Special Steels - Gerdau

Processes
STEELPLANT
Production process from liquid steel starting from the melting of
scrap and alloys. Once molten, the steel solidifies in the form of
billets blooms or ingots.
HOT ROLLING
A thermo mechanical process by which the billets and/or blooms
are transformed into steel bars, round, square, flat or coils.
FORGE
Process of transforming ingots into round or square bars.
BASAURI REINOSA
EAF 130 t EAF 70 t
VD/VOD LF VAD
Billets
155-185 mm
Bloom
300 x 400 mm
Size Range
Rolled Bar
Wire Rod
min max
20 to 230
65 to 230
6 a 60 x 50 a 130
min max
5,5 to 37
Forged Bar
min max
220 to 1.500
From 4 to 46 tonnes
Ingot
BASAURI
VITORIA
AZKOITIA
REINOSA
COLD FINISHING
Mechanical processes that provide the superficial
finish,dimensional tolerances and mechanical properties
according to customer specifications.
HEAT TREATMENTS
Transformation processes to modify the mechanical and
metallurgical properties of rolled and/or forged products,
through the control of heating and cooling.
INSPECTION LINES
Set of equipment used to inspect the products and guarantee
their quality.
Reheating
furnace
Forged bars
Billet and round rolled bars
Coils
Peeled bars
Drawn bars
Ground bars
Rolling mill
(coils and bars)
Forging Press
Finished products
Bright Bar
min max
Drawn
Turned
Ground
Ingots
5 to 35
18 to 212
6,5 to 88
Up to 140 Tonnes
Continuous Casting
Billet: 185x185 mm, 155x155 mm
Bloom: 300x400 mm
Heat treatment
furnace
Solution annealed
Quenched and tempered
Globular annealed
11
Finishing and
control process