What is the manufacturing process of TMT steel rebars?

 Using Thermo Mechanical Treatment, high-strength reinforcement steel bars are produced, which is commonly known as TMT Steel Rebars. These bars are widely used in the construction industry as they possess several qualities other than strength. TMT bars are in great demand in the construction world due to their unique metallurgical process that combines work hardening along with heat treatment to create robust and high strength bars from low-carbon steel. They are economically viable when compared to conventional steel bars.

Thermo Mechanically Treated Steel bars are mostly used in concrete reinforcement structures, residential buildings, high-rise commercial buildings, flyovers, dams, bridges, thermal plants, industrial structures, and hydel power plants.  They are capable of withstanding heavy loads compared to normal steel and are especially known for their high tensile strength and ductility.

The manufacturing process of TMT steel rebars includes 5 steps:

1.  Extraction of iron from its ore: Iron ore plays an important role in manufacturing the TMT bar. Under this process, raw materials such as iron ore, coke, limestone, etc. are kept in a molten state. When it is the molten stage, all these materials are treated on hot gases. The molten iron is then poured into a casting machine to be shaped into the desired shape.

2. Heating, Rolling, and formation of reinforced bar: The steel billets are heated from 1200°C [2192 F] to 1250°C [2282 F] and are passed through a rolling mill to give shape. In the rolling mill stand, it is heated and rolled rapidly.

3. Quenching: It forms the most crucial stage in the TMT bars manufacturing process. After the milling stand, the bars are quenched by a special water spray system. This is performed to harden the outer surface of the steel. This process benefits to increase the tensile strength, size of shrinks, and durability.

4. Self-Tempering: Once the rebar is out of the quenching box, the core remains hot compared to the surface. The heat flows from the core and gets transferred to the outer surface of the bar. This causes the desired tempering of the outer martensitic layer into a structure called ‘tempered martensitic’. It makes the bars highly ductile.

5. Atmospheric Cooling: This is the final step in the TMT manufacturing process. It involves laying down the bar on a cooling bed at normal temperature. When the bars are cooled down, the final structure will have a strong outer layer with a ductile core.

Gulf Steel is ranked as one of the most reputed Steel Manufacturer in UAE.  They are one of the best producers of construction steel and are a CARE-approved steel company in UAE. If you have any requirements for good quality Thermo Mechanically Treated Steel bars, contact Gulf Steel.

Functions of Rebar in Construction World

 Rebars (also known as Reinforcement Steel Bars) are used extensively in the construction industry for residential and commercial projects, bridges, and several other projects like dams, canals, highways, etc. Rebar is used to improve the tensile strength of the concrete since concrete is very weak in tension and strong in compression. Considering this, the construction sector has implemented the use of rebars to strengthen concrete such as beams and slabs, and this supplements strength of concrete in columns and walls. Rebar makes concrete several times more resistant to failure.

Concrete is sufficiently strong to compression forces by nature, but tension forces can crack it. Rebars are used to help concrete withstand tension forces as it significantly increases the strength of the structure. Rebar is a regular steel bar that is hot rolled and is used as a part of the construction business, particularly for concrete support. Its surface is often deformed to promote a better bond with the concrete. There are different kinds of rebars like carbon steel rebar, glass- fiber reinforced rebar (GFRP), stainless steel rebar, etc.  It is much better for gaining strength and safer in the construction industry.

The combination of steel and concrete helps to create a building material that is far stronger and more flexible than either would be alone. Rebar comes in a wide range of sizes, most commonly from 6mm up to nearly 60mm. When you have larger structures, the thicker types are used as they can support heavier loads. The functions of rebar are:

• It has ribs that bind it mechanically to solid for better holding of the structure.

• The common rebar is made of incomplete tempered steel which makes it helpless to rusting.

• Polymer rebar is used in a highly corrosive environment.

• Rebar is usually combined with other steel products and reformed to gain extra strength.

• Coastal regions use galvanized rebar to prolong the life of rebar. Reinforcement Steel Bars are also used in regions where the earth is destructive to give no consumption toughness to the development.

Gulf Steel is ranked as one of the most reputed reinforcement steel bar supplier in abu dhabi.  They are a leading steel supplier in the UAE that supplies steel products as per industry specifications and dimensions, all of which are customized as per the client’s requirement.