EoW January 2010

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EuroWire – January 2010 53
Cleaning & descaling
“ ACID-FREE PROCESS 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:
WIRE 2010
Stand 10 E72
Inline rod cleaning
The Lämneå inline rod cleaning system continuously performs in-line reverse bending
of wire rod from 5mm to 15mm diameter. The system consists of a 4 or 6-sheave scale
breaker, DU series, in combination with a BM 8, 4-pair brushing unit.
In operation the rod is bent in four planes and pulled through the scale breaker. About
80 to 90 per cent of scale removed from the wire falls into a collection box beneath
the scale breaker. The remaining 10 to 20 per cent is loose, but clings to the rod due to
electrostatic charge; this undesirable scale residue is removed by the brushing machine.
The wire passes through four brush sections, each section containing two brushes. Each
pair of brushes is oriented 45º to each other in order to cover the entire wire surface.
An integrated system for automatically adjusting the brushes has been implemented
into the BM 8. This monitors and ensures that the preset pressure is maintained
throughout the brush lifetime.
Under normal circumstances the brushes last for at least 120 tons of operation.
Lämneå Bruk AB – Sweden Fax: +46 122 232 99
Email: Website:
Mechanical descaling system DU4 ▲ ▲
Descaling and cleaning combinations
Electrorrec’s mechanical descaling machine DECL cleans rod using a combined bending
and polishing system. The modular design of the descaling machine offers a wide range
of configurations to suit customer requirements. When heavy-duty cleaning is required,
the heavy descaling unit DECL-G can be combined with the fine descaling unit, DECL-F,
and a polishing unit, UP. Arranging the heavy descaling unit with a polishing unit can
solve many applications, with a significant reduction in investment. There are three
descaling models (DECL-16, DECL-20 and DECL-28) and two polishing units (UP-1 and
UP-2).
The heavy descaling unit is a fabricated frame housing a double set of bending rollers
in two planes 90° (model DECL-28 has only one set of bending rollers) with central,
hydraulically driven, rollers. The bending rollers are equipped with tungsten carbide
central rings. The fine descaling unit consists of two sets of wire brushes also allocated
in two planes 90°. An independent pneumatic cylinder, which allows a permanent
contact between the wire brushes and the wire rod surface independently of brush
wear, tilt each set. The brushes’ motors are placed outside, to avoid problems with scale
powder.
The polishing units can be equipped with metallic wire brushes or abrasive wheels,
depending on final product specifications.
Electrorrec SA – Spain Fax: +34 836 820 383
Email: Website :