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SMS Demag to Upgrade Tata Steel Strip Mill

08/06/2007 - Tata Iron & Steel awards SMS Demag a contract for the modernization of its hot strip mill in Jamshedpur that will allow production to increase from 3.1 million to 3.5 million tonnes per year.

Tata Iron & Steel Co. Ltd., India, has awarded SMS Demag a contract for the modernization of its hot strip mill in Jamshedpur.
 
For the roughing mill, the contract includes replacement of the drive trains, installation of new hydraulic adjusting systems, as well as a new Level 1 automation system with gage and width control. For the finishing mill, SMS Demag will supply new drive trains for mill stands F1 to F5.
 
The original compact hot strip mill, designed and built by SMS Demag, went in operation in 1993, producing around 3.1 million tonnes of hot strip per year. After the revamp, production could reach more than 3.5 million tonnes/year, thanks to newly increased drive power in the roughing stand and finishing mill.
 
SMS Demag will increases the power level in the roughing stand by 25%, which allows the number of passes to be reduced and makes the design of pass schedules easier. To be able to transmit the higher torques, new drive spindles, larger work rolls, and Morgoil® bearings with higher load-bearing capacity as well as modified roll chocks will be installed.
 
In the finishing mill, SMS Demag will increase the power of the motors by around 10%. SMS Demag will replace the main gear units of F1 to F4, and the pinion gear units of F1 to F5 or their gearwheel sets. On F1 and F2, new design-optimized Sieflex® gear spindles will be installed to make maintenance easier.
 
To minimize production stoppages, SMS Demag and Tata Steel worked together to develop a detailed concept for the revamp. The roughing-stand area will be modernized in the autumn of 2008 as part of an 18-day shutdown, and work in the finishing mill has been scheduled for the summer of 2009 during the regular short-time and continuous shutdown periods.
 
SMS group is, under the holding SMS GmbH, a group of companies internationally active in plant construction and mechanical engineering for the steel and nonferrous metals industry. It consists of the two Business Areas SMS Demag and SMS Meer, which jointly form SMS metallurgy. In 2006, some 9000 employees worldwide generated a turnover of about EUR 2.8 billion.