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1、河北联合大学本科生毕业设计摘要根据设计任务要求，进行年产40万吨硬线车间设计。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。设计内容包括建厂经济依据、产品大纲分配、原料选择、出口速度选择、道次选择、轧机比较及选择、孔型系统设计、速度计算、温降计算、力能计算、轧辊校核、斯太尔摩风冷线等辅助设备选择等。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
2、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10架方案，皆为超重V型悬臂成组传动轧机，出口安装4架减定径机，保证轧制速度高并且尺寸精确稳定。生产线预精轧后采用了长段高强度水冷，保证进精轧轧件温度较低。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（Φ6.5±0.1㎜）。车间工艺与设备选择能够高精度生产Φ6.5硬线。关键词：硬线；短应线轧机；平立交替；超重V型无扭轧机；控制冷却I河北联合大学本科生毕业设计ABSTRACTThistaskistod
3、esignworkshopthatcanproduce400Kthardwire.Re-ferringtoanumberofdomesticandinternationaladvancedhardwirework-shopsandaccordingtothetaskrequirement,thehighspeedproducepatternischosen.Inthispaper,thefollowingaspestsarereferred,suchastheeconomicaccordance
4、,thedistributionofoutput,thematerialchoose,rollingspeedatexitchoose,thenumberofpasses,themillcomparisionandchoose,passsystemdesign,rollingvelocitycomputing,thetemperatureandmechnicalcomputing,thestrengthenofrollertest,Stelmoraircoolingtableschoo-se,e
5、tc.Inordertosuccessfullyrollingharewireathighspeed,allmillontheproducelinesethorrizontalandverticallooper.Intherollingpro-cess,therollingpiecehasnotwist,thus,thehiddenaccidentcanbereduced.Roughandmiddlemillareheavy-rigidlytwo-rollershortstressthreads
6、tands,astopre-finishingmillgroup,theformertwostandsareshortstressthread,thelaterfourstandsarecantilever,whichareabletoinstallhighhardnessandwearlessnessrollcollarmadefromWCsothatthelifeofrollerpasscanbelonger,therefor,theprecisionofproduc-tioncanbesa
7、tisfied.Thefinishingmillgroupadopt10stands,whichallareoverweightV-typenotwistcantilevermillandusedentiregroupdriving.Attheexitoffinishingmillgroup,thetwosizingdiameterstandsareequippedtoensurehigherrollingspeedandthestablesizepr-ecision.Therollingtec
8、hnologyislaiddownandequipmentareselectedsothathighprecisionΦ6.5hardwirecanbeproduced.Keywords:hardwire;shortstessthread;horizontalandverticallooper,overweightV-type;notwistcantilevermill;controllcoollingiv河北联合大学本科生毕业设计目 录引言1第1章绪论21.1线材31.1.1线材的定义31.
