Danieli H3 technology for quality wirerod production
MMK selected Danieli to modernize its wirerod mill "170", which was supplied by Danieli in 2003.
The aim of the modernization is to introduce the Danieli H3 (High-productivity, High-quality and High-efficiency) technology to improve mechanical properties of finished products, especially the high-carbon steel (0.45%-0.85% C) for dia 5.5-16 mm produced at up to 100 m/s.
The existing Danieli Centro Combustion furnace will be revamped in order to separate the heating and soaking zones, reducing the material decarburization.
LLH+ type oil-film bearing laying heads with double pipe rotors will be installed to provide stable and vibration-free operation at high speeds and to maintain in-balance conditions.
The cooling area also will be upgraded to ensure adequate and uniform cooling of wire loops and desired mechanical properties.
Newly designed water boxes and water control valves after the wirerod block will optimize water cooling and guarantee a stable rolling process.
Electrics and automation carried out by Danieli Automation also will be part of the plant modernization, which will be completed in 2018.
The Magnitogorsk Metallurgical Plant, MMK, operates three Danieli rolling mills with a total design capacity 2.2 Mtpy.
In addition to wirerod mill “170”, MMK is running bar mill "370", supplied in 2005, and section mill "450", supplied in 2006.
source: Danieli
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