AUTOMATED COOLING BED

TMT bars that comes out after the Quenching Process will be of 2500C. These bars are cut into desired sizes and then passed through Automated High-Speed Cooling Bed. This stage involves normal cooling to room temperature where the ‘Austenitic’ core is transformed to a ductile ferrite + pearlite structure. This finished bar has a microstructure comprising of a tough outer layer of tempered ‘Martensite’ and a ductile core of ‘ferrite + pearlite’. This composite structure gives excellent yield strength to the bar along with superior ductility and weldability. The mechanism of automated cooling bed assures that the bars are uniformly positioned over the toothed racks. The advanced technology helps prevent the damages caused by the collision of TMT bars and thereby gives a unique uniform strength and shape. But in Manually operated rolling mills, labours do this with a hook. The increased strength and toughness of TMT bars create problem during subsequent manual bending operation. It will affect the shape and strength of the TMT bars.