TMT Technologies


Quenching Stage

The first stage consists of drastic water-cooling treatment to the bars as they leave the last finished stands. The efficiency to the water cooler equipment used at this stage has to be as high as to produce a very hard cooling.

Tempering Stage

In the second stage of the bar leaves the water quenching line and is exposed to air. The heat flux forms the still hot core reheats the quenched by the conduction and the mar-tensile formed in the first stage is thus, subjected to self-tempering giving structure called "Tempered Mar- tensile" which is strong and tough. The Core is still authentic at the stage.

Cooling Stage

The Third stage of "Atmospheric Cooling" occurs on the cooling bed, where the austenitic core is transformed to a ductile ferrite pearlite core. Thus, the final structure consists of the combination of strong outer layer of tempered martensite and a ductile core of ferrite-pearlite.

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