Galvanizing
/ Service Details
What is Galvanizing?
Steps in the Hot-Dip Galvanizing Process with Centrifuging
>> Cleaning and Pretreatment
The steel or iron article is first cleaned to remove any dirt, oil, or other contaminants that could prevent the zinc from adhering properly. This may involve pickling in an acid solution, followed by rinsing with water.
>> Centrifuging
After being removed from the zinc bath, the article is immediately spun in a centrifuge. The centrifugal force removes excess zinc from the surface of the article, resulting in a thinner and more uniform coating.
>> Fluxing
The article is then dipped in a flux solution, which helps to remove oxides and promote the bonding of the zinc to the steel or iron.
>> Galvanizing
The article is then submerged in a molten zinc bath at a temperature of around 450°C (842°F). The zinc reacts with the iron to form a zinc-iron alloy layer on the surface of the article.
>> Quinching in water and Inspection
The article is then allowed to cool, and it is then inspected to ensure that it meets the required specifications.
Benefits of Hot-Dip Galvanizing with Centrifuging
>> Removal of excess zinc coating
Centrifuging can help get the excess zinc to be removed while centrifuging it through the centrifuging machine.
>> More uniform coating
Centrifuging can also help to produce a more uniform zinc coating. This can improve the appearance of the finished product and also provide better corrosion protection.
>> Reduced waste
Centrifuging can help reduce the amount of waste zinc that is generated during the galvanizing process. This can be beneficial for both environmental and economic reasons.
Applications of Hot-Dip Galvanizing
Hot-dip galvanizing is used in a variety of applications, including: