【正文】 s for typical product of Q345A, mm? 1400 mm. The maojor facilities include: three walking beam furnaces, one descaling machine for rough rolling, one 4roll reversing blooming mill (5000 tons), one 6stand and 6roll finishing mill group (3 Continuously Variable Crown rolling mills and 3 Pair Cross rolling mills), three coilers, and appurtenances. Considering market prospect, the yield, product scheme, and metal balance of each kind of product are appropriately designed based on the annual plant capacity. For the typical product, the process flow diagram, depressing systerm, velocity system, temperature system, and crown systerm, etc. are determined. Furthermore, the production capacity of the rolling mill is checked, the economic and technical norms are cauculated, and a plane figure for this workshop is drafted. In the chapter of special topic, The species， industrial arts and use of aluminum and its alloy are discussed in detail. Key words: hot rolled steel strip, depressing schedulel, aluminum and its alloy, species and use 年產(chǎn) 490 萬噸熱軋板帶鋼車間設計 遼寧科技大學本科生畢業(yè)設計（論文） 第 III頁 目 錄 摘 要 ................................................................................................. I Abstract ................................................................................................... II 1 綜述 ...................................................................................................... 1 熱軋板帶的發(fā)展史 ............................................ 1 熱軋及熱軋的 現(xiàn)狀 ............................................ 1 熱軋定義 .............................................. 1 熱軋工藝優(yōu)點 .......................................... 2 熱軋工藝不足之處 ...................................... 2 熱軋板帶的分類 ........................................ 2 熱軋板帶鋼的規(guī)格 ...................................... 3 熱軋板帶鋼生產(chǎn)的大 體工藝流程 .......................... 4 新型軋機簡介 .......................................... 5 國內(nèi)熱軋板帶的生產(chǎn)現(xiàn)狀 ................................ 6 熱軋及熱軋板帶生產(chǎn)未來發(fā)展方向 .............................. 7 本設計的目的和意義 ......................................... 8 2 產(chǎn)品方案和金屬平衡 ................................... 9 產(chǎn)品方案的編制 ............................................. 9 產(chǎn)品方案簡介 .......................................... 9 編制產(chǎn)品方案的原則及方法 .............................. 9 選擇計算產(chǎn)品 .......................................... 9 產(chǎn)品特點 ................................................... 10 熱軋產(chǎn)品品種及產(chǎn)品鋼號標準 ........................... 10 產(chǎn)品質(zhì)量標準 ..........................................11 產(chǎn)品性能 ............................................. 12 確定產(chǎn)品方案 ............................................... 13 編制金屬平衡表 ............................................. 14 3 主要設備及參數(shù) 的確定 ................................. 16 加熱爐 .................................................... 16 加熱爐的主要結(jié)構(gòu)及特點 ............................... 16 加熱爐的主要尺寸 ..................................... 16 加熱溫度、時間及產(chǎn)量 ................................. 17 設備規(guī)格 ............................................. 17 粗軋主要設備 .............................................. 17 年產(chǎn) 490 萬噸熱軋板帶鋼車間設計 遼寧科技大學本科生畢業(yè)設計（論文） 第 IV頁 粗軋除鱗裝置 ......................................... 18 粗軋機 ............................................... 18 精軋主要設備 .............................................. 19 帶坯邊部加熱器 ....................................... 20 切頭飛剪 ............................................. 20 精軋除鱗裝置 ......................................... 21 精軋立輥軋機 F1E ..................................... 21 精軋機組軋機 ......................................... 22 保溫裝置的選擇 ............................................. 25 層流冷卻 ................................................... 25 卷取設備 ................................................... 26 生產(chǎn)方案的選擇 ............................................. 29 4 軋制工藝及軋制制度的確定 ............................. 30 生產(chǎn)工藝流程 .............................................. 30 生產(chǎn)工藝簡介 ......................................... 30 生產(chǎn)工藝流程概述 ..................................... 30 加熱制度 .................................................. 31 加熱的目的 ........................................... 31 加熱的要求 ........................................... 32 加熱溫度的確定 ....................................... 32 加熱時間的確定 ....................................... 33 加熱速度的確定 ....................................... 33 壓下規(guī)程制定 ............................................. 33 根據(jù)產(chǎn)品選擇原料 ..................................... 34 粗軋機組壓下制度的制定 ............................... 34 精軋機組壓下制度的確定 ............................... 37 咬入條件校核 ......................................... 38 軋制時間制度 .............................................. 38 粗軋機軋制時間制度 ................................... 38 精軋機軋制時間制度 ................................... 40 軋機工作圖表 ......................................... 43 溫度制度 .................................................. 44 粗軋溫度制度 ......................................... 45 精軋溫度制度 ......................................... 46 卷取溫度制度 ......................................... 47 速度制度 .................................................. 47 粗軋機速度制度 ....................................... 47 精軋機速度制度 ....................................... 48 粗軋各道次的平均變形速度 ............................. 50 精軋各道次的平均變形速度 ............................. 51 輥型制度 .................................................. 52 5 生產(chǎn)設備校核 ......................................... 55 年產(chǎn) 490 萬噸熱軋板帶鋼車間設計 遼寧科技大學本科生畢業(yè)設計（論文） 第 V頁 軋制力與軋制力矩 .......................................... 55 軋制力的計算 ......................................... 55 軋制力矩的計算 ....................................... 56 粗軋與精軋的軋制力和軋制力矩 ......................... 56 設備能力參數(shù)校核 ........................................... 57 軋制力能參數(shù) ........................................