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SAIL innovation in Rourkela plant

- R&D unit rolls out cost-effective solution

Ranchi, July 21: A Ranchi-based R&D unit of Steel Authority of India has developed an energy saving lubrication system that will go a long way to help steel plants achieve their goal of producing cost-effective steel.

The roll bite lubrication system, developed by Research and Development Centre for Iron and Steel (RDCIS), was introduced at the hot strip mill of Rourkela Steel Plant (RSP) recently in the presence of, among others, S. Varadarajan, executive director of RDCIS and V. Shankar Narayanan, acting executive director of RSP.

S.K. Mohapatra, chief of communications of RDCIS, claimed the new technology would save about 10 per cent energy consumed by hot rolling mills.

A new rolling oil, developed jointly with Indian Oil Corporation Limited, was used for the purpose, he added.

Sprinkling water between the roller and the metal is the common practice that is followed during rolling of steel coils at plants. After the new system is introduced, a mixture of water and the newly developed rolling oil will also be used.

“Once mixed with water, the rolling oil (lubricant) forms an emulsion and when it is applied, it will considerably reduce friction during the rolling process,” explained P.Pathak, assistant general manager of RDCIS who was closely associated with the research project.

The lubricant will also have a positive effect on torque (a technical term denoting movement of a system of forces causing rotation) and will consume less energy than what the roll uses at present.

“Reduction in friction together with less rotational energy required by the rolling mill due to the positive effect on torque will result in saving 10 per cent of energy,” Pathak added.

He said now that the lubrication system had been successfully implemented at Rourkela, efforts were on to start using the system at Bokaro Steel Plant shortly.


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