Siemens retrofit boosts efficiency at Corus

03 June 2008

Siemens has pinpointed a 30 per cent increase in throughput at Corus Construction and Industrial following the purchase of Flender gear units and Siemens drives. The equipment was installed, at Corus’ Clydebridge works in Scotland.

A total of nine Siemens drives, including five on heat treatment furnace roller tables, and four on a roller table and tempering furnace, were installed.

Corus manufacturing manager, Jim Cossar, said he had not previously used geared motors on this type of plant, but had been experiencing reliability problems with the existing hydraulic units in these areas, which was compromising production throughput. Speed matching was becoming an increasing problem for roller tables conveying steel from the furnaces. In contacting Industrial Automation and Controls (IAC), who had carried out previous work for Corus, he stressed that he was looking for better positional controls within the furnace and wanted German engineering with Siemens drives for reliability. IAC recommended the Siemens controls/Flender geared motors combination.

The Flender electric geared motors (size Z168), associated Siemens controls and Siemens 6SE70 AC drives/inverters were all subsequently fitted by IAC.

Cossar said that Corus at Clydebridge had trebled its output in the last two years, partially through making production efficiency improvements such as these.

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