【正文】 tandard during the production We use continuous rolling technology ， there is 18 mill in mon ,6 for roughing mill ,6 for medium mill ,6 for finishing mill . The largest end mill speed is about 16m/s .This paper also analyzed the contemporary rod production in China. A series of problems to be solved are put forward. The design bases on the design paper, which firstly states the development. The necessity and possibility of setting up a plant are also discussed. Then the design is set out in certain procedures, mainly including the making of prod uct outline, choosing mills, choosing pass system, designing of pass in typical products force and energy parameters calculating and checking, auxiliary equipment, choosing workshop arrangement. Keywords： bar； pass design； workshop design； technological process目錄 目錄 摘要 ............................................................................................................................................ II ABSTRACT ..............................................................................................................................III 一 緒論 ...................................................................................................................................... 1 國內(nèi)棒材生產(chǎn)研究現(xiàn)狀 .............................................................................................. 1 產(chǎn)能高 ............................................................................................................... 1 生產(chǎn)設(shè)備參差不齊 ........................................................................................... 1 管理水平逐年提高 ........................................................................................... 2 高質(zhì)量、高附加值的經(jīng)濟線材少 ................................................................... 2 國外棒材生產(chǎn)研究現(xiàn)狀 .............................................................................................. 2 棒材生產(chǎn)技術(shù)發(fā)展現(xiàn)狀 .............................................................................................. 3 無頭軋制技術(shù) ................................................................................................... 3 熱送熱裝和感應(yīng)加熱的應(yīng)用 ........................................................................... 3 低溫軋制 ........................................................................................................... 3 棒材的高精度軋制 ........................................................................................... 4 高速剪切技術(shù) ................................................................................................... 4 棒材生產(chǎn)的目的和意義 .............................................................................................. 4 二 產(chǎn)品大綱 .............................................................................................................................. 5 產(chǎn)品大綱的確定要求及內(nèi)容 ...................................................................................... 5 產(chǎn)品的標(biāo)準(zhǔn) ....................................................................................................... 5 產(chǎn)品大綱編制時應(yīng)注意的問題 ....................................................................... 5 產(chǎn)品方案的主要內(nèi)容 ....................................................................................... 5 產(chǎn)品質(zhì)量 ........................................................................................................... 6 產(chǎn)品大綱 ...................................................................................................................... 6 坯料選擇 ...................................................................................................................... 7 三 典型產(chǎn)品及其軋制工藝研究 .............................................................................................. 9 典型產(chǎn)品 ...................................................................................................................... 9 鋼中各元素的作用： .................................................................................................. 9 軋制工藝對鋼材組織、性能的影響 ........................................................................ 10 常規(guī)工藝軋制條件下 HRB335 的組織 .................................................................... 13 化學(xué)元素對 HRB335CCT 曲線的影響 .................................................................... 13 四 生產(chǎn)工藝流程 .................................................................................................................... 15 棒材軋制生產(chǎn)工藝的制定 ........................................................................................ 15 制定生產(chǎn)工藝的原則 ..................................................................................... 15 生產(chǎn)工藝流程圖 ............................................................................................. 15 生 產(chǎn)工藝的過程 ........................................................................................................ 17 坯料表面預(yù)處理 ............................................................................................. 17 坯料加熱 ......................................................................................................... 17 鋼材的軋制 ..................................................................................................... 18 鋼材的冷卻與精整 ......................................................................................... 19 五 軋機選擇與軋輥參數(shù) ........................................................................................................ 21 目錄 軋鋼機的選擇原則 .................................................................................................... 21 軋機型式對比選擇 .................................................................................................... 21 開式機架 ......................................................................................................... 21 閉式機架 ......................................................................................................... 21 半閉口機架 ..................................................................