Hot-dip galvanizing is the
reaction of molten metal with an iron substrate to produce an alloy
layer, thereby combining the substrate and the plating layer.
Hot-dip galvanizing is to pickle iron and steel parts first. In
order to remove iron oxide on the surface of iron and steel parts,
after pickling, it is cleaned in an ammonium chloride or zinc
chloride aqueous solution or a mixed solution of ammonium chloride
and zinc chloride.And then sent to the hot-dip plating bath.
Hot-dip galvanizing has the advantages of uniform coating, strong
adhesion and long service life
