Designing Buildings - User contributions [en]

GALVANIZED STEEL FABRICATION

2022-03-04T09:10:23Z

Metaline: Created page with "General Information The galvanized steel is available in different designations that include high strength low-alloy, commercial quality and structural grades. There are various..."

General Information

The galvanized steel is available in different designations that include high strength low-alloy, commercial quality and structural grades. There are various applications in which galvanized products are used in and the main reason is to prevent decay in various applications when then material is exposed to the external elements all year round. The galvanized coating prevents steel oxidation and thus increases the longevity of the parts and reduces costs for replacement parts. Bigger components for metal fabrication which require welding, forming and different other procedures can be hot dip galvanized after completion for achieving maximum corrosion resistance.

Galvanized Steel Fabrication

Metaline offers a comprehensive range of galvanized sheets to domestic as well as international markets with thickness ranging from G60 to G90. Galvanized sheets are available in a variety of width, length and thickness and different dimension that fit the requirements of the customers. We offer these at most cost effective prices for our valued customers. Our esteemed company ensures quality standards for manufacturing of these sheets and coils. 

Service Area Coverage

Metaline shop is located in Toronto, at the heart of Canada’s largest business cluster, and minutes drive from YYZ – busiest Canadian airport. We serve customers from all industries in Ontario and across Canada. We also deliver orders and projects in the USA – we are easy to reach within less than 2 hours drive from New York state border. 

Why Choose Us

Our professionals are well experienced and trained to handle the metal fabrication jobs. Our shop operates modern machinery, we able to fabricate wide range of metals and alloys and employ latest available technologies. Customer satisfaction and production of flawless products is our prime goal and our engineers and professionals strive to achieve the same. 
 
[https://metaline.ca/metal-fabrication/galvanized-steel/ https://metaline.ca/metal-fabrication/galvanized-steel/]

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Talk:Aluminium

2022-03-03T11:25:16Z

Metaline: Created page with "check out some fabrication properties of aluminum here: https://metaline.ca/metal-fabrication/aluminum-fabrication "

check out some fabrication properties of aluminum here: https://metaline.ca/metal-fabrication/aluminum-fabrication

Galvanised steel

2022-03-03T11:22:06Z

Metaline:

[[File:Galvanisedsteel.jpg|link=File:Galvanisedsteel.jpg]]

= Introduction =

Galvanisation can be used to help prevent steel from corroding. This involves coating steel in zinc. The coating of zinc prevents corrosive substances from reaching the base metal. The zinc also acts as a sacrificial anode, meaning that if the coating is scratched, the remaining zinc will still protect the exposed steel.

The most common method of galvanising steel is hot-dip galvanisation, which involves submerging the steel in a bath of molten zinc.

This form of protection may be insufficient for components exposed to acids such as acid rain, or in a salt environment, such as coastal locations, and for these applications, stainless steel is preferable.

See Stainless steel v galvanised steel for more information. 
 
The [https://metaline.ca/metal-fabrication/galvanized-steel/ galvanized steel] is available in different designations that include high strength low-alloy, commercial quality and structural grades.

= Process of galvanisation =

The typical process of galvanisation is described below.

=== Degreasing ===

To begin, the steel must be treated and cleaned to remove any scale, rust, oil, paint or other surface contaminants.

=== Fluxing ===

The steel is then immersed in a flux solution. This is usually 30% zinc ammonium chloride with wetting agents, maintained at above 65°C. This helps to prevent further oxidation before the galvanising begins. The steel is then dried.

=== Galvanising ===

The steel is completely immersed in a bath of molten zinc. A uniform coating is produced by the zinc reacting with the steel to form a series of zinc-iron alloy layers. The mass of the steel component being protected will determine the thickness of the layers.

The component is removed from the bath after a period of immersion which varies according to the size and mass. The steel will carry with it an outer layer of molten zinc which solidifies upon cooling to form the outer coating.

Small components such as fasteners can be galvanised by a similar process. They are loaded into perforated cylindrical steel baskets and lowered into the bath. Upon removal, they are rotated at high speeds for 15-20 seconds in a centrifuge which throws off excess zinc and maintains the integrity of the components.

For more, see Galvanising.

= Advantages of galvanised steel =

There are several advantages to using galvanised steel:

* It can be more cost-effective than other protective coatings for steel.
* It has good durability and requires little maintenance.
* It has a life expectancy of more than 50 years in rural environments, and 20-25 years in more extreme urban and coastal environments.
* By fully immersing the component in zinc every part is protected, including recesses, sharp corners and inaccessible areas.
* Galvanised coatings are easily assessed by the eye.

= Disadvantages of galvanised steel =

Some components may be too large or too small (e.g. small screws and bolts) to be hot-dipped.

The zinc will eventually be corroded; the rate being largely dependent on the thickness of the coating and the environment to which it is exposed.

There is also the risk that the outer zinc layer can scratched, or can peel away if components are cooled too slowly. A very thick coat of zinc can also become brittle and flake off.

= Related articles on Designing Buildings =

* Aluminium.
* Cast iron.
* Concrete-steel composite structures.
* Concrete vs. steel.
* Galvanising.
* Major cast metal components.
* Metal fabrication.
* Metal roofing.
* Rust.
* Spangle.
* Stainless steel.
* Stainless steel vs. galvanised steel.
* Structural steelwork.
* Super-strength steel structures.
* Types of metal.
* Types of steel.
* Weathering steel.

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