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Coperion will present its new Cobra LG wear diagnosis system at K 2010, which is scheduled to run from 27 October until 3 November in Dusseldorf.

With the new system, it is possible to obtain rapid, relevant information on the actual state of wear of the inner walls of the barrels of extruding and compounding systems in the size range from ZSK 240 to ZSK 380.

The system comprises a high-resolution video camera and a laser-guided surface measuring device, both of which are mounted on a carriage that travels along the inside of the extruder barrel.

All that is necessary in order to use the Cobra LG is to remove the screw shaft assembly from the extruder barrels.

Dismantling of the extruder barrels is not necessary.

The wear diagnosis is best performed – from a cost- and time-saving aspect – during one of Coperion’s routine servicing programmes.

During K 2010, on Stand B33 in Hall 14, Coperion will show the Cobra LG wear diagnosis system in the extruder barrel of a ZSK 380.

For smaller compounding systems – models ZSK 40 to 133 – Coperion’s GBM barrel bore measurement system is claimed to be a suitable means of diagnosing barrel wear.

The new Cobra LG wear diagnosis system determines the state of barrel wear in two stages: the high-resolution video camera first films the inner walls of the barrel, thus permitting a thorough optical analysis of their state of wear; and then either the entire inner surface of the barrel or just selected critical areas are precision scanned by means of a laser-guided surface measuring system.

Analytical software converts the laser readings into a 3D graph showing the measurements relevant to the actual state of wear.

With its optical analysis and precision measurement capabilities, the Cobra LG system provides the basis for a detailed risk evaluation, allowing the preventive recognition of faults and possible malfunctions.

This enables repairs to be planned in advance, with the main benefit being a reduction in repair costs together with an increase in available machine capacity, according to the company.

Coperion Werner and Pfleiderer

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