0
This answers is for coiled steel strips. Steel strips, after rolling in coil form, are sent to a "Galvanizing Line". The most common and economically viable is "Continuous Hot Dip Galvanizing Line". The steel, after rolling is "Annealed" at required temperature to relieve stresses developed after rolling. After annealing the strip is passed through a "Galvanizing Pot" containing molten zinc. The thickness of coating generally varies from 30 - 300 gm/cm2. The coating thickness is controlled by "Air knives" using air or nitrogen blowers. The coated strip is then "Passivated" using either Chromating liquid or Non-toxic passsivating compounds. For good surface quality, the strip is often skin passed in a rolling mill stand and then tension levelled in a levelling unit after zinc coating. Another process, which is superior to this process is Electro-Galvanizing using an electrolytic process.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What type of metal is wire made from?
Galvanized steel has gone through a chemical process to keep it from corroding. The steelgets coated in layers of zinc because rust won't attack this protective metal. For countless outdoor, marine, or industrial applications, galvanized steel is an essential fabrication component.The principal method of making steel resist corrosion is by alloying it with another metal, zinc. When steel is submerged in melted zinc, the chemical reaction permanently bonds the zinc to the steel through galvanizing. Therefore, the zinc isn't exactly a sealer, like paint, because it doesn't just coat the steel; it actually permanently becomes a part of it.The zinc goes through a reaction with the iron molecules within the steel to form galvanizedsteel. The most external layer is all zinc, but successive layers are a mixture of zinc and iron, with an interior of pure steel. These multiple layers are responsible for the amazing property of the metal to withstand corrosion-inducing circumstances, such as saltwater or moisture.Zinc also protects the steel by acting as a "sacrificial layer." If, for some reason, rust does take hold on the surface of galvanized steel, the zinc will get corroded first. This allows the zinc that is spread over the breach or scratch to prevent rust from reaching the steel.
What process goes through oxygen?
u tell me
What is crca sheet?
CRCA stands for cold rolled close anneal. Steel is hard when cold rolled so the sheet goes through an annealed process to soften it to better mold into shape.
What is the process the moon goes through to become dark?
waning
What are Changes takes place in grains of steel during rolling and annealing?
Prior to the rolling of steel, the grains of the steel are oriented in long strands of caribides in the billet form. When this billet goes through the rolling process, these strands are compressed and broken up into shorter bands. This rolling process densifies the steel and thereby work hardens the steel. These work hardened grains become too hard for any further rolling to take place and they must be annealed. The annealing process entails heating the bar or billet to about 1600 degrees F and holding for a long period of time. Through annealing, the steel grains are softened so that additional rolling can be performed. For additional information on the rolling and annealing of steel, terminology or the properties of steel, see the related link.
What does it mean when cookware is described as being dual clad?
High quality, expensive, cookware goes through a process called Dual Clad. This involves a layer of think stainless steel, copper, and aluminum also.
Describe the process wind goes through to become energy?
Okay
What is the process that ice on mount Everest goes through when being heated from 10 degrees Fahrenheit to 305 degrees kelvin?
The process that the ice on Mount Everest goes through is called sublimation. Through this process, the water changes from 10 degrees Fahrenheit to 305 degrees Kelvin.
How a liquid change into a gas?
liquid changes to gas through the process of evaporation. then when a gas changes back into a liquid it goes through the process of condensation
how eco friendly is the production?
The product is made up of steel; therefore, the amount of pollution that goes into manufacturing will be considerable. I would contend that this is not a very eco friendly production through the very process that it requires to obtain the raw materials.
What is motosis and cell division?
its a process a cell goes through to start dividing.
Will grape juice turn to wine?
Yes, if it goes through the fermentation process.
