PATHWAY TO PERFECTION

Process route of Blast Furnace - LD Steel making - Ladle Refining - Continous Casting of billets ensures the right and desired quality with minimum tramp elements and sulphur and phosphorus content of 0.005 - 0.035%. Cast billets are hot rolled in state-of-the-art MORGAN and DANIELI rolling mill, which ensures uniform dimensions and properties in each bar. Surface finish of each bar is excellent as the mill employs tungsten carbide rolls against conventional rolls.

Each bar is thermomechanically treated. After leaving the last stand of the rolling mill, the bars are quenched (rapid cooling) in water from final rolling temperature of about 1050'C. The quenching is partial, only until outer surface layer has been transformed from austenite to martensite. Because of partial quenching, a part of the original heat remains in the core of the steel and on the cooling bed, this migrates towards the surface and results in an automatic self tempering process where the surface layer of martensite is tempered. The resulting tempered-martensite shows improved deformability as compared to quenched martensite. On atmospheric cooling on cooling bed, austenitic care is transformed into ductile ferrite-pearlite. The core of the heat treated bars consists of ferrite and pearlite while strong outer layer consists of martensite.

REHEATING FURNACE

• Walking Beam Furnace with digitally controlled combustion system
• Uniform heating of Billets gives uniform control on decarburization level in finished products with less scale loss (≤0.5%)

ROUGHING AND INTERMEDIATE MILL

• Input Billet Size of 165 x 165 mm
• Patented Oval - Round Pass sequence enables higher reduction ratio resulting in better internal soundness & superior quality steel
• Two-way online slitter ensures high productivity for smaller sizes

VEE NO TWIST MILL

• Two sets of six stand No Twist Mill [NTM) enables controlled temperature rolling to produce superior grain structure