Riva Group modernizes their four-strand wire rod mill

Again, Riva Group trusted DANIELI technologies for its long-product rolling mills in Europe. The latest and most recent intervention for Riva Group is the modernization of the four-strand wirerod mill at Riva BES – Brandenburger Elektrostahlwerke, Germany, through the supply and installation of four laying heads and pinch rolls, supplied at one time. The upgraded mill comprises four rolling lines to produce up to 270 tph of low-, medium- and high-carbon steel rounds with diameters between 5.5 and 16 mm, and rebar from 6 to 16 mm, into 1,575 kg coils. The new laying heads are DANIELI-patented high-tech oil film bearing units designed to reach speeds up to 140 m/s with superior operational stability, optimal coil shape, and minimal maintenance thanks to the vibration-free operation. The latest generation of DANIELI active pinch rolls equipped with Electro-Hydrostatic Actuators –EHA, also play a key role, providing the optimal gap / force setting over the entire rolling period, avoiding roll slippage and wear, which in turn results in increased ring lifetime. Maintenance-free operations are ensured by a closed-circuit adaptive system and trouble-free operations, thanks to a simple self-tuning procedure.

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