A hot-dip galvanizer is a professional or facility that specializes in the process of hot-dip galvanizing. Hot-dip galvanizing is a method used to protect steel and iron from corrosion by coating them with a layer of zinc. This process involves immersing the metal components into a bath of molten zinc, creating a metallurgical bond between the zinc and the steel or iron substrate.
Surface Preparation: The metal components are cleaned to remove any rust, scale, or other impurities from the surface. This is usually done through processes like pickling or abrasive cleaning.
Fluxing: The cleaned metal is dipped into a flux solution to remove any remaining oxides and provide a clean surface for the zinc coating to adhere.
Galvanizing Bath: The metal is then immersed into a bath of molten zinc, typically maintained at a temperature around 450°C (850°F). The high temperature allows the zinc to react with the steel or iron, forming a series of zinc-iron alloy layers.
Quenching: After immersion in the zinc bath, the coated metal is lifted out and allowed to cool in the air or may be quenched in water to solidify the zinc coating.
The hot-dip galvanizing process provides excellent corrosion protection to steel and iron structures, making it a widely used method for a variety of applications such as structural steel, outdoor equipment, fencing, and more. The zinc coating acts as a barrier against corrosive elements, and it also provides cathodic protection, sacrificing itself to protect the underlying metal if any scratches or damages occur.
Hot-dip galvanizers play a crucial role in maintaining the integrity and longevity of metal structures exposed to harsh environmental conditions. These facilities are equipped with the necessary infrastructure and expertise to carry out the galvanizing process efficiently and effectively.
Royal steel galvanizers provide hot dip galvanizing services to all mild steel materials taking into consideration all required standards of measurement. We are capable of receiving materials in quantities and sizes. Such extraordinary services and always-ready status is the product of the special usage of chemical compounds and treatment safe for iron & steel shape and condition. Moreover, it is crucial to mention that we use the purest form of zinc (99.995%), worldwide, meeting the International European Standards. Galvanizing is carried out according to the standards.
Royal steel galvanizers from day one have been keen to ensure that quality is the main value and a core goal. Achieving this through using the best raw materials and the latest modern machines in the process. Excellent quality is a strong competitive advantage, in which Royal steel galvanizer excels.
Performance Tests for Galvanizing carried out is our lab | |||
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I.S. 2629 | Knife Test (Sharp Edge) | No Sca ....... and no peel off.......... |
O.K. |
I.S. 3203 | Thickness Test (Magnetic Gauge Test by Elcometer ) |
Zinc Coating thickness found 95-135 micron | O.K. |
I.S.2629 | Hammer Test wt. of Hammer = 215 gms |
Does not peel off | O.K. |
I.S. 2633 | Preece Test (Copper sulphate test for coating unifomeity ) CuS04 5H2O Solutions | NO copper Deposited |
O.K. |
ASTM A-123 |
Hydrogen Evolution Test for purity of Zinc coating wt. | As per results | O.K. |
I.S.6745 & I.S. 4759 |
Stripping Test 15% HCL Solution |
As per results | O.K. |