120x120方坯连铸拉矫机毕业设计

重庆科技学院毕业设计（论文）题目120x120方坯连铸机拉矫机设计学院机械与动力工程学院专业班级学生姓名学号指导教师职称讲师评阅教师职称2015年6月14日重庆科技学院毕业设计摘要I摘要连铸即为连续铸钢的简称。在钢铁厂生产各类钢铁产品过程中，使用钢水凝固成型有两种方法：传统的模铸法和连续铸钢法。而在二十世纪五十年代在欧美国家出现的连铸技术是一项把钢水直接浇注成形的先进技术，连铸技术具有大幅提高金属收得率和铸坯质量，节约能源等显著优势。本文主要介绍了方坯连铸机的优越性以及发展状况，并对方坯连铸拉矫设备的种类进行了描述。本文主要的研究对象是方坯连铸机拉矫机，如果要确定其工艺参数，必须要先确定方坯连铸机在工作过程中的相关工艺参数，因此本文首先研究了方坯连铸机的相关工艺参数。在确定了方坯连铸机的相关参数后，为接下来研究拉矫设备提供了许多理论依据。对于方坯连铸拉矫设备的研究主要是根据连铸设备中的各部分所受的力以及拉矫机在工作过程中的力能参数，对其进行结构设计，对主要的零部件进行受力分析和强度计算校核，并针对原设备制造、维护方面的薄弱环节加以改进。关键词：连续铸造拉矫机强度计算校核重庆科技学院毕业设计ABSTRACTIIABSTRACTContinuouscastingmachine.Afterdeterminingtherelativeparametersofbilletcontinuouscastingmachine,itprovidesalotoftheoreticalbasisforthestudyofthetensionlevelingequipment..castingmethodandcontinuouscastingmethod..Continuouscastingtechnologyofappearedinthefiftiesofthe20thcenturyinEuropeandtheUnitedStatesisadirectlypouringmoltensteelformingofadvancedtechnology,continuouscastingtechnologyhasasubstantialincreaseinthemetalyieldandqualityofcastingbillet,energyconservation,asignificantadvantage.Thispapermainlyintroducestheadvantagesanddevelopmentofthebilletcontinuouscastingmachine,anddescribesthetypeofthebilletcontinuouscastingequipment..Inthispaper,themainresearchobjectissquarebilletcontinuouscastingmachinestraighteningmachine,ifyouwanttodeterminetheprocessparametersmustbetodeterminethebilletcontinuouscastingmachineinworkingprocessparameters.Therefore,thispaperstudiestherelevanttechnologicalparametersofbilletcontinuouscastingmachine.Afterdeterminingtherelativeparametersofbilletcontinuouscastingmachine,itprovidesalotoftheoreticalbasisforthestudyofthetensionlevelingequipment.Forbilletcontinuouscastingstraighteningequipmentresearchismainlyaccordingtothepartsofcontinuouscastingequipmentbyforceandstraighteningmachineinworkingprocessofforceenergyparameters,thestructuredesignandofthemainpartsforforceanalysisandstrengthcalculation,andtheoriginalequipmentmanufacture,maintenanceofweaklinkstobeimproved.Keywords:Continuouscasting;Tensionlevelingmachine;Intensitycalculation;Check重庆科技学院目录目录摘要...................................................................IABSTRACT..........................................................................................................................1第1章绪论...........................................................11.1连续铸钢的优越性...............................................11.2国外连铸的发展情况.............................................11.3我国方坯连铸的发展情况.........................................21.4方坯连铸机生产工艺与主要设备描述...............................3第2章方案的确定.....................................................32.1方案一：刚性引锭杆用拉矫机.....................................42.1.1二辊分别传动自矫直式拉矫机................................42.1.2集中传动的三辊拉轿机......................................42.2方案二：挠性引锭杆用拉矫机.....................................52.2.1上辊传动组合式拉矫机......................................52.2.2整体机架上辊传动五辊式拉矫机..............................62.2.3整体机架下辊传动五辊式拉矫机..............................72.3确定方案.......................................................8第3章方坯连铸机主要工艺参数的确定...................................93.1弧形连铸机弧形半径的计算.......................................93.2拉速的确定....................................................103.3冶金长度的计算.................................................103.4钢包允许的最大浇注时间.........................................113.5连铸机流数的确定..............................................113.6连铸机的年生产能力计算........................................11第4章拉矫机相关参数的计算..........................................134.1方坯连铸机的拉坯阻力..........................................134.1.1铸坯在结晶器内的摩擦阻力.................................134.1.2铸坯通过二冷区的阻力.....................................134.1.3计算推动铸坯使之完成矫直功的力............错误!未定义书签。4.1.4拉矫机各运动部件的摩擦阻力...............................154.2装引锭杆时拉矫机的阻力及功率..................................174.3电动机类型的选择..............................................17第5章二级减速器设计................................................185.1分配传动比.....................................................195.2一级行星减速器的设计计算......................................195.3二级减速器蜗轮蜗杆减速器的设计计算............................245.3.1选择蜗杆类型确定中心距...................................245.3.2基本参数的选择...........................................255.3.3几何尺寸计算.............................................255.4减速器的维护与润滑.............................................295.4.1减速器的维护.............................................29重庆科技学院目录5.4.2减速器的润滑.............................................29第6章驱动辊的设计校核..............................................296.1求出轴上的功率P转速n和转矩T.................................306.2按弯扭合成强度条件计算........................................316.2.1轴上受力分析.............................................316.2.2求出各支承处的水平支反力NHF和垂直反力NVF................326.2.3作弯矩和扭矩图...........................................346.2.4按弯扭合成应力校核轴的强度...............................35第7章轴承的校核....................................................36第8章原设备制造、维护方面的薄弱环节及改进措施..................37总结38致谢..................................................................39参考文献.....................................