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Outside the wire annealing

- Apr 10, 2018 -

Zinc coating annealing is a professional term used in metallurgical industry.

Outside the wire annealing

It is the hot rolled or cold rolled steel plate before the hot galvanizing operation line, first in the bottom type annealing furnace or the cover type annealing furnace, so that the galvanizing line does not have the annealing process.Steel plate must maintain a clean pure iron active surface with no oxides and other dirt prior to galvanizing.This approach is to first by pickling method by annealing the surface oxidation of iron removal, then coated with a layer of zinc chloride or consisting of ammonium chloride and zinc chloride mixed solvent, thus prevent the oxidation of the steel plate to be