Optimization of descaling nozzles in a hot strip mill

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In hot rolling, the surface quality of the finished strip depends on the performance of the descaling equipment in the roughing and finishing trains. The design of descaling systems and nozzles has been improved over the years step by step, thus increasing the kinetic energy of the spray water and enabling reproducible spray patterns. At Thyssen Krupp´s hot strip mill in Bochum the descalers have been modernized several times since 1992. Thus downgrading of hot strip due to scars could be reduced by more than 50%.

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