Manufacturing
 

Ambe TMT rebars are "hot-rolled" from mild steel billet and on line thermo-machanical treatment of three successive stages:

1. Quenching: The hot rolled bar that leaves the  final mill stand is rapidly quenched by a special water spray system. This hardens the surface of the bar to a depth optimized for each section through the formation of martensitic rim. The core remains hot and austenitic.




2. Self Tampering:
When the bar leaves the quenching box, the core remains hot compared to the surface. The care allows heat to flow to the surface tempering the outer martensitic layer into a structure called Tempered Martensite. The core still remains austenitic at this stage.




3. Atmospheric Cooling:
This takes place on the cooling bed where the austenitic core is transformed into a ductile ferrite pearlite structure.  The final structure consists of an optimum combination of a strong outer layer (Tempered Martensite) with ductile core (ferrite-pearlite). This gives Ambe TMT its unique combination of strength and ductility.




 
 
 
 
  Uniform Size & Weight
 
 
 
 
 

Ambe Complex, 6th Floor, Teku, Kathmandu, Nepal

977-1-4258128, 4258129,4255551
Fax 977-1-1-4226728

Website: www.ambesteels.com
Email: info@ambesteels.com