Constructing a durable structure needs a massive amount of money, time and special care. Along with these qualities, materials are also very important to preserve their value for the long term. Plenty of buildings deteriorate too early, often because of the low-grade raw materials and tmt used during construction. Not only flooring, concrete, pipes, wiring etc. but also the steel used to build the mainframe on which a building stands.
The support of the building comes from steel and concrete. These two need to work with each other perfectly, so that they can provide basic strong support to the structure. Despite concrete being extremely strong, it derives its strength from its reinforcement with steel bars. In recent days, TMT bars are considered the best steel bars for any type of construction work. TMT bars possess higher tensile strength with proper elongation value, while concrete resists the compressive forces. Thus combination of these two supports the structure extremely and it becomes extremely strong and free of surface irregularities and deformities.
Civil engineers use TMT bars for every structural construction including power plants, dams, industrial structures, bridges, airports, residential buildings, etc.
TMT Bars are also well-known for fire and corrosion resistance. TMT Bars are specially layered with coats of copper, chromium, and phosphorus. These metals help the TMT bars withstand corrosion. These bars also possess high thermal stability. Due to which, these bars make them capable of withstanding temperatures as high as 600 degrees Celsius.
The following characteristics of the TMT make it a perfect choice for construction managers apart from being fire and corrosion resistant.
- highly resistant to earthquakes
- more resilient to any kind of load
- mixes extremely well with concrete
- easily welded due to its low carbon content
- makes it easily bendable due to its inherent microstructure
- combination of higher strength and ductility is an added advantage
- can be easily lap welded, butt-welded, and manual arc welded without any sort of pre-heating.
Top TMT bars are made from virgin iron ore, which gives the highest grade of purity to these bars. The various stages of the manufacturing process of TMT Bar include a series of processes. Rolling, water quenching, heat treatment and cooling are the various stages of the TMT bars manufacturing process. The extraordinary rolling process transmits uniform properties across the bar. The Thermo Mechanical Treatment involves three essential steps. These are:
- Quenching
- Self Tempering
- Atmospheric cooling
Quenching– In the process when the hot rolled bars enter the water spray system after releasing from the finished mill, it is known as ‘Thermex System’. Thermex Technology cools down the outer core rapidly. Rapid cooling hardens the outer core, thus it ensures the ductility of TMT Rebars. This cooling technology is known as Quenching. The best TMT bars manufacturers’ uses Thermex Technology for production of best quality TMT bars.
Self Tempering – When the rebars is out of the Thermex Quenching box, the core is still hot compared to the surface. Thus it allows heat to flow from the core to the surface. It causes Tempering of the outer Martensite layer. Thus forming a structure called the ‘Tempered Martensite’.
Atmospheric Cooling – After the self tempering the bars get ready for atmospheric cooling. The cooling is done at normal temperature. Here the austenitic core turns as a ferrite-pearlite structure. Due to this process the final structure consists of a strong outer layer with a ductile core. Thus it increases the tensile strength that makes it highly ductile and weld-able.
Best TMT bars in India are manufactured by quite a few manufacturers. We can rely on reputed steel manufacturers for our construction. Prior to buy be sure about the brand who maintains continuous quality control and provide after sales support.