Rebars pass through a specially-designed, fullyautomatic, and computerized quenching box. Water is sprayed on the rebar surface to maintain a colder exterior temperature while maintaining a hot interior temperature.
Ausienite
Martensite
Rebars are removed from the quenching box and left until the surface hardens, creating an outer layer of tempered martensite.
Tempered Martensite
Thermo Mechanically-Treated technology is used to manufacture high tensile strength rebars through heating and cooling stages that create a combination of micro-structural features in the cross section of the rebars. All rebars are 'hot rolled' before entering these 3 stages:
Rebars enter the cooling beds. In this final stage, the austenitic core turns into ferrite-pearlite or ductile. The combination of a tempered martensite surface and ferrite-pearlite core provides a considerably higher strength and ductility to the finished material, making it ideal for building strong structures.
Ferrite Perlite
