The metallurgy of zinc-coated steel - ScienceDirect
2000-6-1 · The steel sheet then enters the Sendzimir Mill cleaning section, Fig. 1, at about 500–760°C in a N 2 /H 2 reducing atmosphere that will further reduce residual organic contaminants and surface oxides. In the process of cold rolling prior to hot-dip galvanizing, the newly created surface of the sheet is spontaneously oxidized to Fe-oxide and Fe-hydroxide, and upon heating is completely reduced.
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