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The process of hot-dip galvanizing results in a metallurgical bond between zinc and steel, with a series of distinct iron-zinc alloys. The resulting coated steel can be used in much the same way as uncoated. A typical hot-dip galvanizing line operates as follows: [2] Steel is cleaned using a caustic solution. This removes oil/grease, dirt, and ...
The hot-dip process generally does not reduce strength to a measurable degree, with the exception of high-strength steels where hydrogen embrittlement can become a problem. [7] Thermal diffusion galvanizing, or Sherardizing, provides a zinc diffusion coating on iron- or copper-based materials. [8] [9]
The plant has an annual capacity of 2.9 million net tons of steel from an 80″ hot strip mill, 64″ and 84″ Pickle lines, 84″ five-stand cold reduction mill, continuous annealing line, batch and open-coil annealing facilities, 84″ temper mill, 52″ hot-dip galvanizing line and a 48″ hot-dip galvanizing line, as well as the #11 Shear ...
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Production of galvannealed sheet steel begins with hot dip galvanization of sheet steel. After passing through the galvanizing zinc bath the sheet steel passes through air knives to remove excess zinc, and is then heated in an annealing furnace for several seconds causing iron and zinc layers to diffuse into one another causing the formation of zinc-iron alloy layers at the surface.
It used as a flux in the process of hot-dip galvanizing. [1] [2] [3] Uses.
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Compared to hot-dip galvanization, electrogalvanization offers these significant advantages: Lower thickness deposits to achieve comparable performance; Broader conversion coating availability for increased performance and colour options; Brighter, more aesthetically appealing deposits