年产30万吨线材车间工艺毕业设计

摘要根据设计任务要求，进行年产30万吨线材车间设计。设计参考众多国内外先进的线材生产厂，由任务书产量要求，选择高速线材生产方式。为保证高速下顺利轧制，全线为平立交替布置，轧件无扭运行，尽可能减少事故隐患。粗中轧机采用高刚度二辊短应力线轧机，预精轧机前两架短应力线轧机，后四架采用悬臂式轧机，这样可以安装高硬度耐磨碳化钨辊环，延长轧辊孔型寿命，保证最终产品精度。精轧机组采用6架方案，皆为超重V型悬臂成组传动轧机，生产线预精轧后采用了长段高强度水冷，保证精轧轧件温度较低。精轧后的穿水冷却，保证吐丝机吐丝温度。产品按照德国DIN标准A级生产（Φ5.5±0.1㎜）。关键词：线材；短应线轧机；平立交替；控制冷却ABSTRACTThistaskistodesignworkshopthatcanproduce30Kthardwire.Re-ferringtoanumberofdomesticandinternationaladvancedhardwirework-shopsandaccordingtothetaskrequirement,thehighspeedproducepatternischosen.Inordertosuccessfullyrollingharewireathighspeed,allmillontheproducelinesethorizon-talandverticallooper.Intherollingprocess,therollingpiecehasnotwist,thus,thehiddenaccidentcanbereduced.Roughandmiddlemillareheavy-rigidlytwo-rollershortstressthreadstands,astopre-finishingmillgroup,theformertwostandsareshortstressthread,thelaterfourstandsarecantilever,whichareabletoinstallhighhardnessandwearlessnessrollcollarmadefromWCsothatthelifeofrollerpasscanbelonger,therefor,theprecisionofproduc-tioncanbesatisfied.Thefinishingmillgroup内蒙古科技大学煤炭学院设计说明书IIadopt6stands,whichallareoverweightV-typenotwistcantilevermillandusedentiregroupdriving.Attheexitoffinishingmillgroup,thetwosizingdiameterstandsareequippedtoensurehigherrollingspeedandthestablesizepr-ecision.Keywords:hardwire;shortstessthread;horizontalandverticallooper,overweightV-type;controllcooling.目录目录摘要.............................................................................................................................IABSTRACT....................................................................................................................I引言.........................................................................................................................-1-第1章绪论.......................................................................................................-2-1.1线材的定义......................................................................................-3-1.1.2线材的用途...................................................................................-4-1.2我国线材生产概况..................................................................................-5-1.2.1技术上的差距...............................................................................-6-1.2.2管理上的差距...............................................................................-6-1.2.3市场分析.......................................................................................-6-第2章线材轧制生产工艺过程...........................................................................-7-2.1工艺过程制定依据.................................................................................-7-2.2线材生产工艺特点.................................................................................-7-2.2.1轧制速度进一步提高使轧机生产能力提高.............................-7-2.2.2采用连铸坯热送热装工艺.........................................................-8-2.2.3无头轧制.....................................................................................-8-2.2.4粗中轧机组采用全平/立布置实现全线无扭轧制...............-8-2.2.5预精轧机采用与无扭精轧机相同结构的“微型无扭轧机”.-8-2.2.6无扭精轧机组采用重型和超重型V型结构.............................-9-2.2.7采用低温轧制技术.....................................................................-9-2.2.8采用减定径机组进行精密轧制.................................................-9-2.2.9采用控制轧制和控制冷却.......................................................-11-2.2.10合金钢采用高速无扭轧制和控制冷却已趋成熟.................-11-2.3线材生产工艺过程概述.......................................................................-12-第3章厂址的选择与产品大纲的制定...............................................................-13-3.1厂址的选择...........................................................................................-13-内蒙古科技大学煤炭学院毕业设计说明书II3.2产品大纲制定原则...............................................................................-14-3.2.1国民经济发展对产品的要求...................................................-14-3.2.2产品的平衡...............................................................................-14-3.2.3建厂地区的条件、生产资源、自然条件、投资等的可能性-14-3.3产品具体内容.......................................................................................-14-第4章原料的选择与金属平衡表.....................................................................-16-4.1原料的选择...........................................................................................-16-4.1.1原料种类、断面形状、尺寸及单重的选择...........................-16-第5章主机列选择与布置.................................................................................-19-5.1主机列选择原则...................................................................................-19-5.2主机列选择...........................................................................................-19-5.2.1机架数目的确定.......................................................................-19-5.2.2粗轧机组的选择.......................................................................-20-5.2.3中轧机组的选择.......................................................................-20-5.2.4预精轧机组的选择...................................................................-21-5.2.5精轧机组及定减径机组的选择...............................................-21-第6章孔型设计................