Under thermo mechanical treatment by Thermex German Technology Cooling System, the steel bars are made to pass through a specially designed water cooling system where they are kept for a specific period of time.
• The outer surface of the bars thus becomes colder while
the core remains hot, creating a temperature gradient in the bars.
• When the bars are taken out of the cooling system, the
heat flows from the core to the outer surface causing further tempering, which helps in attaining a higher yield strength of steel.
• The atmospheric cooling, wherein the bar is cooled on
the cooling bed, results in the austenitic core being
converted into ductile ferrite pearlite core. This makes
RAJARAM Thermex TMT a blend of strength and ductility.