The very precise Eagle TMT process will start after finished stand of rolled bar. Finishing
temperature bar exceed through Eagle TMT process and this treatment results in a harden
periphery, further cooling of the bars in atmosphere. Eagle TMT exchange occurs between
the core and cooled outside martensite surface whereby the resultant bar structure is a
different Tempered martensite at periphery and a fine-grained ferrite-pearlite structure in the
central zone. Water pressure & Length of Quenching system to be chosen on bar finishing
temperature, bar size & bar speed.
The Eagle TMT bar produced as above have unique qualities of desired high strength and
toughness combined with excellent ductility with bars having elongation values of 15 to 25%.
STEP BY STEP PRODUCTION PROCEDURE
MELTING
At this stage the direct reduced iron (D.R.I.) is melted in a furnace and there after refined to produce Steel Ingots/ billets of desired chemical composition to ensure the quality and purity of Steel Ingots/ billets.
REHEATING AND ROLLING
The Billets are then heated in a micro processor based PLC controlled hearth furnace and is rolled through a series of mill stands which progressively reduce the billets to the final size and shape of reinforcing bars.
QUENCHING
As soon as the bar leaves the final mill stand, it is rapidly and vigorously cooled from 1250°C to the optimal temperature. It is done in a completely automated quenching box made with T & Q technology from GERMAN, where the product undergoes a uniform surface hardening treatment to form a hardcore martensitic layer, which provides the steel it strength along with adhesive layering.
SELF-TEMPERING
The rebar leaves the quenching box with the temperature gradient through its cross section, the temperature of core being higher than that of the surface. This allows heat to flow from core to the surface, resulting in tempering of surface, giving a structure called Tempered Martensite, which is strong and tough. The core is still austenitic at this stage.
ATMOSPHERIC COOLING
The last stage takes place while the product lies on the cooling bed where the bar is subjected to normal air-cooling reduced to ambient temperature. The austenitic core is then transformed to a ductile ferrite- pearlite core. Thus, the final structure consists of a combination of strong outer layer of tempered Martensite and a ductile core of ferrite-pearlite.
Final testing & Inspection
We do needful inspection and laboratory testing of the products.
Dispatch
After the inspection of products ,we dispatch according to customers requirements.
