EoW March 2010

technology news

Flexibility for grating panels

A new model of 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 different versions depending upon the working speed, power availability from the factory network and the aesthetic results that customers require. The installed power is therefore linked to the working solution ranging from 300kW, in case of electrical cascade, up to 1,500kW in the case of one-stroke welding (one wire at a time). With the solution in electrical cascade, a multi-head scheme is used to achieve a 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 such a flexible system of production.

CEMSA’s GRG-JR-1000 welding machine ▲ ▲

CEMSA SpA – Italy Fax : +39 02 253 3307 Email : info@cemsa.it Website : www.cemsa.it

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EuroWire – March 2010