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Main Differences of Hot Rolled and Cold Rolled Steel Structures

When approaching a steel fabrication company, it is vital to be aware of the form of material that suits a specific application. Different forms of manufacturing can create steel that offers better performance for certain applications than others. Cold rolling and hot rolling are two methods of steel fabrication with a great impact on the material performance on the whole. Knowing the distinctions between both methods can aid your business in reducing time, cost of raw materials, and further processing. Here, we will differentiate both as a company that handles cold rolled and hot rolled steel fabrication UAE works.

Hot Rolling

It is a process where steel is rolled at usually above 1000°C or the recrystallization temperature of the material. Heating steel beyond the recrystallization temperature will make it malleable to a greater extent, thus allowing fabricators to properly form and shape the material. It will also allow a steel fabricator in UAE to produce bigger quantities of the material than usual. After the heating process, the steel will be cooled at a comfortable ambient temperature, thus normalizing it as well as removing the concern of stresses in this material that arise during work-hardening or quenching.

After it cools off, the material will get smaller in a non-uniform way, which will lessen control over the shape and size of a hot-rolled end product. The steel rolled into a shape thus will appear scaly in terms of its surface finish. As for situations where its appearance is an issue, it is possible for a structural steel fabricator in UAE to have the scales removed through grinding, sand-blasting or pickling. The said properties make the steel most ideal for applications that include structural elements and others where very precise tolerances and shapes are less important.

Cold Rolling

Unlike hot rolling, in this process, steel is rolled with a temperature that comes under its recrystallisation temperature. Here, the sheer pressure of an industrial roller is used to press the steel at the aforesaid ambient temperature.

The cold-rolled material becomes 20% stronger than its hot-rolled counterpart as the manufacturer uses the strain hardening method. It is a sequence of steps, from breakdown to finishing, that allows creating cold-rolled shapes of steel.

Cold rolling enables creating precise shapes, and since it is done at the aforesaid temperature, the material will not become smaller when cooling, unlike in the other process.

If your business prioritizes the visual appeal and overall aesthetics of steel in its project, then remember that the material rolled thus would have a desirable exterior finish. Nevertheless, the steel has a set of applications that is limited to some shapes, including flat, round, and square.

Which One To Choose?

When selecting the best form of steel for your business project, understand all the distinctions between cold rolled and hot rolled varieties. As a general rule, the latter variety may be your best option in the event of requiring big structural components. If your business requirement is smaller components with more precision and durability, then the former steel manufacturing process may be right for the project. For more help with choosing the right one, do not hesitate to contact a cold and hot rolled steel fabrication UAE company.

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