EOW May 2007

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EuroWire – May 2007 20
english corporate news
Wuhan Iron & Steel in Wuhan, China, has successfully produced the first coil on the
continuous annealing line supplied by SMS Demag AG, Germany.
The line at Wuhan is designed for the production of strip in widths of 900 to 2,080mm
and in gauges of 0.3 to 2.5mm. An annual production of 990,000 tons is generated with
a maximum process speed of 450m/min.
The steel stripes in the grades ULC (IF), HSS, BH, DP, PMK and TRIP with low
carbon content are mainly used in the automotive industry for the manufacture of
domestic appliances.
The SMS Demag supply scope comprises not only the mechanical and process-
engineering equipment but also the Drever vertical furnace with modern annealing
and cooling technology. The essential process stages include strip degreasing,
recrystallisation annealing with controlled strip cooling, and skin passing to obtain
differing degrees of surface roughness and controlled elongation.
The trimming shear cuts the strip to the required final width and the strip surface is
oiled electrostatically. The inline six-high skin-pass mill stand is equipped with hydraulic
adjustment, work-roll and intermediate-roll bending, and intermediate-roll axial shifting
with CVC plus® technology.
High quality grades can be achieved for the products and, in conjunction with the
flatness measurement system, WISCO obtains very good results as regards strip flatness
and surface quality with these facilities.
The fully automated work-roll and intermediate-roll changing device allows very quick
roll changing to be performed without interrupting continuous operation in the process
section of the plant.
An inspection loop accumulator makes it possible to bring the exit section to a
complete halt to allow visual inspection of the strip surface without needing to stop the
mill stand.
The special technology of the trimming shear with its rotating shear housings enables
the knives to be changed while the strip is running. The DUMA oiling machine is able to
apply two different types of oil.
SMS Demag AG – Germany Fax: +49 211 881 4386
Email: Website:
lFirst coil at China plant
“ ACID-FREEPROCESS FOR STEEL
ROD CLEANING & SURFACE
PREPARATION”
“New Way to Draw Steel Wire
in the 21st Century”
DCCD process features:
• Eliminates acid, borax and precoatings
• Zero energy consumption
• Direct drawing from bare rod with no
speed limitation, for H/C and L/C
• New Lubricant Viscosity Control
provides exceptionally adherent coating
• Adjustable lubricant residual
• Zero lubricant waste
• Recommended for severe drawing
applications (spring, rope, bead,
CO2 welding, PC strand, plating quality)
• H/C wire drawn at 18 m/s (3600 ft/min)
• Up to 8 times longer die life
• Exiting wire temp. 45°C (113°F)
• Greatly improved wire ductility
DECALUB
31, avenue de Condé
77500 CHELLES, FRANCE
Fax: +33 1 60 20 20 21
E-mail:
Website:
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