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Design and Introduction of a Superior Roll Cooling System for a Reversing Cold Mill

机译:可逆式冷轧机优质辊冷却系统的设计和介绍

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An important function of a roll cooling system in a cold reversing mill, besides providing necessary cooling and lubrication, is to control the roll thermal profile. At 4-Hi reversing mill of Silicon Steel Mill, Rourkela Steel Plant, roll cooling headers have been designed based on differential flow density along the work roll barrel, in accordance to the roll thermal profile. The headers have been divided into three zones, depending on the intensity of the cooling required with the central zone having the highest flow density followed by the intermediate and the end zones. Depending upon the coolan t requirement, the nozzle spacing for each individual zone was adjusted. A flushing arrangement was incorporated to take care of clogging of nozzles and ensure uninterrupted flow of the coolant. Six modified headers, with nozzles having desired flow characteristics and spray pattern, were installed in the mill. A new self-cleaning wedge wire drum type filtration unit, capable of uninterrupted supply of clean emulsion, was also introduced along with the modified headers.
机译:冷轧机中辊冷却系统的重要功能,除了提供必要的冷却和润滑外,还应控制辊的热分布。在Rourkela钢铁厂Silicon Steel Mill的4-Hi可逆轧机中,根据轧辊热分布,根据沿工作轧辊机筒的不同流量密度设计了轧辊冷却集管。联管箱根据所需的冷却强度分为三个区域,中央区域的流量密度最高,其次是中间区域和末端区域。根据冷却要求,调整每个单独区域的喷嘴间距。装有冲洗装置,以防止喷嘴堵塞并确保冷却液不间断地流动。在磨机中安装了六个改进的割台,这些割台带有具有所需流动特性和喷雾模式的喷嘴。还引入了一种新型的自清洁楔形钢丝鼓式过滤装置,该过滤装置能够不间断地提供清洁的乳化液,并带有改进的集管。

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