strips was mostly reduced to pure iron, which improves the wettability of the strip and enhances coating adherence. The overlay coatings on the galvanized strips have uniform structure. The cold bending test results show that the coating have a superior adherence.
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