开坯机为两辊水平轧机，坯料送至轧机前后，根据轧制程序表进入相应的轧槽可逆轧制，并通过翻钢装置将轧件夹紧进行翻转。一般轧制5-7道次(多9道次)。Thebloomingmachineisatworollhorizontalmill,andthebilletissenttothefrontandrearmills.Accordingtotherollingschedule,therollisrolledintothecorrespondingrollinggroove,andtheworkpieceisclampedandturnedthroughtheturningdevice.Thegeneralrollingis5-7times(upto9times).机架是轧钢机的主要部件，它在轧钢过程中承担金属变形给予的负荷。因此要求机架有足够的强度和刚度，以保证设备安全和产品质量。型钢轧机的机架形式较多，常见的机架形式有开口式机架、闭口式机架和半闭口式机架3种。Theframeisthemaincomponentoftherollingmill,whichbearstheloadgivenbythemetaldeformationduringtherollingprocess.Therefore,theframeisrequiredtoh***esufficientstrengthandstiffnesstoensurethesafetyoftheequipmentandthequalityoftheproduct.Therearemoreframeformsofthesteelmill.Thereare3kindsofcommonframeforms:openframe,closedframeandhalfclosedframe.实现金属轧制过程的设备。泛指完成轧材生产全过程的装备，包括有主要设备、辅助设备、起重运输设备和附属设备等。但一般所说的轧机往往仅指主要设备。Adeviceforametalrollingprocess.Generallyreferstotheequipmentthatcompletesthewholeprocessofrollingmaterialproduction,includingmainequipment,auxiliaryequipment,liftingandtransportationequipmentandauxiliaryequipment.Generallyspeaking,rollingmillsusuallyrefertoonlythemainequipments.使用热轧的第二个优点就在于其可以适当的改善金属以及合金材料的加工工艺性能。也就是说，其可以把较大的晶粒进行破碎，同时可以减少裂纹的出现，这样一来，也就相当于减少了铸造过程中的缺陷问题，提高合金的加工性能。Thesecondadvantageofhotrollingisthatitcanappropriatelyimprovetheprocessingperformanceofmetalandalloymaterials.Thatistosay,itcanbreakthelargergrainandreducetheappearanceofthecrack,whichisequivalenttoreducingthedefectsinthecastingprocessandimprovingtheprocessingperformanceofthealloy.)