EoW September 2009

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EuroWire – September 2009 31
technology news
Welding flexibility for grating panels
A new model in the GRG series has
recently entered the CEMSA resistance
welding machine family. GRG-JR-1000
is a line for the production of heavy
grating panels, welding longitudinal
steel bearing bars of 6,000mm length,
with steel cross wires of 4mm to 6mm
diameter and 1,000mm length.
The welding process is automatic;
loading of the longitudinal bars and
cross wires and wire cropping is manual.
The machine is available in several
versions to suit working speed, power
availability from the factory network
and the required results.
The installed power is therefore linked
to the working solutions, ranging from
300KW, in case of electrical cascade,
up to 1,500KW in case of one-stroke
welding (one wire at a time).
With the solution in electrical cascade,
a multi-head scheme can achieve
productivity of 5-6 seconds for a cross
wire of 1,000mm length and 5mm
diameter (included one-step indexing).
The CN towing system allows choosing
the distances of the cross wires whilst for
different pitch of the longitudinal bars,
changing the tooling (if not multiple)
is necessary.
This system is chiefly targeted at
medium and small companies, but big
companies can also benefit from the
flexible system of production.
CEMSA SpA – Italy
Fax: +39 02 253 3307
Email:
Website :
Tenova Strip Processing has received
the acceptance certificate for the new
magnesium coating line installed at the
ArcelorMittal Valcovny Plechu plant in
Frydek-Mistek (Czech Republic).
The Tenova contract covered the
engineering, equipment, erection super-
vision and commissioning of a complete
cleaning and MgO coating line with strip
thickness 0, 18-0, 35mm and widths of
up to 1,050mm.
The new line is part of an advanced
production process for grain-oriented
silicon steel, a material mainly used in
the electric transformers industry.
Tenova Group – Italy
Website :
New silicon steel line
CEMSA’s GRG-JR-1000 welding machine ▲ ▲