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Manufacturing Process of Steel TMT Bars

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Melting and refining

Melting & Refining

The Melting and Refining process for Shree TMT involves several steps that effectively transform raw materials into exceptionally robust and high-quality TMT steel bars, which serve as the fundamental building blocks for constructing solid infrastructures.

  • Raw Material Selection: To assure the production of outstanding TMT steel bars, Shree TMT selects high-quality raw materials.
  • Induction Furnace: The raw materials are charged into in-house induction furnaces. Once the raw material has been melted, the molten metal is separated from the slag.
  • Purging and Refining: The molten metal is purged within the ladle furnace before various refining chemicals are introduced to remove any leftover impurities.
Continuous casting

Continuous Casting

Continuous casting is an integral part of the TMT bar manufacturing process. We utilize the continuous casting process to solidify a molten metal mix by casting a predetermined length of metal. New molten metal is continuously and precisely fed to the mold.

Our state-of-the-art continuous casting machine revolutionizes the steel production process by enhancing yield, cost-effectiveness, productivity, and overall quality.

Secondary cooling and hot charging

Secondary Cooling & Hot Charging

After exiting the continuous casting process, the solidifying billets enter a secondary cooling chamber. Semi-finished billets are sprayed with water to achieve complete solidification.

The solidified metal strands are directly hot charged into the rolling mill while retaining optimal temperature for recrystallization, improving quality and minimizing material loss.

Rolling mill

Rolling Mill

The recrystallized metal billets are transported to a cutting-edge rolling mill using conveyors.

They are treated using the internationally recognized roll pass design, which results in increased strength and elongation. TMT bars rolled from billets are far superior to bars made from ingots.

Quenching and self-tempering

Quenching & Self-tempering

After the steel rebars leave the finishing mill, they enter a water-cooling chamber where they are quenched using German quenching and self-tempering technology.

  • Steel rebars are rapidly cooled immediately after leaving the last mill stand.
  • The surface layer is tempered using the residual heat remaining in the core.
  • Steel bars are placed on a cooling bed and subjected to rapid air cooling.
Have any questions?

FAQs

What is the manufacturing process of Shree TMT bars?

Shree TMT bars are manufactured through a multi-stage process that includes melting and refining raw materials, casting billets, hot rolling, thermo-mechanical treatment (TMT), cooling, and final quality testing to ensure high strength and durability.

What is Thermo-Mechanical Treatment (TMT) in steel manufacturing?

Thermo-Mechanical Treatment (TMT) is a process where hot-rolled steel bars are rapidly quenched and then self-tempered to create a strong outer layer and a flexible inner core. This combination enhances strength, ductility, and earthquake resistance.

How does Shree TMT ensure high-quality steel production?

Shree TMT uses advanced manufacturing technologies such as automated furnaces, continuous casting machines, and controlled rolling processes, along with strict quality checks at every stage to maintain consistent product standards.

What tests are performed on Shree TMT bars during manufacturing?

Shree TMT bars undergo multiple quality tests including tensile strength testing, bend and rebend tests, chemical composition analysis, and dimensional checks to ensure safety and performance before dispatch.

Why is the manufacturing process important for TMT bar quality?

A well-controlled manufacturing process ensures better strength, flexibility, corrosion resistance, and long-term durability. It directly impacts the safety and lifespan of construction projects, especially in demanding conditions like seismic or coastal areas.

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