轧辊由辊身、辊颈和轴头二部分组成。辊颈安装在轴承中，并通过袖承座和压下装置把轧制力传给机架。铂头和连接轴相连接，传递轧制扭矩。轴头有三种主要形式；梅花轴头、万向轴头、带键槽的或圆柱形轴头。Therollisoftwopartsoftherollerbody,theneckoftherollandtheshafthead.Therollneckisinstalledinthebearingandpassesthroughthesleevebearingseatandthepressdowndevicetotherack.Theplatinumheadisconnectedtotheconnectingshafttotransfertherollingtorque.Therearethreemainformsoftheshaft;theshaftofaplum,auniversalshaft,oracylindricalshaftwithakeyway.在粗轧机架后，中型型材轧机有两组连续的机架。连续轧机，根据孔型设计既可以水平布置，也可以立式布置。对于有平行缘的型钢和槽钢，还配有机架。Aftertheroughingmill,therearetwosetsofcontinuousrackinthemediumsectionmill.Thecontinuousrollingmillcanbearrangedhorizontallyorverticallyaccordingtothepassdesign.Forsteelandchannelsteelwithparalleledges,universalframeisalso***ailable.被轧制的钢种被轧制的钢种是选择轧辊的关键因素，其抗变形能力随坯料化学成分不同而改变，主要表现在轧制的各阶段变形的负荷大小和变化。必须根据确定的强度和硬度选择轧辊。RolledsteelTherolledsteelisthekeyfactortoselecttheroll.Itsdeformationresistancevarieswiththechemicalofthebillet.Itismainlymanifestedintheloadandchangeofdeformationineachrollingstage.Therollmustbeselectedaccordingtothedeterminedstrengthandhardness.)