120万吨冷轧车间设计及板形控制技术的应用.doc

120万吨冷轧车间设计及板形控制技术的应用 摘要 关键词： ABSTRACT This thesis is the plant design of a cold-rolled steel strip plant with annual capacity of 1.2million tons. The typical product is 08AL steel, 0.7×1500 mm. The designed products included the cold rolled steel sheet, the cold-rolled wide flat steel coil, the cold-rolled ribbon steel coil so on. The main equipments of the design are the latest ones in cold-strip rolling, which included: shallow-tank hydrochloric acid pickling unit, the entire continuous annealing unit and the entire hydrogen hood-type furnace, skin-pass unit, slitting and shearing line and so on. The design made the products scheme and the metal balance, designed the rolling schedule for the typical product, and calculated the rolling force ,checked the rolling mills production capacity, calculated the technical and economic indexes. A layout drawing for the designed plant was accomplished. In the special topic of this thesis, there is also the technology of sheet shape control was applied in Anshan Iron and steel company. Key words: Cold-rolled strip steel; Process Design; sheet shape control；target curve. 摘 要 I ABSTRACT II 1 综述 1 1.1 冷轧带钢的概念 1 1.2 冷轧带钢的产品分类及优势 1 1.3 冷轧板带钢的轧制工艺特点 2 1.4 冷轧生产工艺流程 3 1.4.1 酸洗 3 1.4.2 轧制 5 1.4.3 精整 6 1.4.4 镀锌 6 1.4.5 矫直 6 1.4.6 板带钢轧制制度的确定 7 1.5 冷轧带钢技术的发展 7 1.6 几种冷轧薄板带钢轧机设备介绍 8 1.6.1 二辊轧机 8 1.6.2 四辊式冷轧机 9 1.6.3 MKW型轧机 9 1.6.4 二十辊冷轧机 10 1.6.5 特种结构的轧机 10 2 产品方案 13 2.1冷轧产品方案 13 2.2 金属平衡表 14 3 设备选择和参数的确定 15 3.1 工艺流程制定 15 3.2 冷轧板带钢各机组生产工艺流程 16 4 主要设备选择及参数的确定 17 4.1 设备组成 17 4.2 机组设备 17 4.2.1 酸洗—冷轧联合机组 17 4.2.2 罩式退火炉 20 4.2.3 单机架平整机 22 4.2.4 连续热镀锌机组 24 4.2.5 电镀锌机组 26 4.2.6 横切机组 27 4.2.7 纵剪机组 29 4.2.8 重卷机组 30 5 轧制制度的确定 30 5.1 典型产品的规格及原料选择 30 5.1.1 典型产品 30 5.1.2 典型产品的特征及用途 31 5.1.3 典型产品的原料选择 31 5.2 典型产品压下规程的制定 31 5.2.1 轧制速度的确定 32 5.2.2 张力计算 32 5.3 轧制力的计算 33 5.3.1 轧辊辊型、轧辊直径及摩擦系数选择 33 5.3.2 各道次轧制力计算 35 6 设备校核 39 6.1 轧辊校核 39 6.1.1 轧辊咬入能力校核 39 6.1.2 轧辊强度校核 39 6.1.3 轧辊参数的确定 40 6.1.4 轧辊转速的确定 41 6.2 轧辊强度校核 42 6.2.1 工作辊强度计算 42 6.2.2 支撑辊强度校核强度计算 45