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Special Profiles & Cross Section

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Significance & applications

Chemical reduction of the iron ore mineral with the help of an integrated steel manufacturing process results in the production of the steel metal. It may also be produced through a direct reduction process. It involves the process of converting the iron ore from the blast furnace to steel in an oxygen furnace that is basic in nature also known as a Basic Oxygen Furnace (BOF). This process results in mixing iron with carbon at extremely high temperatures. The temperature for this manufacturing process may vary but the average temperatures range anywhere north of 2600 degrees Fahrenheit.

The steel manufactured is then subjected to processes that provide special profiling with varying cross-sections. These can be constructed according to the specifications of use. The profiles are available in various shapes and sizes such as rectangles and squares along with round or tapered corners, different cross-sections of triangles, trapezoids and rhombus orientation, half rounds and hexagons with rounded corners, oval-shaped profiles, a five-sided pentagon and many more.

Process

Steel profiling with the desirable cross-sections comprises the following four processes:

Process

Cold Drawing

The material drawn in the cold drawing process is at room temperature. This improves the size, section and surface finish of the component and reduces machining losses.

Process

Hot Extrusion

Special steel profiles having a constant longitudinal cross-section can be formed through the production process of hot extrusion. The force that acts in the metal forming process is called the compression force. Profiled hollow material bars that have a fixed cross-section and complex geometries can be made in a single step through this process.

Process

Cold Rolling

The process of cold rolling is defined as an approach that involves a metal sheet or strip passing through two rollers and compressed or squeezed in between them. The amount of pressure applied by the rollers will determine the tensile properties and hardness of the finished material.

Process

Hot Rolling

This process involves plastically deforming the metal by heating it above the recrystallization temperature before the rolling or working operation. Various shapes may be created with the desired material properties and geometrical dimensions keeping a constant volume of the metal used.