【正文】 翻譯文獻(xiàn)； ～ 撰寫論文、提交論文； ～ 論文評閱和修改； 答辯。汽輪發(fā)電機(jī)是指用汽輪機(jī)驅(qū)動的發(fā)電的機(jī)器，是一種將機(jī)械能 轉(zhuǎn)化成電能的機(jī)器，這項工作由蒸汽投入機(jī)器中擴(kuò)張做功，讓葉片轉(zhuǎn)動從而推動產(chǎn)生電。而合適的汽輪發(fā)電機(jī)軸承座的鑄造工藝不僅能提高電機(jī)的性能，也能延長它的使用壽命。包括澆注系統(tǒng)、砂芯的設(shè)計、工藝參數(shù)的確定。 關(guān)鍵詞 :汽輪發(fā)電機(jī)軸承座 ； 鑄鋼 ； 鑄造工藝設(shè)計 江蘇科技大學(xué)本科畢業(yè)設(shè)計（論文） II Abstract The rapid development of the global economy in the boom, the modern increasingly high demand for steam turbine generator. Turbo refers to a turbine driven power generating apparatus, a mechanical energy into electrical energy machine. By the steam into the turbine expansion work, so that the blades rotate prompting generators. Turbogenerator generally stator, rotor and bearing ponents such as constitution, it is an important bearing casting process manufacturing turbine generator. The turbogenerator housings suitable casting process can not only improve the performance of the motor, but also to extend its service life. This paper pleted the determination of 100MW turbine generator bearing casting process design, including the selection of subsurface systems and pouring sand core design, process parameters. Design looks like, core boxes and sand box, revealing the produce loose shrink, shrinkage causes the site and thus the casting process optimization. Keywords: turbine generator bearing。casting process design 江蘇科技大學(xué)本科畢業(yè)設(shè)計（論文） III 目錄 第一章 緒論 ................................................................................................................. 1 本課題的研究背景 ............................................................................................... 1 本 課題研究發(fā)展現(xiàn)狀 ........................................................................................... 1 本課題的研究目的與意義 ................................................................................... 1 鑄造概述 ............................................................................................................... 1 鑄造的特點 ........................................................................................................... 2 鑄造方法的 分類 ................................................................................................... 2 鑄造工藝設(shè)計的原則 ........................................................................................... 3 確定澆注位置的一般原則 ................................................................................... 4 分型面的選擇原則 ............................................................................................... 4 鑄造 工藝設(shè)計的內(nèi)容和步驟 ............................................................................. 5 本課題研究的內(nèi)容 .................................................................................. 5 本課題設(shè)計的步驟 .................................................................................. 5 第二章 軸承座 工藝性 分析 ................................................................................... 7 汽輪發(fā)電機(jī)軸承座 ............................................................................................... 7 軸承座鑄造方法的選定 ....................................................................................... 7 軸承座鑄造材料 ................................................................................................... 7 軸承座工藝分析 ................................................................................................... 9 加工面選擇 ........................................................................................................... 9 第三章 工藝方案的確定 ...................................................................................... 10 澆注位置的選擇 ................................................................................................. 10 分型面選擇 ......................................................................................................... 10 砂箱尺寸確定 ......................................................................................................11 第四章 軸承座鑄造工藝參數(shù) ............................................................................ 12 鑄件的尺寸公差 ................................................................................................. 12 鑄件最小鑄出壁厚 ............................................................................................. 12 機(jī)械加工余量 ..................................................................................................... 13 鑄造收縮率 ......................................................................................................... 15 起模斜度 ............................................................................................................. 16 工藝補(bǔ)正量 ......................................................................................................... 17 反變形量 ............................................................................................................. 17 第五章 砂芯的設(shè)計 ................................................................................................ 18 砂芯的分類 ......................................................................................................... 18 砂芯的材料選擇 ................................................................................................. 18 砂芯的設(shè)計原則 ................................................................................................. 18 芯頭的設(shè)計 ......................................................................................................... 18 芯骨設(shè)計 ............................................................................................................. 20 江蘇科技大學(xué)本科畢業(yè)設(shè)計（論文） IV 砂芯的定位結(jié)構(gòu) ................................................................................................. 20 砂芯的排氣 ......................................................................................................... 20 第