Metaroll - The Power of Steel

Advance Technology – Ladle Refining Furnace

Maharashtra’s First & Only Company to adopt LRF – Providing the Pure Quality of steel”

Why LRF?

High quality of raw material is melted in induction furnace which also has a few gases. In order that all these gases completely escape and impurities are totally removed, molten liquid is transferred into Ladle Refining furnace where additional heat is provided.
A Ladle Refining Furnace is used to raise the temperature and adjust the chemical composition of molten metal.
With the help of LRF, two crucial elements like Sulphur & Phosphorus can be controlled in exact proportions to produce a better quality of steel.
Additionally, LRF treatment helps float inclusions in steel and removes dissolved gases.
Induction furnace + LRF lend high quality TMT bars, specially of 500D grade needed for large scale infrastructure projects.

Hot Billets immediately after casting are easy to roll and rough. This enhances ductility, malleability of steel to a great extent.
TMT bars manufactured using Billets have properly balanced chemical composition.
Roughing & rolling can be done in hot condition which results in retaining mechanical properties of steel.

QUENCHING & SELF TEMPERING (QST)

The process ensures that water passes over the entire surface of TMT bars, and to cause martensite (outer surface) to be hard for strength & Pearlite (inner surface) to be soft due to inner heat.
After quenching, the bars are placed on the cooling bed so as to reach room temperature where its inner heat escapes and stress releases. This enhances ductility of steel to a great extent.
Self-tempering of bar is done on automatic rack type cooling bed to achieve high ductility & stress ratio.